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Says neuroscientist Anil K. Seth at Aeon:
Let’s begin with David Chalmers’s influential distinction, inherited from Descartes, between the ‘easy problem’ and the ‘hard problem’. The ‘easy problem’ is to understand how the brain (and body) gives rise to perception, cognition, learning and behaviour. The ‘hard’ problem is to understand why and how any of this should be associated with consciousness at all: why aren’t we just robots, or philosophical zombies, without any inner universe? It’s tempting to think that solving the easy problem (whatever this might mean) would get us nowhere in solving the hard problem, leaving the brain basis of consciousness a total mystery.
But there is an alternative, which I like to call the real problem: how to account for the various properties of consciousness in terms of biological mechanisms; without pretending it doesn’t exist (easy problem) and without worrying too much about explaining its existence in the first place (hard problem). (People familiar with ‘neurophenomenology’ will see some similarities with this way of putting things – but there are differences too, as we will see.) More.
Well, of course that will work as long as one acknowledges that one is giving up on the hard problem, one that even Richard Dawkins acknowledges.
How hard a problem? Neurosurgeon Michael Egnor can help:
I’m a neuroscientist and professor of neurosurgery. The mind-brain question haunts me. Neurosurgeons alter the brain on a daily basis, and what we find doesn’t fit the prevailing view that the brain runs the mind as computer hardware runs software.
I have scores of patients who are missing large areas of their brains, yet who have quite good minds. I have a patient born with two-thirds of her brain absent. She’s a normal junior high kid who loves to play soccer. Another patient, missing a similar amount of brain tissue, is an accomplished musician with a master’s degree in English.
The hard problem is explaining consciousness in the absence of supposed essential mechanisms.
See also: Dawkins: Maybe the hard problem of consciousness can never be solved
and
Would we give up naturalism to solve the hard problem of consciousness?