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The 'hard problem of consciousness' is a specific philosophical challenge defined by David Chalmers that addresses why and how physical processes give rise to subjective phenomenal consciousness [1], [2], [3]. This concept is intrinsically linked to the broader study of consciousness, as it distinguishes the 'easy problems' of functional processing from the 'hard problem' of explaining the qualitative experience of consciousness itself [4], [5].
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The Hard Problem of Consciousness | Springer Nature Link link.springer.com 7 facts
quote“There is nevertheless one behavioural function that has an especially close tie to the hard problem. This behavioural function involves phenomenal reports: the things we say about consciousness (that is, about phenomenal consciousness). More specifically, many people make problem reports expressing our sense that consciousness poses a hard problem. I say things like ‘There is a hard problem of consciousness’, ‘It is hard to see how consciousness could be physical’, ‘Explaining behaviour does not explain consciousness’, and so on. ... The meta-problem of consciousness is (to a second approximation) the problem of explaining these problem reports. Problem reports are a fact of human behaviour. Because of this, the meta-problem of explaining them is strictly speaking one of the easy problems of consciousness. Although the meta-problem is strictly speaking an easy problem, it is deeply connected to the hard problem. We can reasonably hope that a solution to the meta-problem will shed significant light on the hard problem”
claimThe hard problem of consciousness includes the question of why psychophysical processes are correlated with phenomenal experience, effectively asking why consciousness exists.
claimThe core assumption of David Chalmers's 'hard problem of consciousness' is the irreducibility of consciousness to physical properties.
claimDavid Chalmers states that a solution to the hard problem requires an account of the relationship between physical processes and consciousness based on natural principles.
quote“The hard problem of consciousness [...] is that of explaining how and why physical processes give rise to phenomenal consciousness [sic!]. A solution to the hard problem would involve an account of the relation between physical processes and consciousness, explaining on the basis of natural principles how and why it is that physical processes are associated with states of experience”
claimDavid Chalmers formulated the 'Hard Problem of Consciousness' during the 1990s, which helped unify previously marginal and isolated alternative views on consciousness into a coherent discursive field.
claimDavid Chalmers's definition of the hard problem of consciousness presupposes five hypotheses: (A) Consciousness (Q) exists, (B) The physical (P) exists, (C) Naturalism counts, or Q and P are naturally and lawfully correlated, (D) Q is not reducible to P, and (E) P is not reducible to Q.
Hard problem of consciousness - Wikipedia en.wikipedia.org 7 facts
claimResearch 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.
referenceBrian 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.
claimType-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.
claimDavid 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.
referenceBrian 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.
perspectiveAnil 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.
perspectiveDavid Chalmers argues that the hard problem of consciousness demonstrates that consciousness is not physical.
Moving Forward on the Problem of Consciousness - David Chalmers consc.net 6 facts
claimDavid Chalmers argues that Patricia Churchland mischaracterizes his 'easy' versus 'hard' problem distinction by framing it as a division between specific cognitive problems like attention, learning, and memory on one hand, and the problem of consciousness on the other.
claimDavid Chalmers proposes that a combination of experimental study, phenomenological investigation, and philosophical analysis will lead to systematic principles bridging the domains of consciousness and physical reality, eventually revealing underlying fundamental laws.
perspectiveDavid Chalmers argues that the default assumption regarding consciousness is that there is a 'hard problem' of explanation, and that anyone attempting to argue otherwise bears the burden of providing significant and substantial evidence.
claimColin McGinn locates the 'hard problem' of consciousness in the non-spatial character of consciousness, specifically that consciousness lacks spatial extension and structure, making it difficult to fit into physical space.
perspectiveDavid Chalmers believes that a cognitive account of what can and cannot be communicated about consciousness will provide useful insights into the hard problem of consciousness.
claimDavid Chalmers distinguishes between the 'hard problem' of consciousness and what he terms the 'impossible problem,' which he defines as the requirement to provide a constitutive or non-causal reductive explanation of consciousness in physical terms.
Unknown source 4 facts
claimThe author of the Reddit comment argues that individuals who believe in the existence of a 'hard problem of consciousness' have failed to define what consciousness is.
claimThe 'hard problem' of consciousness is defined as the challenge of understanding why and how physical processes are associated with consciousness, specifically questioning why humans are not simply robots or philosophical zombies.
claimDavid Chalmers is a philosopher known for coining the term 'the hard problem of consciousness,' which refers to the question of how and why consciousness is produced from physical processes.
claimThe 'hard problem of consciousness' is the philosophical concept regarding how and why consciousness is produced from a physical basis.
Hard Problem of Consciousness | Internet Encyclopedia of Philosophy iep.utm.edu 4 facts
claimEliminativism is a response to the hard problem of consciousness that asserts there is no hard problem because consciousness does not exist.
claimThe 'hard problem of consciousness' is defined as the challenge of closing the 'explanatory gap' between consciousness and the physical.
claimThe hard problem of consciousness arises because qualitative and subjective aspects of conscious experience do not seem to fit into a physicalist ontology, which consists only of basic physical elements and their functional, dynamical, and structural combinations.
referenceJonathan Shear edited the book 'Explaining Consciousness: The Hard Problem', which was published by MIT Press in 1997.
