Chapter 1: Introducing Philosophy
Nathan Smith
Chapter Outline
For most college students, an Introduction to Philosophy course is their first encounter with the study of philosophy. Unlike most of your other courses, philosophy is not something usually covered in high school. Yet you are probably familiar with the term philosophy and may have some preconceived notion about what philosophy is and what philosophers do. Perhaps you have stayed up late at night talking with friends or family about topics like free will or the existence of God. Maybe you have a friend who always talks about big ideas or asks tough questions that sound like riddles. Perhaps you think of them as “philosophical”; you might be right.
In this chapter, we will provide a brief introduction to the field of philosophy as a historical and academic discipline. This first chapter should prepare you for your philosophy course and give you a better idea of what it means to be a philosopher. As with all introductions, this one is just a start. Your job is to explore more, think more, read more, and write more like a philosopher. Soon you may even find that you are doing philosophy.
1.1 What is Philosophy?
Learning Objectives
By the end of this section, you will be able to:
- Identify sages (early philosophers) across historical traditions.
- Explain the connection between ancient philosophy and the origin of the sciences.
- Describe philosophy as a discipline that makes coherent sense of a whole.
- Summarize the broad and diverse origins of philosophy.
It is difficult to define philosophy. In fact, to do so is itself a philosophical activity, since philosophers are attempting to gain the broadest and most fundamental conception of the world as it exists. The world includes nature, consciousness, morality, beauty, and social organizations. So the content available for philosophy is both broad and deep. Because of its very nature, philosophy considers a range of subjects, and philosophers cannot automatically rule anything out. Whereas other disciplines allow for basic assumptions, philosophers cannot be bound by such assumptions. This open-endedness makes philosophy a somewhat awkward and confusing subject for students. There are no easy answers to the questions of what philosophy studies or how one does philosophy. Nevertheless, in this chapter, we can make some progress on these questions by (1) looking at past examples of philosophers, (2) considering one compelling definition of philosophy, and (3) looking at the way academic philosophers today actually practice philosophy.
Historical Origins of Philosophy
One way to begin to understand philosophy is to look at its history. The historical origins of philosophical thinking and exploration vary around the globe. The word philosophy derives from ancient Greek, in which the philosopher is a lover or pursuer (philia) of wisdom (sophia). But the earliest Greek philosophers were not known as philosophers; they were simply known as sages. The sage tradition provides an early glimpse of philosophical thought in action. Sages are sometimes associated with mathematical and scientific discoveries and at other times with their political impact. What unites these figures is that they demonstrate a willingness to be skeptical of traditions, a curiosity about the natural world and our place in it, and a commitment to applying reason to understand nature, human nature, and society better. The overview of the sage tradition that follows will give you a taste of philosophy’s broad ambitions as well as its focus on complex relations between different areas of human knowledge.
The Sages of India, China, Africa, and Greece
In classical Indian philosophy and religion, sages play a central role in both religious mythology and in the practice of passing down teaching and instruction through generations. The Seven Sages, or Saptarishi (seven rishis in the Sanskrit language), play an important role in sanatana dharma, the eternal duties that have come to be identified with Hinduism but that predate the establishment of the religion. The Seven Sages are partially considered wise men and are said to be the authors of the ancient Indian texts known as the Vedas. But they are partly mythic figures as well, who are said to have descended from the gods and whose reincarnation marks the passing of each age of Manu (age of man or epoch of humanity). The rishis tended to live monastic lives, and together they are thought of as the spiritual and practical forerunners of Indian gurus or teachers, even up to today. They derive their wisdom, in part, from spiritual forces, but also from tapas, or the meditative, ascetic, and spiritual practices they perform to gain control over their bodies and minds. The stories of the rishis are part of the teachings that constitute spiritual and philosophical practice in contemporary Hinduism.
Figure 1.2 depicts a scene from the Matsya Purana, where Manu, the first man whose succession marks the prehistorical ages of Earth, sits with the Seven Sages in a boat to protect them from a mythic flood that is said to have submerged the world. The king of serpents guides the boat, which is said to have also contained seeds, plants, and animals saved by Manu from the flood.
In similar fashion to the Indian tradition, the sage (sheng) tradition is important for Chinese philosophy. Confucius, one of the greatest Chinese writers, often refers to ancient sages, emphasizing their importance for their discovery of technical skills essential to human civilization, for their role as rulers and wise leaders, and for their wisdom. This emphasis is in alignment with the Confucian appeal to a well-ordered state under the guidance of a “philosopher-king.” This point of view can be seen in early sage figures identified by one of the greatest classical authors in the Chinese tradition, as the “Nest Builder” and “Fire Maker” or, in another case, the “Flood Controller.” These names identify wise individuals with early technological discoveries. The Book of Changes, a classical Chinese text, identifies the Five (mythic) Emperors as sages, including Yao and Shun, who are said to have built canoes and oars, attached carts to oxen, built double gates for defense, and fashioned bows and arrows (Cheng 1983). Emperor Shun is also said to have ruled during the time of a great flood, when all of China was submerged. Yü is credited with having saved civilization by building canals and dams.
These figures are praised not only for their political wisdom and long rule, but also for their filial piety and devotion to work. For instance, Mencius, a Confucian philosopher, relates a story of Shun’s care for his blind father and wicked stepmother, while Yü is praised for his selfless devotion to work. In these ways, the Chinese philosophical traditions, such as Confucianism and Mohism, associate key values of their philosophical enterprises with the great sages of their history. Whether the sages were, in fact, actual people or, as many scholars have concluded, mythical forebearers, they possessed the essential human virtue of listening and responding to divine voices. This attribute can be inferred from the Chinese script for sheng, which bears the symbol of an ear as a prominent feature. So the sage is one who listens to insight from the heavens and then is capable of sharing that wisdom or acting upon it to the benefit of his society (Cheng 1983). This idea is similar to one found in the Indian tradition, where the most important texts, the Vedas, are known as shruti, or works that were heard through divine revelation and only later written down.
