The hard problem of consciousness is explaining why any physical state is conscious rather than nonconscious.

Evidence

Hard problem of consciousness (Wikipedia)

corroborated: 3 independent passages support this claim
XREF: connects to: Human knowledge fails to answer life’s fundamental questions. — Leo Tolstoy, A Confession, 64; Science is done by brains and people, so claiming science can’t explain consciousness is nonsensical. — Science can’t explain consciousness because …; Consciousness presents a ‘hard problem’ to scholars — how the physical body gives rise to subjective experience. — The ‘Hard Problem of Consciousness’ Arises from Human …

Consciousness presents a ‘hard problem’ to scholars — how the physical body gives rise to subjective experience. (similarity 0.93)
Reductionists accept only ‘temporary mysterianism’—current ignorance about consciousness that future science may resolve—versus ‘permanent mysterianism,’ which claims the mystery is unsolvable. (similarity 0.84)
Consciousness is a phenomenon that is widely considered amenable to scientific investigation. (similarity 0.80)
Science is done by brains and people, so claiming science can’t explain consciousness is nonsensical. (similarity 0.80)
New mysterianism proposes that the hard problem of consciousness cannot be resolved by humans. (similarity 0.79)
Understanding consciousness requires not treating organisms like machines and minds like code. (similarity 0.79)
Science has failed to adequately answer how human consciousness developed or what it actually is. (similarity 0.79)
As McGinn argued, introspection cannot tell us how physical processes give rise to consciousness. (similarity 0.78)