For a history of direct realist theories, see Direct and indirect realism § History.
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This contradicts epiphenomenalism because it involves a conscious state causing an overt speech behavior. Since the Mary's room thought experiment seems to create this contradiction, there must be something wrong with it. Jackson now believes that the physicalist approach (from a perspective of indirect realism) provides the better explanation. In contrast to epiphenomenalism, Jackson says that the experience of red is entirely contained in the brain, and the experience immediately causes further changes in the brain (e.g.
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Epistemological idealism suggests that everything we experience and know is of a mental nature—sense data in philosophical jargon. Although it is sometimes employed to argue in favor of metaphysical idealism, in principle epistemological idealism makes no claim about whether sense data are grounded in reality. As such, it is a container for both indirect realism and idealism. This is the version of epistemological idealism which interested Ludwig Boltzmann; it had roots in the positivism of Ernst Mach and Gustav Kirchhoff plus a number of aspects of the Kantianism or neo-Kantianism of Hermann von Helmholtz and Heinrich Hertz.
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Representationalism (also known as indirect realism) is the view that representations are the main way we access external reality. The representational theory of mind attempts to explain the nature of ideas, concepts and other mental content in contemporary philosophy of mind, cognitive science and experimental psychology. In contrast to theories of naive or direct realism, the representational theory of mind postulates the actual existence of mental representations which act as intermediaries between the observing subject and the objects, processes or other entities observed in the external world. These intermediaries stand for or represent to the mind the objects of that world.
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This concept has been extremely influential in the field of design and ergonomics: see for example the work of Donald Norman who interacted with Gibson and who adapted Gibson's idea of affordances (with significant conceptual amendments) to industrial design. In his later work (such as, for example, The Ecological Approach to Visual Perception (1979)), Gibson became more philosophical and criticised cognitivism in the same way he had attacked behaviorism before. Gibson argued strongly in favour of direct perception and direct realism (as pioneered by the Scottish philosopher Thomas Reid), as opposed to cognitivist indirect realism. He termed his new approach ecological psychology.
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John Locke notably held that the world only contains the primary qualities that feature in a corpuscularian scientific account of the world, and that secondary qualities are in some sense subjective and depend for their existence upon the presence of some perceiver who can observe the objects. One should add, however, that naïve realism does not necessarily claim that reality is only what we see, hear, etc. Likewise, scientific realism does not claim that reality is only what can be described by fundamental physics. It follows that the relevant distinction to make is not between naïve and scientific realism but between direct and indirect realism.
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René Descartes, David Chalmers) that subjective conscious experience constitutes a separate effect that demands another cause that is either outside the physical world (dualism) or due to an as yet unknown physical phenomenon (see for instance quantum mind, indirect realism). Proponents of dualism claim that the mind is substantially and qualitatively different from the brain and that the existence of something metaphysically extra-physical is required to "fill the gap". Similarly, some argue that there are further facts—facts that do not follow logically from the physical facts of the world—about conscious experience. For example, they argue that what it is like to experience seeing red does not follow logically from the physical facts of the world.
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Naïve Realism, Theory of Knowledge.com. They are composed of matter, occupy space, and have properties, such as size, shape, texture, smell, taste and colour, that are usually perceived correctly. The indirect realist, by contrast, holds that the objects of perception are simply representations of reality based on sensory inputs, and thus adheres to the primary/secondary quality distinction in ascribing properties to external objects. In addition to indirect realism, naïve realism can also be contrasted with some forms of idealism, which claim that no world exists apart from mind- dependent ideas, and some forms of philosophical skepticism, which say that we cannot trust our senses or prove that we are not radically deceived in our beliefs.
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E. J. Lowe, of Durham University, denies that holding to indirect realism (in which we have access only to sensory features internal to the brain) necessarily implies a Cartesian dualism. He agrees with Bertrand Russell that our "retinal images"—that is, the distributions across our retinas—are connected to "patterns of neural activity in the cortex" (Lowe 1986). He defends a version of the Causal Theory of Perception in which a causal path can be traced between the external object and the perception of it. He is careful to deny that we do any inferring from the sensory field, a view which he believes allows us to found an access to knowledge on that causal connection.
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Naïve realism argues we perceive the world directly In philosophy of perception and philosophy of mind, naïve realism (also known as direct realism, perceptual realism, or common sense realism) is the idea that the senses provide us with direct awareness of objects as they really are. When referred to as direct realism, naïve realism is often contrasted with indirect realism. According to the naïve realist, the objects of perception are not merely representations of external objects, but are in fact those external objects themselves. The naïve realist is typically also a metaphysical realist, holding that these objects continue to obey the laws of physics and retain all of their properties regardless of whether or not there is anyone to observe them.
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Gautama Buddha is believed to have directed all monks and scholars to thoroughly analyze his words and not adopt them for the sake of respect. He taught rationalism and trust in one's own reasoning and belief, and spoke about the distinction between the mere reception of truth and the knowledge of truth which involves rational conviction.Amguttaranikaya, Kalamasutta The later Buddhist thinkers such as the Sautrantikas, opposed to the Yogacaras who deny the reality of external objects reducing them to cognitions, advocating indirect realism recognized the reality of external objects which produced their own cognitions and imprinted their forms on them as being basically perceptible; they developed the doctrine of impermanence into the ontological doctrine of momentarinessSaddarsanasamgraha ii.45-47 Dharmakirti considered the so-called external objects as mere sensations, that all object-cognitions are due to the revival of the sub-conscious impressions deposited in the mind which are not excited by external objects.
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However, he stated that "new implications, applications and integrations can always be discovered". Objectivism's main tenets are that reality exists independently of consciousness, that human beings have direct contact with reality through sense perception (see direct and indirect realism), that one can attain objective knowledge from perception through the process of concept formation and inductive logic, that the proper moral purpose of one's life is the pursuit of one's own happiness (see rational egoism), that the only social system consistent with this morality is one that displays full respect for individual rights embodied in laissez-faire capitalism, and that the role of art in human life is to transform humans' metaphysical ideas by selective reproduction of reality into a physical form—a work of art—that one can comprehend and to which one can respond emotionally. Academic philosophers have mostly ignored or rejected Rand's philosophy.; ; ; ; ; ; Nonetheless, Objectivism has been a significant influence among libertarians and American conservatives.
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