A detailed and important study of the sage tradition in Africa is provided by Henry Odera Oruka (1990), who makes the case that prominent folk sages in African tribal history developed complex philosophical ideas. Oruka interviewed tribal Africans identified by their communities as sages, and he recorded their sayings and ideas, confining himself to those sayings that demonstrated “a rational method of inquiry into the real nature of things” (Oruka 1990, 150). He recognized a tension in what made these sages philosophically interesting: they articulated the received wisdom of their tradition and culture while at the same time maintaining a critical distance from that culture, seeking a rational justification for the beliefs held by the culture.
Among the ancient Greeks, it is common to identify seven sages. The best-known account is provided by Diogenes Laërtius, whose text Lives and Opinions of Eminent Philosophers is a canonical resource on early Greek philosophy. The first and most important sage is Thales of Miletus. Thales traveled to Egypt to study with the Egyptian priests, where he became one of the first Greeks to learn astronomy. He is known for bringing back to Greece knowledge of the calendar, dividing the year into 365 days, tracking the progress of the sun from solstice to solstice, and—somewhat dramatically—predicting a solar eclipse in 585 BCE. The eclipse occurred on the day of a battle between the Medes and Lydians. It is possible that Thales used knowledge of Babylonian astronomical records to guess the year and location of the eclipse. This mathematical and astronomical feat is one of Thales’s several claims to sagacity. In addition, he is said to have calculated the height of the pyramids using the basic geometry of similar triangles and measuring shadows at a certain time of day. He is also reported to have predicted a particularly good year for olives: he bought up all the olive presses and then made a fortune selling those presses to farmers wanting to turn their olives into oil. Together, these scientific and technical achievements suggest that at least part of Thales’s wisdom can be attributed to a very practical, scientific, and mathematical knowledge of the natural world. If that were all Thales was known for, he might be called the first scientist or engineer. But he also made more basic claims about the nature and composition of the universe; for instance, he claimed that all matter was fundamentally made of up water. He also argued that everything that moved on its own possessed a soul and that the soul itself was immortal. These claims demonstrate a concern about the fundamental nature of reality.
Another of the seven sages was Solon, a famed political leader. He introduced the “Law of Release” to Athens, which cancelled all personal debts and freed indentured servants, or “debt-slaves” who had been consigned to service based on a personal debt they were unable to repay. In addition, he established a constitutional government in Athens with a representative body, a procedure for taxation, and a series of economic reforms. He was widely admired as a political leader but voluntarily stepped down so that he would not become a tyrant. He was finally forced to flee Athens when he was unable to persuade the members of the Assembly (the ruling body) to resist the rising tyranny of one of his relatives, Pisistratus. When he arrived in exile, he was reportedly asked whom he considered to be happy, to which he replied, “One ought to count no man happy until he is dead.” Aristotle interpreted this statement to mean that happiness was not a momentary experience, but a quality reflective of someone’s entire life.
Beginnings of Natural Philosophy
The sage tradition is a largely prehistoric tradition that provides a narrative about how intellect, wisdom, piety, and virtue led to the innovations central to flourishing of ancient civilizations. Particularly in Greece, the sage tradition blends into a period of natural philosophy, where ancient scientists or philosophers try to explain nature using rational methods. Several of the early Greek schools of philosophy were centered on their respective views of nature. Followers of Thales, known as the Milesians, were particularly interested in the underlying causes of natural change. Why does water turn to ice? What happens when winter passes into spring? Why does it seem like the stars and planets orbit Earth in predictable patterns? From Aristotle we know that Thales thought there was a difference between material elements that participate in change and elements that contain their own source of motion. This early use of the term element did not have the same meaning as the scientific meaning of the word today in a field like chemistry. But Thales thought material elements bear some fundamental connection to water in that they have the capacity to move and alter their state. By contrast, other elements had their own internal source of motion, of which he cites the magnet and amber (which exhibits forces of static electricity when rubbed against other materials). He said that these elements have “soul.” This notion of soul, as a principle of internal motion, was influential across ancient and medieval natural philosophy. In fact, the English language words animal and animation are derived from the Latin word for soul (anima).
Similarly, early thinkers like Xenophanes began to formulate explanations for natural phenomena. For instance, he explained rainbows, the sun, the moon, and St. Elmo’s fire (luminous, electrical discharges) as apparitions of the clouds. This form of explanation, describing some apparent phenomenon as the result of an underlying mechanism, is paradigmatic of scientific explanation even today. Parmenides, the founder of the Eleatic school of philosophy, used logic to conclude that whatever fundamentally exists must be unchanging because if it ever did change, then at least some aspect of it would cease to exist. But that would imply that what exists could not exist—which seems to defy logic. Parmenides is not saying that there is no change, but that the changes we observe are a kind of illusion. Indeed, this point of view was highly influential, not only for Plato and Aristotle, but also for the early atomists, like Democritus, who held that all perceived qualities are merely human conventions. Underlying all these appearances, Democritus reasoned, are only atomic, unchanging bits of matter flowing through a void. While this ancient Greek view of atoms is quite different from the modern model of atoms, the very idea that every observable phenomenon has a basis in underlying pieces of matter in various configurations clearly connects modern science to the earliest Greek philosophers.
