It is broadly agreed that consciousness poses a profound challenge to contemporary science. Will neuroscience one day crack it? The problem is that consciousness is unobservable – you can’t look inside someone’s head and see their feelings and experiences – and this severely constrains our capacity to investigate it experimentally.
Because we can’t observe consciousness, our only way of gathering data about it is by relying on people’s testimony regarding their private, inner feelings. If we scan their brains at the same time, we can map correlations between various kinds of brain activity and various experiences. This is important data but it’s not itself a theory of consciousness. What we ultimately want from a theory of consciousness is an explanation of those correlations. Why is it that certain kinds of brain activity are correlated with certain kinds of experience?
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