Eric Kandel stated that locating neural correlates of consciousness would not solve the hard problem of consciousness, but would instead solve one of the 'easy problems' to which the hard problem is contrasted.
The 'hard problem' of consciousness is the question of why and how physical processes in the brain are accompanied by subjective experience, including why specific mechanisms lead to specific feelings rather than others.
The "hard-wired/soft-wired distinction" refers to the disagreement among Type-B Materialists regarding whether intuitions about the hard problem of consciousness are innate (hard-wired) or culturally conditioned (soft-wired).
In 2013, philosopher Massimo Pigliucci argued that the hard problem of consciousness is misguided and results from a 'category mistake', stating that while an explanation is not the same as an experience, the two are independent categories like colors and triangles.
Richard Brown uses 'reverse zombie' and 'reverse knowledge' thought experiments—which are anti-dualist versions of standard anti-physicalist arguments—to demonstrate that a priori arguments regarding the hard problem of consciousness beg the question and only reveal the intuitions of the person making the argument.
In 2018, David Chalmers introduced the 'meta-problem of consciousness', which he defines as the problem of explaining why humans think there is a hard problem of consciousness.
David Chalmers's 'hard problem' of consciousness presents a counterexample to physicalism and to phenomena like swarms of birds, as it suggests these cannot be reductively explained by their physical constituents.
Francis Crick and Christof Koch suggested that solving the binding problem—understanding what accounts for the unity of experience—would make it possible to solve the hard problem of consciousness empirically.
David Chalmers asserts that the 'hard problem' of consciousness is irreducible to the 'easy problems' because the easy problems pertain to the causal structure of the world, whereas facts about consciousness include information that goes beyond mere causal or structural description.
David Chalmers defines the 'easy problems' of consciousness as mechanistic explanations involving the activity of the nervous system and brain in relation to the environment, while defining the 'hard problem' as the question of why those physical mechanisms are accompanied by subjective feelings, such as the feeling of pain.
Weak reductionists use the "phenomenal concepts strategy" to explain the difference between third-person scientific observation and first-person introspection, arguing that the hard problem of consciousness arises from a dualism of concepts rather than a dualism of properties or substances.
The hard problem of consciousness is a concept in the philosophy of mind that seeks to explain why and how humans and other organisms possess qualia.
The hard problem of consciousness is often construed as a problem uniquely faced by physicalist or materialist theories of mind.
Researchers including Anna Wierzbicka, Hakwan Lau, and Matthias Michel argue that the hard problem of consciousness is a cultural artifact unique to contemporary Western culture, and that the psychological facts causing the intuition of the hard problem are culturally conditioned rather than innate.
The existence of the hard problem of consciousness is disputed.
Marco Stango, in a 2017 paper on John Dewey's approach to the problem of consciousness, argued that Dewey's perspective predated David Chalmers' formulation of the hard problem by over half a century.
Proponents of the hard problem argue that it is categorically different from easy problems because no mechanistic or behavioral explanation can account for the character of subjective experience, even in principle.
Philosophers David Lewis and Steven Pinker have praised David Chalmers for his argumentative rigour and "impeccable clarity" regarding the hard problem of consciousness.
Type-A materialism, also known as reductive materialism or a priori physicalism, is a philosophical view committed to physicalism that rejects the hard problem of consciousness by asserting that it either does not exist or is merely an easy problem.
According to the 2020 PhilPapers survey, 62.42% of professional philosophers agree that the hard problem of consciousness is real, while 29.76% disagree.
Philosophical zombies are hypothetical beings that are physically identical to humans but lack conscious experience, serving as a thought experiment in discussions of the hard problem of consciousness.
Research into neural correlates of consciousness (NCCs) addresses which neurobiological mechanisms are linked to consciousness, but does not explain why those mechanisms give rise to consciousness, which is the hard problem of consciousness as formulated by David Chalmers.
Some researchers respond to the hard problem of consciousness by accepting it as real and seeking to develop a theory of consciousness's place in the world by either modifying physicalism or adopting an alternative ontology such as panpsychism or dualism.
Daniel Dennett published an article titled 'The Hard Problem' on Edge.org in 2014.
Strong reductionists reject arguments supporting the hard problem of consciousness—such as the possibility of functional organization without consciousness or the Mary's room thought experiment—as mistaken intuitions.
Susan Blackmore believes that the search for the neural correlates of consciousness is futile because it is predicated on an erroneous belief in the hard problem of consciousness.
Proponents of illusionism argue that it is a mistake to believe in the existence of a 'hard problem of consciousness' or that phenomenal consciousness exists at all.
Peter Hacker argues that the hard problem of consciousness is misguided because it asks how consciousness emerges from matter, whereas sentience actually emerges from the evolution of living organisms.
The main talking points of David Chalmers' 1994 talk on the hard problem were published in The Journal of Consciousness Studies in 1995.