Along these lines, the Pythagoreans provide a very interesting example of a community of philosophers engaged in understanding the natural world and how best to live in it. You may be familiar with Pythagoras from his Pythagorean theorem, a key principle in geometry establishing a relationship between the sides of a right-angled triangle. Specifically, the square formed by the hypotenuse (the side opposite the right angle) is equal to the sum of the two squares formed by the remaining two sides. In the figure below, the area of the square formed by c is equal to the sum of the areas of the squares formed by a and b. The figure represents how Pythagoras would have conceptualized the theorem.
The Pythagoreans were excellent mathematicians, but they were more interested in how mathematics explained the natural world. In particular, Pythagoras recognized relationships between line segments and shapes, such as the Pythagorean theorem describes, but also between numbers and sounds, by virtue of harmonics and the intervals between notes. Similar regularities can be found in astronomy. As a result, Pythagoras reasoned that all of nature is generated according to mathematical regularities. This view led the Pythagoreans to believe that there was a unified, rational structure to the universe, that the planets and stars exhibit harmonic properties and may even produce music, that musical tones and harmonies could have healing powers, that the soul is immortal and continuously reincarnated, and that animals possess souls that ought to be respected and valued. As a result, the Pythagorean community was defined by serious scholarship as well as strict rules about diet, clothing, and behavior. The Pythagorean school is an example of how early philosophical and scientific thinking combines with religious, cultural, and ethical beliefs and practices to embrace many different aspects of life.
How It All Hangs Together
Closer to the present day, in 1962, Wilfrid Sellars, a highly influential 20th-century American philosopher, wrote a chapter called “Philosophy and the Scientific Image of Man” in Frontiers of Science and Philosophy. He opens the essay with a dramatic and concise description of philosophy: “The aim of philosophy, abstractly formulated, is to understand how things in the broadest possible sense of the term hang together in the broadest possible sense of the term.” If we spend some time trying to understand what Sellars means by this definition, we will be in a better position to understand the academic discipline of philosophy. First, Sellars emphasizes that philosophy’s goal is to understand a very wide range of topics—in fact, the widest possible range. That is to say, philosophers are committed to understanding everything insofar as it can be understood. This is important because it means that, on principle, philosophers cannot rule out any topic of study. However, for a philosopher not every topic of study deserves equal attention. Some things, like conspiracy theories or paranoid delusions, are not worth studying because they are not real. It may be worth understanding why some people are prone to paranoid delusions or conspiratorial thinking, but the content of these ideas is not worth investigating. Other things may be factually true, such as the daily change in number of the grains of sand on a particular stretch of beach, but they are not worth studying because knowing that information will not teach us about how things hang together. So a philosopher chooses to study things that are informative and interesting—things that provide a better understanding of the world and our place in it.
To make judgments about which areas are interesting or worthy of study, philosophers need to cultivate a special skill. Sellars describes this philosophical skill as a kind of know-how (a practical, engaged type of knowledge, similar to riding a bike or learning to swim). Philosophical know-how, Sellars says, has to do with knowing your way around the world of concepts and being able to understand and think about how concepts connect, link up, support, and rely upon one another—in short, how things hang together. Knowing one’s way around the world of concepts also involves knowing where to look to find interesting discoveries and which places to avoid, much like a good fisherman knows where to cast his line. Sellars acknowledges that other academics and scientists know their way around the concepts in their field of study much like philosophers do. The difference is that these other inquirers confine themselves to a specific field of study or a particular subject matter, while philosophers want to understand the whole. Sellars thinks that this philosophical skill is most clearly demonstrated when we try to understand the connection between the natural world as we experience it directly (the “manifest image”) and the natural world as science explains it (the “scientific image”). He suggests that we gain an understanding of the nature of philosophy by trying to reconcile these two pictures of the world that most people understand independently.
Unlike other subjects that have clearly defined subject matter boundaries and relatively clear methods of exploration and analysis, philosophy intentionally lacks clear boundaries or methods. For instance, your biology textbook will tell you that biology is the “science of life.” The boundaries of biology are fairly clear: it is an experimental science that studies living things and the associated material necessary for life. Similarly, biology has relatively well-defined methods. Biologists, like other experimental scientists, broadly follow something called the “scientific method.” This is a bit of a misnomer, unfortunately, because there is no single method that all the experimental sciences follow. Nevertheless, biologists have a range of methods and practices, including observation, experimentation, and theory comparison and analysis, that are fairly well established and well known among practitioners. Philosophy doesn’t have such easy prescriptions—and for good reason. Philosophers are interested in gaining the broadest possible understanding of things, whether that be nature, what is possible, morals, aesthetics, political organizations, or any other field or concept.
1.2 How Do Philosophers Arrive at Truth?
Learning Objectives
By the end of this section, you will be able to:
- Identify philosophical methods of inquiry.
- Explain the role of logical consequences in assessing a philosophical position.
- Define conceptual analysis, coherence, argument, intuition, and experimental philosophy.
- Explain the importance of trade-offs in establishing a philosophical position.
We have seen some examples of how philosophy emerged in antiquity, its relationship to natural philosophy and modern science, and one goal of philosophy, specifically—to provide a coherent story of how the world as it appears to us can be explained in a way that also makes sense of what the sciences tells us. In this section, we describe in greater detail the specific strategies and tools that philosophers use to arrive at truth.
Sources of Evidence
Even though philosophy is not an empirical science, philosophical claims require evidence, and philosophers ought to have reasons for the claims they make. There are many different types of philosophical evidence, some of which follow.
History
A basic but underappreciated source of evidence in philosophy is the history of philosophy. As we have already seen, philosophical thinking has its origins around the world, from the beginning of recorded history. Historical philosophers, sages, natural philosophers, and religious thinkers are often a source of insight, inspiration, and argument that can help us understand contemporary philosophical questions. For instance, the Greeks recognized early on that there is a difference between the way we use language to talk about things, with generic terms that apply to many different things at the same time (like cat, tree, or house), and the things as they actually exist—namely, as specific, individual beings or objects. Philosophers ask, what is the relationship between the general terms we use and the specific things that exist in the world? This sort of question is a perennial philosophical question. Today’s philosophers have their own response to this sort of question, and their answers often respond to and are informed by the historical treatment of these issues.