Theories and Methods of Consciousness biomedres.us 4 facts
claimMaterialists argue that while post-materialists can account for the hard problem of consciousness using an external immaterial substance like a soul or spirit, they fail to explain how this external consciousness is combined or decombined in the brain to create the phenomenal unity of subjective, first-person consciousness.
claimTheories attempting to explain consciousness via quantum processes face the 'hard problem' and 'binding problem' of consciousness, specifically encountering issues related to quantum decoherence.
quote“The three kinds of evidence are also consistent with the brain as being a receiver of external consciousness information,” which eliminates the explanatory gap and the hard problem of consciousness.
claimFrom the materialist perspective, consciousness dies or is diminished following damage to or death of the brain, and there is no 'hard problem' of consciousness, only a 'binding problem' that will be understood through advancements in neuroscience techniques.
Global workspace theory - Wikipedia en.wikipedia.org 2 facts
claimDalton criticized the global workspace theory on the grounds that it provides an account of the cognitive function of consciousness but fails to address the hard problem of consciousness, which concerns the nature of consciousness and how mental processes become conscious.
claimA. C. Elitzur's 1997 paper abstract argued that while the global workspace theory does not address the hard problem of consciousness, it constrains theories that do and provides insights into the relationship between consciousness and cognition.
David Chalmers - Lex Fridman Podcast #69 - YouTube youtube.com 2 facts
The Problem of Hard and Easy Problems cambridge.org 2 facts
claimThe validity of David Chalmers' criterion for the 'hard problem' of consciousness depends on the claim that it is not a conceptual mistake to state that consciousness remains unexplained even after functional correlates are explained.
claimDavid Chalmers' argument regarding the 'hard problem' of consciousness presupposes that a principled distinction between easy and hard problems exists and that consciousness uniquely falls into the 'hard' category when these criteria are applied.
A harder problem of consciousness: reflections on a 50-year quest ... frontiersin.org 2 facts
claimIntegrated Information Theory reverses the Hard Problem of Consciousness by beginning with consciousness and determining what physical systems could instantiate it, rather than explaining how the brain generates consciousness.
perspectiveThe author claims that while Integrated Information Theory may provide a solution to consciousness, it operates within a universe so alien that comprehending it leads to an even harder problem of consciousness.
Quantum Theory of Consciousness - Scirp.org. scirp.org 2 facts
claimThe authors propose a Quantum Theory of Consciousness (QTOC) based on a new interpretation of quantum physics, suggesting that consciousness is a quantum phenomenon and that solving the quantum measurement problem can lead to solving the hard problem of consciousness.
claimDavid Chalmers proposes the principle of structural coherence as a speculative principle to solve the hard problem of consciousness, which posits an isomorphism between the structures of consciousness and awareness.
Critique of Panpsychism: Philosophical Coherence and Scientific ... thequran.love 1 fact
claimPanpsychism posits that consciousness is a fundamental feature of the universe, comparable to mass or charge, which serves as a proposed solution to the hard problem of consciousness.
Panpsychism (Stanford Encyclopedia of Philosophy/Fall 2015 Edition) plato.stanford.edu 1 fact
claimDavid Chalmers refers to the difficulty of explaining consciousness as the 'hard problem of consciousness,' which is also known as the 'explanatory gap' or the 'generation problem'.
Consciousness (Stanford Encyclopedia of Philosophy/Fall 2025 ... plato.stanford.edu 1 fact
referenceJ. Shear published 'Explaining Consciousness: The Hard Problem' in 1997.
Panpsychism (Stanford Encyclopedia of Philosophy/Fall 2025 Edition) plato.stanford.edu 1 fact
perspectivePhilosophers hold differing views on the 'hard problem of consciousness,' with some arguing it is a confusion, others believing it is a genuine problem solvable by future scientific investigation, and some suggesting a major scientific breakthrough (a 'Darwin of consciousness') is required.
Good Old-Fashioned Artificial Consciousness and the Intermediate ... frontiersin.org 1 fact
referenceStephen Grossberg published 'Towards solving the hard problem of consciousness: the varieties of brain resonances and the conscious experiences that they support' in Neural Networks in 2017.
The Conscious Mind - Wikipedia en.wikipedia.org 1 fact
referenceSean Carroll interviewed David Chalmers in December 2018 for Episode 25 of his podcast, covering topics including consciousness, the hard problem of consciousness, and living in a simulation.
Episode 2: The Hard Problem of Consciousness – David Chalmers ... futurepointdigital.substack.com 1 fact
claimDavid Chalmers distinguishes between the 'easy problems' of consciousness, which involve functions like focusing attention, responding to stimuli, and recalling memories, and the 'hard problem,' which asks why these processes feel like something to the subject.
Consciousness and Cognitive Sciences journal-psychoanalysis.eu 1 fact
referenceChalmers, D. (1995) published 'Facing up to the Problem of Consciousness' in Journal of Consciousness Studies, 2 (3), pp. 200-219.
David Chalmers on the Hard Problem of Consciousness : r/philosophy reddit.com 1 fact
claimThe thought exercise discussed in the context of David Chalmers' work on the Hard Problem of Consciousness is designed to demonstrate that individuals could, in theory, behave like humans without possessing the qualia of consciousness.