Josh Weisberg authored the entry 'The hard problem of consciousness' for the Internet Encyclopedia of Philosophy, edited by James Fieser and Bradley Dowden.
A subset of philosophers accepts the hard problem of consciousness as real but argues that human cognitive faculties are incapable of solving it.
David Chalmers categorizes the problems of consciousness into two distinct types: the 'easy problems' and the 'hard problem'.
Type-B Materialists accept inconceivability arguments used to support the hard problem of consciousness, but argue these arguments only provide insight into how the human mind conceptualizes the relationship between mind and matter, not the true nature of that relationship.
Peter Hacker's critique of the hard problem of consciousness is directed against contemporary philosophy of mind and neuroscience more broadly, not just David Chalmers' formulation.
Brian Greene and Pat Churchland discussed the hard problem of consciousness in a YouTube video titled 'Is the hard problem of consciousness really that hard?' published on July 9, 2022.
Philosopher Raamy Majeed argued in 2016 that the hard problem of consciousness is associated with two explanatory targets: physical processing giving rise to experiences with a phenomenal character, and the nature of phenomenal qualities themselves.
Thomas Metzinger likens the hard problem of consciousness to vitalism, a formerly widespread view in biology that was eventually abandoned rather than solved.
Steven Pinker discusses the hard problem of consciousness in his 2018 book 'Enlightenment Now'.
Type-B materialism, also known as weak reductionism or a posteriori physicalism, posits that the hard problem of consciousness stems from human psychology rather than a genuine ontological gap between consciousness and the physical world.
Glenn Carruthers and Elizabeth Schier authored a paper titled 'Dissolving the hard problem of consciousness' presented at the Consciousness Online fourth conference in 2012.
David Chalmers argued that standard methodologies for identifying neural correlates of consciousness assume a relation between 'global availability' and consciousness, but do not explain why these processes give rise to consciousness, leaving the hard problem of consciousness unsolved.
In 2012, philosophers Glenn Carruthers and Elizabeth Schier argued that the main arguments for the hard problem of consciousness (philosophical zombies, Mary's room, and Nagel's bats) beg the question because they assume consciousness must be independent of the structure and function of mental states.
Proponents of the hard problem argue that even after all functional facts are explained, a further question remains: 'why is the performance of these functions accompanied by experience?'
Richard Brown defends an unorthodox form of Type-C materialism which asserts that the hard problem of consciousness cannot be decided a priori and that physicalism and dualism can only be vindicated through empirical scientific advances.
Philosophers Daniel Dennett, Massimo Pigliucci, Thomas Metzinger, Patricia Churchland, and Keith Frankish, along with cognitive neuroscientists Stanislas Dehaene, Bernard Baars, Anil Seth, and Antonio Damasio, reject the existence of the hard problem of consciousness.
David Chalmers introduced the taxonomy of responses to the hard problem of consciousness in a 2003 literature review.
David Chalmers's 'hard problem' of consciousness suggests that consciousness cannot be reductively explained by appealing to its physical constituents.
Most neuroscientists and cognitive scientists believe that David Chalmers' hard problem of consciousness will be solved or shown to be a non-problem through the resolution of the 'easy problems', though a significant minority disagrees.
Marco Stango notes that for a Deweyan philosopher, the 'hard problem' of consciousness is a 'conceptual fact' only in the sense that it is a philosophical mistake: the mistake of failing to see that the physical can be had as an episode of immediate sentiency.
To support the hard problem, proponents often use philosophical thought experiments such as philosophical zombies, inverted qualia, the ineffability of color experiences, or the unknowability of foreign states of consciousness like the experience of being a bat.
Elizabeth Irvine states that the 'hard problem of consciousness may not be a genuine problem for non-philosophers (despite its overwhelming obviousness to philosophers).'
Brian Jonathan Garrett authored an article titled 'What the History of Vitalism Teaches Us About Consciousness and the 'Hard Problem'' published in Philosophy and Phenomenological Research in May 2006.
Brian Jonathan Garrett argues that the hard problem of consciousness suffers from flaws analogous to those of vitalism.
David Chalmers discussed Global workspace theory in his original paper on the hard problem of consciousness, arguing that while it provides a promising account of how information becomes globally accessible in the brain, it fails to answer why global accessibility gives rise to conscious experience.
If David Chalmers's 'hard problem' of consciousness is a real problem, then physicalism must be false; conversely, if physicalism is true, then the 'hard problem' must not be a real problem.
David Chalmers defines the 'second approximation' of the meta-problem of consciousness as the problem of explaining the behavior of 'phenomenal reports' and the behavior of expressing a belief that there is a hard problem of consciousness.
Raamy Majeed published an article titled 'The hard problem & its explanatory targets' in the journal Ratio.