While you may expect questions about the natural world to change over time (and certainly they have changed due to scientific progress), questions of morality and social organization do not change as much. What constitutes the good life? How should communities be organized to benefit all the members of that community? These sorts of questions stay with us throughout time. In the United States, it is common for political leaders to appeal to the “founding fathers” of the US Constitution. People like Thomas Jefferson, Benjamin Franklin, and George Washington were heavily influenced by early modern European philosophers like John Locke, Jean-Jacques Rousseau, and Thomas Hobbes. In similar fashion, the current Chinese leader, Xi Jinping, is fond of reading and citing the foundational philosopher Confucius. Most of Xi’s addresses include quotations from Confucius, and Xi stresses the importance of reading classical Chinese philosophers (Zhang 2015). For Chinese political leaders, Confucius provides an important reminder of the role of virtue and a sense of belonging among the Chinese people. There is a widespread belief among the Chinese political class that their intellectual heritage is an important factor in their contemporary political success, in much the same way as American political leaders trace their success back to the founding fathers. Given the influence of philosophy on world history, it is worthwhile to engage with the writings of past philosophers to inform our understanding of pressing philosophical questions of today.
Intuition
One of the hallmarks of philosophical thinking is an appeal to intuition. What philosophers today mean by intuition can best be traced back to Plato, for whom intuition (nous) involved a kind of insight into the very nature of things. This notion has had religious connotations, as if the knowledge gained through intuition is like catching a glimpse of divine light. But intuition does not have to involve faith. René Descartes defined intuition in the following manner: “By intuition [I mean] . . . the conception of a clear and attentive mind, which is so easy and distinct that there can be no room for doubt about what we are understanding” (Descartes 1985, 14). This concept of intuition is clearest in mathematical examples. Importantly, it is quite different from the way that many people use the word intuitiontoday to mean something like “gut feeling” or “hunch.” When philosophers talk about intuition, they mean something much more definite. Consider the equation 2 + 2 = 4. Examine the equation in your mind. Could it possibly be false? So long as we operate under the assumption that these numbers represent counting numbers, it seems impossible that this equation could be false. More than that, there is a kind of clarity and certainty about the equation. It is not just that you have learned 2 + 2 = 4 by habit. You could easily perform the counting operation in your head and verify that the answer is correct. The truth of this mathematical sentence is so clear that if it turned out to be wrong, you would have to give up core beliefs about the nature of numbers, addition, and equality. This kind of clarity is a paradigm of intuition.
Intuition operates in other realms besides mathematics, such as in the use of language. For instance, it is obvious that a three-legged stool has three legs or that the tallest building is taller than any other building. These statements are true in an obvious way that is similar to the mathematical sentence above. We can branch out further, to say, for instance, that a camel is a mammal. We might intuitively know this statement is true, but we may also recognize that we are on slightly less certain ground. After all, whether a camel is a mammal is based on some understanding of the anatomy of a camel as well as the biological classification system that assigns animals to different classes. So the definition of camel as “a mammal” is not the same as “a three-legged stool has three legs.” Here, we can see that some statements are intuitively true by virtue of their definition. Others are intuitively true by virtue of some mental operation that we can perform very easily. Still others are intuitively true in that they rely on a body of knowledge that is commonly accepted and foundational for our understanding of the world.
There are many other places outside of pure linguistic analysis and mathematics where intuitions are helpful. Consider morality: the proposition that “it is better to be good than to be bad” may seem similar to the statement that “a three-legged stool has three legs,” but the former introduces the words good and bad, which are fraught terms that produce disagreement among people. Nonetheless, while it may be difficult to agree on what constitutes “good” or “bad,” everyone probably recognizes that whatever is good ought to be better than what is bad. That seems intuitively true. On this basis, we might imagine that there are intuitive truths even in morality. As we gain confidence in the ability of intuition to reveal truth, we might be tempted to extend intuitions even further. However, when intuitions extend into areas where there is no consensus on what is true, we have to be cautious. At that point, we might be using the term intuition to stand in for belief or perspective. Such “intuitions” do not have the same force as the intuition that 2 + 2 = 4. It is not always easy to distinguish between intuitions that are certain and evident and those that are mere feelings or hunches; recognizing that distinction is part of the practical know-how philosophers try to develop.
Common Sense
We ought not to neglect a third source of evidence in philosophy, namely, common sense. The idea of common sense is frequently used to describe a basic set of facts or common knowledge that any adult human being ought to possess. But common sense is rarely defined. When philosophers talk about common sense, they mean specific claims based on direct sense perception, which are true in a relatively fundamental sense. In other words, philosophical champions of common sense deny that one can be skeptical of certain basic claims of sense perception.
Famously, early-20th-century British philosopher G. E. Moore argued that a perfectly rigorous proof of the external world could be given by simply making the appropriate gesture toward his right hand and saying, “Here is one hand.” So long as it is granted that the sensory perception of a hand is evidence of the existence of a hand and that there is such a thing as a hand in the external world, then it must be granted that there is an external world. Such an argument trades on the idea that knowledge of the existence of one’s own hands is something that does not need further proof; it is something we can know without proof. This idea is not something that all philosophers accept, but it is, in many cases, an important source of evidence in philosophical inquiry. At a certain point, it may be necessary to stop demanding proofs for the things we can plainly see, such as the fact that this is a hand (as we hold a hand in front of our faces and examine it). Common sense may be questioned by further philosophical interrogation, but the common-sense philosopher may respond that such interrogation is either unnecessary, excessive, or misses the point.
