Realism

Realism is a broad philosophical stance that asserts the existence of an objective reality independent of human perception or consciousness. In other words, realism holds that the world, including objects, events, and entities, exists as they are, regardless of whether or not we perceive them. Realism emphasizes that truth and facts are not simply constructs of the mind, but correspond to an external reality that exists outside of our thoughts, perceptions, and beliefs.

Realism contrasts with idealism, which argues that reality is mentally constructed or dependent on perception. Realism, therefore, upholds the existence of an objective, mind-independent world.

Key Aspects of Realism:

1. Metaphysical Realism:

   • This is the view that the external world exists independently of the mind. In this view, objects and their properties do not rely on being perceived or conceived by a mind.
   • For example, a tree continues to exist even if no one is observing it. The tree’s properties (such as its height, color, and shape) exist independently of any observer’s mind.
   • The core idea of metaphysical realism is that there is a reality "out there" that is structured and exists independently of human cognition.

2. Epistemological Realism:

   • Epistemological realism is concerned with how we can know the world. It asserts that it is possible to know the world as it truly is, or at least to have reliable knowledge about the external world.
   • This position holds that human perception and scientific inquiry can access the objective world, and our knowledge can correspond to the reality we seek to understand.

3. Scientific Realism:

   • Scientific realism is a form of epistemological realism that argues that the best scientific theories and models provide an accurate description of the world, including entities that are unobservable (like atoms, molecules, or quarks).
   • According to scientific realism, when a scientific theory makes predictions and consistently corresponds to observed phenomena, it is reasonable to believe that the theory describes reality as it is, including the existence of things we cannot directly observe.

4. Moral Realism:

   • Moral realism is the belief that there are objective moral facts or truths that exist independently of human opinion or belief. According to this view, actions can be morally right or wrong regardless of what individuals or societies think about them.
   • For instance, the statement "torturing others for fun is morally wrong" would be true regardless of whether people or cultures believe it to be true.

Types of Realism:

1. Naive Realism (also called Direct Realism):

   • Naive realism is the idea that we perceive the world directly as it is. According to naive realists, the world is exactly as we see it: objects in the world possess their properties directly, and our senses accurately reflect the nature of the external world.
   • For example, if you see a red apple, naive realism suggests that the apple really has the color red in it, and your perception directly corresponds to the way the world is.
   • However, this view is often critiqued by philosophers, especially since it does not account for subjective experiences or illusions, such as optical illusions, that suggest our perceptions may be misleading.

2. Scientific Realism:

   • As mentioned earlier, scientific realism posits that the theories and models offered by successful science correspond to the actual structure of the world. Even though we may not always be able to observe all of the entities described by science (like atoms or black holes), we have good reason to believe that they exist and function as described by scientific theories.
   • A key feature of scientific realism is the idea of truth or approximate truth—that scientific theories aim to approximate the true structure of the world.

3. Critical Realism:

   • Critical realism, developed by philosopher Roy Bhaskar, argues that there is an objective reality, but it is not directly accessible to us. Our understanding of the world is mediated by social, cultural, and cognitive structures. This view combines a belief in an objective reality with an acknowledgment that our knowledge of that reality is always filtered through human perception and interpretation.
   • Critical realists believe that scientific knowledge can approach the truth, but it is always incomplete and influenced by human context and experience.

4. Realism in Ethics:

   • Moral realism, as mentioned earlier, holds that moral truths exist independently of human attitudes or beliefs. This view contrasts with moral anti-realism, which suggests that moral statements are merely expressions of our emotions, social conventions, or personal preferences.
   • An example of moral realism would be the claim that "murder is wrong" is objectively true, regardless of societal norms or personal opinions.

5. Platonic Realism:

   • This form of realism is often associated with Plato, who argued that abstract objects (like numbers, geometric shapes, or concepts like justice and beauty) exist in a non-material realm of perfect forms or ideas. According to Platonic realism, these abstract objects are not simply human inventions, but rather have an independent existence outside of our minds.
   • For example, the concept of "number 2" exists independently of any particular mind, and mathematical truths (like 2 + 2 = 4) are objective facts about the world.

6. Realism in Metaphysics:

   • In metaphysics, realism often concerns the nature of existence and the relationship between objects and their properties. Realists assert that objects exist with certain properties that do not depend on being observed by a mind. For instance, a tree has the property of being "green" even when no one is present to observe it.
   • Realism about universals is the view that properties (such as "redness" or "being round") exist independently of particular objects. So, "redness" is not just a property of a red apple; it exists as a universal property that can be instantiated in multiple objects.

Key Philosophers Associated with Realism:

1. Aristotle:

   • Aristotle is often seen as an early proponent of realism, particularly in his belief in the objective existence of substances and their properties. Unlike Plato, who believed in the world of forms, Aristotle argued that forms exist only within the physical objects themselves. For example, a tree is not just a shadow of an ideal form but a real, physical substance with its own essence.

2. René Descartes:

   • Descartes is sometimes associated with a form of realism because, while he was skeptical about the nature of sensory perception, he believed in the existence of a material world that is distinct from the mind. His famous dictum, "Cogito, ergo sum" ("I think, therefore I am"), asserts the existence of the self as a thinking being, but also presumes the existence of an external world.

3. John Locke:

   • Locke, an empiricist, argued for a kind of realism in which objects exist independently of the mind but are only known through sensory perception. He believed that while we can never know the world as it is in itself (the "primary qualities" of objects), we can know how it appears to us through our senses.

4. David Armstrong:

   • Armstrong was an influential 20th-century philosopher who argued for scientific realism, the view that the best scientific theories give us true or approximately true descriptions of the world. He believed in the existence of objective facts about the world that science can uncover.

5. G. E. Moore:

   • G. E. Moore, a leading figure in analytic philosophy, argued for a form of common-sense realism. He believed that the world exists independently of our perceptions and that ordinary objects like tables and chairs are just as real as we experience them.

Criticisms of Realism:

• Problem of Perception: One of the main challenges for realism is explaining how we can have knowledge of a mind-independent world given that all our knowledge is mediated by our senses, which can be fallible or misleading.
• Scientific Anti-Realism: Some philosophers, such as Karl Popper and Thomas Kuhn, have argued that scientific theories do not necessarily reflect an objective reality. Instead, theories are human-made models that are useful for explaining and predicting phenomena, but may not correspond to an independent reality.
• Idealism vs. Realism: Idealists argue that reality cannot be independent of the mind, while realists contend that an objective world exists regardless of human perception. This debate forms a key divide in philosophy.

Conclusion:

Realism is the view that the external world exists independently of our perceptions and thoughts. It asserts that the objects, events, and properties of the world are real, whether or not we are aware of them. Realism takes many forms, from metaphysical realism, which emphasizes the existence of the world independent of the mind, to scientific realism, which suggests that scientific theories give us true knowledge about the world. Despite various criticisms, realism remains a central position in contemporary philosophy, especially in the philosophy of science and ethics.