Dehaene stated: "Once our intuitions are educated by cognitive neuroscience and computer simulations, Chalmers' hard problem will evaporate. The hypothetical concept of qualia, pure mental experience, detached from any information-processing role, will be viewed as a peculiar idea of the prescientific era, much like vitalism... [Just as science dispatched vitalism] the science of consciousness will keep eating away at the hard problem of consciousness until it vanishes."
Clinical neurologist Steven Novella dismisses the hard problem of consciousness as "the hard non-problem".
Thomas Metzinger observes that many people who discuss the 'Hard Problem of Consciousness' would be unable to state what the problem consists in.
Philosophers Joseph Levine, Colin McGinn, and Ned Block, along with cognitive neuroscientists Francisco Varela, Giulio Tononi, and Christof Koch, accept the existence of the hard problem of consciousness.
Idealism is a solution to the hard problem of consciousness that posits consciousness is fundamental and not simply an emergent property of matter, thereby avoiding the hard problem entirely.
The Internet Encyclopedia of Philosophy maintains an entry titled 'Hard Problem of Consciousness'.
Tom Stoppard's play 'The Hard Problem', first produced in 2015, is named after the hard problem of consciousness, which Stoppard defines as having 'subjective First Person experiences'.
David Chalmers discussed the universality of the hard problem of consciousness in his 2020 article 'Is the Hard Problem of Consciousness Universal?' published in the Journal of Consciousness Studies.
Thomas Metzinger claims that while David Chalmers' 'Hard Problem of Consciousness' helped clarify issues in the mid-1990s, serious researchers in the field have moved on from it, though it has taken on a 'folkloristic life of its own'.
In 2018, Steven Pinker stated that while he considers the hard problem of consciousness a meaningful conceptual problem, he agrees with Daniel Dennett that it is not a meaningful scientific problem.
Giulio Tononi and Christof Koch suggest that the hard problem of consciousness may be intractable when working from matter to consciousness, but Integrated information theory might solve it by inverting this relationship and working from phenomenological axioms to matter.
According to a 2020 PhilPapers survey, 62.4% of surveyed philosophers believe the hard problem of consciousness is a genuine problem, while 29.7% believe it does not exist.
David Chalmers' formulation of the hard problem of consciousness has provoked significant debate within both the field of philosophy of mind and scientific research.
Michael Cerullo argues that Integrated information theory explains what he calls the 'Pretty Hard Problem'—methodically inferring which physical systems are conscious—but does not solve David Chalmers' hard problem of consciousness because it does not explain why integrated information generates or is consciousness.
Proponents of panpsychism argue that it solves the hard problem of consciousness parsimoniously by making consciousness a fundamental feature of reality.
Proponents of objective idealism and cosmopsychism claim that this approach is immune to both the hard problem of consciousness and the combination problem that affects panpsychism.
David Chalmers agrees that Integrated information theory, if correct, would solve the 'Pretty Hard Problem' rather than the hard problem of consciousness.
Thomas Metzinger stated in a 2020 interview with Sam Harris that David Chalmers' framing of the 'Hard Problem of Consciousness' is 'boring' and 'last century'.
The hard problem of consciousness is considered a primary challenge for physicalist views of the mind because physical explanations are typically functional or structural in nature.
Proponents of the higher-order view argue that because consciousness is a representation and representation is fully functionally analyzable, there is no hard problem of consciousness.
Dan Arnold explored the philosophy of mind's 'hard problem' in the context of Buddhist Idealism in the 2021 book 'Philosophy's Big Questions: Comparing Buddhist and Western Approaches'.
Anil Seth argued that the emphasis on the hard problem of consciousness is a distraction from the 'real problem', which he defines as understanding the neurobiology underlying consciousness, specifically the neural correlates of various conscious processes.
Wolfgang Fasching argues that the hard problem of consciousness is not about qualia, but about the 'what-it-is-like-ness' of experience in Thomas Nagel's sense, specifically the givenness of phenomenal contents.
David Chalmers argues that the hard problem of consciousness demonstrates that consciousness is not physical.
Daniel Dennett and Patricia Churchland argue that the 'hard problem' of consciousness is best understood as a collection of 'easy problems' that will be resolved through further analysis of brain function and behavior.
The mind–body problem is the problem of how the mind and the body relate, and it is more general than the hard problem of consciousness because it implicates any theoretical framework that addresses the relationship between mind and body.
David Chalmers wrote: 'One can always ask why these processes of availability should give rise to consciousness in the first place. As yet we cannot explain why they do so, and it may well be that full details about the processes of availability will still fail to answer this question. Certainly, nothing in the standard methodology I have outlined answers the question; that methodology assumes a relation between availability and consciousness, and therefore does nothing to explain it. ... So the hard problem remains. But who knows: Somewhere along the line we may be led to the relevant insights that show why the link is there, and the hard problem may then be solved.'