Experimental Philosophy
Experimental philosophy is a relatively recent movement in philosophy by which philosophers engage in empirical methods of investigation, similar to those used by psychologists or cognitive scientists. The basic idea motivating experimental philosophy is that philosophers use terms and concepts that can be tested in a laboratory. For instance, when philosophers talk about free will, they frequently cite the idea that free will is necessary to assign moral responsibility; thus, moral responsibility is one reason to believe in the existence of free will. Consequently, you might wonder whether most people do, in fact, believe that the existence of free will is necessary to assign moral responsibility. This claim can be tested, for instance, by posing problems or scenarios to research subjects and asking them whether the absence of free choice removes moral responsibility. Similar strategies have been applied to causation, philosophy of biology, consciousness, personal identity, and so forth. In these areas, philosophers use experimental methods to find out what average people think about philosophical issues. Since common sense and intuition are already a source of evidence in philosophical reasoning, it makes sense to confirm that what philosophers ascribe to common sense or intuition aligns with what people generally think about these things.
Such experimental research is subject to many of the same issues that confront experimentation in the social sciences. These studies need to be replicable and ought to fall within a psychological or biological theory that helps explain them. When philosophers tread into experimental philosophy, they behave a lot more like scientists than philosophers, and they are held to the same rigorous standards as other researchers in similar experimental disciplines.
Results from Other Disciplines
The relevance of experimental methods for philosophy suggests a broader source of evidence for philosophical claims, namely, the results of scientific disciplines. When philosophers make claims about the natural world, they ought to be aware of what the natural sciences say. When philosophers make claims about human nature, they ought to be aware of what biology and the social sciences say. As we have already seen, there is an important difference between philosophical investigation and these various disciplines. Yet, given that philosophers attempt to gain some understanding of truth as a whole, they ought to welcome evidence from other disciplines that can help them better understand portions of that whole truth.
Table 1.1 summarizes these different types of philosophical evidence.
| Type of Evidence | Description | Example |
|---|---|---|
| History | The insights of historical philosophers, sages, natural philosophers, and religious thinkers can help us understand contemporary philosophical questions. | The question “What is a good life?” is a perennial philosophical concern; attempts at answers from the past continue to have relevance for contemporary people. |
| Intuition | The philosophical meaning of intuition can best be traced back to Plato, for whom intuition involved a kind of insight into the very nature of things. | The truth of a mathematical sentence like “2+2=4” is so clear that if it turned out to be wrong, you would have to give up core beliefs about the nature of numbers, addition, and equality. |
| Common sense | When philosophers talk about common sense, they mean specific claims based on direct sense perception. | Someone who is holding their hand in front of their face can rightly claim “this is my hand” without having to resort to any further proofs. |
| Experimental philosophy | The basic idea motivating experimental philosophy is that philosophers use terms and concepts that can be tested in a laboratory. | A philosopher might pose scenarios to research subjects and ask them whether they believe an absence of free choice would remove moral responsibility in these scenarios, in order to test a philosophical claim about moral responsibility and free will. |
| Results from other disciplines | Evidence from other disciplines can help philosophers better understand portions of philosophical inquiries. | Information provided by other social scientists (e.g., sociologists, historians, anthropologists) can be used to inform philosophical claims about human nature. |
Logic
One of the first and most reliable ways that philosophers have of verifying and analyzing claims is by using logic, which is, in some sense, the science of reasoning. Logic attempts to formalize the process that we use or ought to use when we provide reasons for some claims. By interpreting the claims we make using logic, we can assess whether those claims are well founded and consistent or whether they are poorly reasoned. Later chapters on logic and reasoning will provide much more detail about the nature of logic and how it is used by philosophers to arrive at truth.
Argument
The first and most important move in logic is to recognize that claims are the product of arguments. In particular, a claim is just the conclusion of a series of sentences, where the preceding sentences (called premises) provide evidence for the conclusion. In logic, an argument is just a way of formalizing reasons to support a claim, where the claim is the conclusion and the reasons given are the premises. In normal conversation and even philosophical writing, arguments are rarely written so clearly that one can easily identify the premises and the conclusion. Nevertheless, it is possible to reconstruct any argument as a series of sentences with clearly identified premises and conclusions. This process is the first step in analyzing an argument: identify the claim that is being made, then identify the sentences that provide supporting evidence for the argument. This process will necessarily require some interpretation on the part of the reader. Therefore, it is important to try to remain faithful to the original intention of the argument and outline the premises and conclusions in such a way that they display the reasoning of the person making that claim.
Once the premises and conclusion are identified and written in order, it is possible to use formal techniques to evaluate the argument. Formal techniques will be covered in a later chapter on logic and reasoning. For now, it is sufficient to note that there is a process for evaluating whether claims are well supported by using the techniques of logic. Poorly supported claims may be true, but without good reasons to accept those claims, a person’s support of them is irrational. In philosophy, we want to understand and evaluate the reasons for a claim. Just as a house that is built without a solid foundation will rapidly deteriorate and eventually fall, the philosopher who accepts claims without good reasons is likely to hold a system of beliefs that will crumble.
Explanation
While arguments can be thought of as building blocks to construct a solid foundation for beliefs about the world, arguments can also be understood as explanations for phenomena that are evident but not well understood. To generate well-founded beliefs, we start with evidence in the form of premises and infer a conclusion from that evidence. To explain observed phenomena, we start with a conclusion in the form of some observation and reason backward to the evidence that explains why the observation is true. For example, we infer that there is a fire based on the appearance of smoke, or we infer lightning when we hear thunder, even if we do not see the lightning. We can compare the way we reason about explanations to the way a detective might reconstruct a crime based on the evidence found at a crime scene. By reconstructing the premises that led to a given conclusion, a philosopher can explain the reasons for a conclusion that are evident through observation. In summary, logical reconstruction can be used to investigate the world around us, providing a rational explanation for why the world is the way it appears.
Coherence
Finally, logic provides philosophers with a powerful technique for assessing a set of claims or beliefs. We can ask whether a set of beliefs is logically consistent with one another. Given that we expect our beliefs to present to us a world that makes rational sense, we want those beliefs to be internally consistent. A set of beliefs or statements is coherent, or logically consistent, if it is possible for them to all be true at the same time. If it is not possible for statements or beliefs to be true at the same time, then they are contradictory. It seems unreasonable for a person to accept contradictory claims because a contradiction is a logical impossibility. If a person holds contradictory beliefs, then they must be wrong about at least some of their beliefs. Metaphorically, the house of beliefs in which they live must be poorly founded, at least in some places. When you are reading philosophy, you should be aware of places where the author says things that appear to be inconsistent. If you discover inconsistencies, that is a good indication that at least one of their claims is false. You may not know which claim is false, but you can know it is logically impossible for all claims to be true.
When faced with the possibility of incoherent beliefs, the philosopher will need to either revise those beliefs so that they become consistent, or they will need to give up some beliefs to preserve others. Logical consistency cannot tell us that a set of beliefs is true; a complete fiction might be logically consistent. But logical consistency can tell us what is not true. It is impossible for a logically inconsistent set of beliefs to be wholly true.
Conceptual Analysis
One of the techniques that philosophers use to clarify and understand philosophical statements (either premises or conclusions) is conceptual analysis. Conceptual analysis involves the analysis of concepts, notions, or ideas as they are presented in statements or sentences. The term analysis has been a part of philosophical terminology and methodology since its beginning. In its most basic sense, analysis refers to the process of breaking apart complex ideas into simpler ones. Analysis also involves a cluster of related strategies that philosophers use to discover truths. Each of these techniques attempts to arrive at a clearer and more workable definition of the concepts in question.
When students are asked to give a definition of some concept or term, they frequently go to a dictionary. But a dictionary provides only a description of how a concept is used in ordinary speech. A dictionary cannot tell us what the word means in a fundamental sense because dictionary definitions never ask whether that common usage is coherent, accurate, or precise. It is up to the person engaged in reflection on the concept to figure out what the term means and whether that meaning fits within a larger understanding of the world. The next section illustrates four methods of analysis.
Predicates
When philosophers today talk about concepts, they are usually referring to a notion that comes from the work on logic done by German philosopher Gottlob Frege. Frege demonstrated that any sentence in natural language could be translated into a formal, symbolic language, provided that we consider the sentence to be a kind of function that describes a relationship between names (or objects) and concepts. This symbolic language is what has become modern logic. Frege modeled his logic on mathematics, with the idea that he could eliminate the ambiguity and vagueness of natural language by translating it into a purely symbolic notation. Following Frege, we can break sentences into parts, including names, or object identifiers, and concepts, or predicates.
Predicates are descriptive terms, like “yellow,” “six feet tall,” or “faster than a speeding bullet.” Simple sentences like “the flower is yellow,” or “Superman is faster than a speeding bullet” can be easily analyzed into object terms and predicates. But any sentence can be analyzed in multiple ways. And some sentences express multiple relations between predicates and objects. So the role of conceptual analysis is to identify the right predicates for analysis and to clarify the relationship between them. Predicates can help us clarify statements. For any sentence, we can ask, what is being predicated, and how is it being predicated?
Descriptions
While the concepts that describe or categorize objects can be analyzed using predicates, the objects themselves can be analyzed by using descriptions. Bertrand Russell identified definite descriptions as the way to analyze proper names or objects. His idea is that in a sentence like “the flower is yellow” or “my dog likes naps,” the subject term—“flower” or “dog”—can be substituted with a descriptive sentence that uniquely identifies this particular flower or dog. There are unique characteristics that differentiate my dog from all others, for instance: my dog was born on a certain day, lives in a certain city, belongs to me, or occupies a specific location. Similarly, the flower can be identified by its position in a garden, field, or particular geographical location. One of Russell’s insights was that proper names, such as “Max” (suppose it is the name I use to call my dog), are definite descriptions in disguise. That is, any proper name can be substituted with a description that identifies the one and only thing named.
A definite description is a way of analyzing names and object terms for the purpose of making them more like predicates. This way we can clarify what we are talking about without resorting to gestures, context, or direct experience. You probably do this in your everyday life when you encounter confusion about a name. For instance, suppose a coworker says, “Kevin used up all the paper in the printer.” If there is more than one Kevin in the office, you might answer, “Which Kevin?” And your coworker may then respond, “The one with brown hair whose workspace is right next to the entrance.” “Oh,” you might reply, “You mean the one with the picture of his kids on his desk?” In a sense, this process of disambiguating the reference for the name “Kevin” is a process of seeking a more definite description to supplement the proper name. Understanding that language is composed of definite descriptions and predicates can help us remove some of the ambiguity and vagueness that is a natural part of speech.
Enumeration
Sometimes, to understand the meaning of a concept, it is helpful to enumerate its component parts. For instance, we may say that a governmental body is composed of its legislature, its executive, and its judicial branches. Or we might recognize that a cell is composed of a nucleus, a cell wall, and organelles. The process of enumeration can help us specify the nature of the thing we are talking about. In effect, we are identifying the parts that make up a whole. Since claims about the whole can be analyzed as claims about its parts and claims about how the parts pertain to the whole, it is helpful to enumerate the parts and consider how claims about the whole relate to claims about the parts.
Just as enumeration is helpful in understanding material things, it can be used to understand abstract concepts. For example, Aristotle says that wisdom is composed of scientific knowledge, plus understanding, where understanding is the grasp of first principles and scientific knowledge is the grasp of demonstrated reasoning that follows from first principles. Whether or not Aristotle is correct, his enumeration may help us understand the nature of wisdom.
Thought Experiments
When philosophers want to clarify the relationship between concepts, they often consider hypothetical scenarios meant to isolate one or more features of a concept and place it in the appropriate relationship with other concepts. Such hypothetical scenarios are called thought experiments. These imaginative scenarios allow us to test or compare concepts to better understand their connections and logical consequences. Philosophers have used thought experiments for as long as we have a written record of philosophical thought. For instance, Plato devised an elaborate thought experiment in The Republic, in which he depicts Socrates and several of his friends describing an ideal city. The premise of this thought experiment is that if the philosophers could describe an ideal city in detail, they would be able to identify which part of the city gives rise to justice.
Aristotle, a Greek philosopher who followed Plato, arrives at the famous claim that “nature abhors a vacuum” (i.e., nature would not allow empty space between matter) by constructing a thought experiment. To argue for this conclusion, Aristotle assumes that there is such a void and then asks, how could one know the distance between two points in a vacuum? If there is any distance between two points, Aristotle reasons, that distance would have to be the property of something. But, by hypothesis, there is nothing between the two points: it is a pure void. Aristotle bases his reasoning on the idea that it is impossible for properties to exist without something they are the property of. This argument reveals that Aristotle thinks distance is a property of matter. Accordingly, it is impossible to measure distance in a pure void. Therefore, Aristotle reasons, it is not possible for a void to exist because it would occupy a distance that has no measure. Puzzles like this one can prompt fruitful philosophical reflection. What do you think about it?
Thought experiments are also common in ethics as a way of testing out moral theories. A moral theory could be supported by a thought experiment if the result of applying the theory to a hypothetical case made good moral sense. On the other hand, the thought experiment might undermine the moral theory by demonstrating that when the theory is applied, it results in an absurd or immoral outcome. In any case, thought experiments can help us clarify the relationship between our concepts and theories.
Table 1.2 summarizes these four methods of conceptual analysis.
| Type of Conceptual Analysis | Description | Application |
|---|---|---|
| Predicates | Predicates are descriptive terms, like “yellow” or “six feet tall”. The role of conceptual analysis is to identify the right predicates for analysis and to clarify the relationship between them. | Predicates can help us clarify statements. For any sentence, we can ask, what is being predicated, and how is it being predicated? |
| Descriptions | A definite description is a way of analyzing names and object terms for the purpose of making them more like predicates. This way we can clarify what we are talking about without resorting to gestures, context, or direct experience. | Understanding that language is composed of definite descriptions and predicates can help us remove some of the ambiguity and vagueness that is a natural part of speech. |
| Enumeration | The process of enumeration can help us specify the nature of the thing we are talking about. In effect, we are identifying the parts that make up a whole. | Since claims about the whole can be analyzed as claims about its parts and claims about how the parts pertain to the whole, it is helpful to enumerate the parts and consider how claims about the whole relate to claims about the parts. |
| Thought experiments | Thought experiments are hypothetical scenarios meant to isolate one or more features of a concept and place it in the appropriate relationship with other concepts. | Thought experiments allow us to test or compare concepts to better understand their connections and logical consequences. |
Trade-offs
Conceptual analysis, logic, and sources of evidence together help philosophers compose a picture of the world that helps them get a better grasp of truth. Recall that philosophers are attempting to understand how things hang together in the broadest possible sense. However, it is unlikely that any single philosophical picture of the world will turn out to be so obviously compelling that it completely satisfies all criteria of logic, evidence, and conceptual analysis. It is much more likely that there will be competing pictures, each with strong reasons for believing in it. This situation is the basis for philosophical discussions. No one picture is so obviously true that all others can be discarded. Instead, we have to evaluate each picture of the world and understand the trade-offs that these pictures impose on us. We have to consider the practical and logical implications of the beliefs we hold to fully understand whether those beliefs are true and right.
“Biting the Bullet”
Sometimes when weighing the trade-offs of a particular view and its logical consequences, you may decide to “bite the bullet.” This means that you are willing to accept the negative consequences of the view because you find the view attractive for other reasons. For instance, on the topic of free will, a philosopher might be committed to the idea that past events fully determine the future. In such a case, the philosopher is willing to accept the negative implication that free will is an illusion. In ethics, some philosophers are committed to the view that morality is entirely determined by the total quantity of effects caused by an action. Such philosophers may be willing to accept things that would otherwise seem immoral, like harming an individual person, if that action results in a greater quantity of positive effects in the end. No view is going to be perfect, and it is difficult to make sense of the world in terms that we can explain and understand. Nonetheless, we must be honest about the logical and moral consequences of the views we hold. If you are ultimately willing to accept those consequences to maintain the view, then you can bite the bullet.
Reflective Equilibrium
Another method for assessing the logical and moral consequences of our thinking is to use judgments about particular cases to revise principles, rules, or theories about general cases. This process of going back and forth between an assessment of the coherence of the theory and judgments about practical, applied cases is called reflective equilibrium. This process requires the revision of a theoretical and principled stance based on practical judgments about particular cases. Reflective equilibrium is achieved when you are able to establish some coherence between your theoretical and practical beliefs. Reflective equilibrium is a kind of coherence method: that is, reflective equilibrium justifies beliefs by assessing their logical consistency. As opposed to a traditional coherence approach, however, reflective equilibrium encourages the use of practical and applied judgments about cases as part of the set of beliefs that is logically consistent. Reflective equilibrium is an important method for introductory students to understand because students are frequently tempted to think they need to solve theoretical issues first before they can consider applications. Or they may choose a theory and then try to apply it to cases. Reflective equilibrium emphasizes that this procedure is likely neither possible nor desirable. Instead, a philosopher should be aware of both the theoretical commitments and the practical concerns of their position and use their understanding of each to inform the final analysis of their beliefs.
1.3 An Overview of Contemporary Philosophy
Learning Objectives
By the end of this section, you will be able to:
- Identify the role of professional philosophers in academics and beyond.
Contemporary academic philosophy bears minimal resemblance to the classical traditions we have discussed in the previous sections. Philosophers today, like other academics, focus on specific areas of research expertise with the goal of producing new research that advances our philosophical understanding of specific problems or topic areas. That said, philosophical investigation is still motivated by the same desire to make sense of things in the most general way possible. In this section, we will introduce you to what philosophy majors do.
What Can You Do with a Philosophy Major?
Majoring in philosophy is a great way to complete a liberal arts degree. Philosophy will introduce you to fascinating ideas and teach you to think analytically and creatively. If you enjoy the topics in this book, you should consider a philosophy major.
Becoming a Philosophy Teacher
To pursue a career in academic philosophy, you must major in philosophy as an undergraduate and continue your studies in the field by doing some graduate work. Community colleges and some four-year schools employ instructors with a master’s degree in philosophy. However, it is very common for these jobs to be occupied almost entirely by people with PhDs. Academic jobs, particularly in the humanities and liberal arts, are extremely competitive. Even with a PhD, it will be difficult to find a job in an academic department. That said, it is much more common to find jobs teaching than doing research, but many teaching jobs still require some research. A philosophy professor or instructor may be asked to teach on a wide variety of subjects, depending on the needs of the school. By contrast, when doing research, academic philosophers tend to focus on a very specific area with the goal of becoming an expert in that topic. Expertise is generally marked by the production of research work, such as a dissertation, book, or several research articles on the topic. Academic research jobs are typically secured with tenure, meaning that there are strong protections against unjustified firing. However, recent studies of federal data show that 73 percent of all academic jobs are not on the tenure track (meaning there is no chance to secure tenure). Additionally, 40 percent of all academic teaching positions are occupied by part-time faculty. The distribution of tenured, tenure-track, non-tenure track, and part-time employees varies greatly by institution type, with community colleges employing far more part-time instructors and far fewer tenured and tenure-track instructors. Meanwhile, research universities employ more tenured and tenure-track faculty and fewer part-time faculty (AAUP 2018).
Alternatives to Academic Philosophy
Philosophy undergraduate and graduate degree majors have many options outside of teaching and research in an academic environment. There is a widespread and somewhat mistaken belief that the purpose of selecting a college major is to prepare you for a specific career. While that may be true for some technical degrees, like engineering or nursing, it is generally not true for degrees in the liberal arts and sciences. Many students enter college with a desire to pursue a career in some area of business or commerce. Others plan to go on to a professional graduate school in medicine or law. While it may seem like the best career decision would be to major in business, premed, or prelaw, this notion is probably misguided.
The original idea behind a liberal arts and sciences education was that high school graduates could study a broad range of fields in the core areas of knowledge that are foundational for our culture, society, and civilization—areas like the natural and social sciences, literature, history, religion, and philosophy. By studying these fields, students gain insights into the key ideas, methods of investigation, questions, and discoveries that underlie modern civilization. Those insights give you a perspective on the world today that is informed by the history and learning that make today’s world possible. And that perspective can have a transformative effect that goes far beyond job preparation.
When philosophy majors are compared to other majors in terms of their long-term career earnings, it appears that philosophy majors do very well. While the starting salaries of philosophy majors are lower than some other majors, their mid-career salaries compare very favorably with majors in areas like finance, engineering, and math.
Additionally, philosophy majors have some of the highest LSAT and GMAT scores of any major (these are the tests generally required for admission to law school and business school, respectively). Quite a few former philosophy majors have gone on to become CEOs of large corporations, such as Reid Hoffman, cofounder of LinkedIn, and Carly Fiorina, CEO of Hewlett-Packard (Chideya 2015).
Many philosophers who have earned a graduate degree in philosophy and held positions as professors and instructors have made successful transitions to other careers, including start-ups, technology, business, ethics review boards, and public philosophy. Nigel Warburton, a former philosophy professor, started the philosophy podcast “Philosophy Bites” that is one of the most downloaded podcasts on academic topics. He also is an editor-in-chief of the online magazine Aeon. David Barnett, a former philosophy professor, founded the company PopSockets in 2012 after leaving academia. That company now employs over 200 people and generates hundreds of millions of dollars in annual revenue. Additionally, there are a growing number of technology, neuroscience, and medical firms that are specifically looking to hire philosophers to help with research and ethics reviews. Marcus Arvan maintains a public directory of academic philosophers who have found work outside of academia at Philosophers in Industry. In short, philosophers can be found nearly everywhere doing useful work and making good money. You should not let concerns about career prospects drive you away from studying philosophy.
Whether you go on to study philosophy or this is the only philosophy course you take, the habits of mind and techniques of philosophical thought you will learn can have a transformative effect. When you allow yourself to reflect on how a certain situation connects to the whole, when you critically examine your own biases and beliefs, when you investigate the world with an open mind, informed by rational methods of investigation, you will arrive at a richer sense of who you are and what your place is in the world.
Attribution Information
This chapter is an adaptation of the first chapter in Nathan Smith’s Introduction to Philosophy. Access for free at https://openstax.org/books/introduction-philosophy/pages/1-introduction
