PERSON
Ned Block
The philosopher who spent fifty years guarding the doorway between mind and mechanism—showing, through thought experiments of escalating audacity, that a system can do everything a mind does and still be dark inside, and that the question of whether our machines are conscious is not merely unanswered but may be, in a precise and disturbing sense, unanswerable.
Ned Block was born in Chicago in 1942, earned his doctorate at Harvard under Hilary Putnam in 1971, spent twenty-five years at MIT, and since 1996 has been a Silver Professor at New York University. His career is best understood as a single sustained act of refusal: again and again, when philosophy of mind reached for a tidy theory that would dissolve the mystery of consciousness into something mechanical and manageable, Block planted himself in the way. His landmark 1995 paper introduced the distinction between
phenomenal consciousness—the felt quality of experience, the redness of red—and
access consciousness—the functional availability of a mental state for reasoning, report, and behavioral control. The two travel together in ordinary human life so reliably that we never notice they are different; Block's enduring contribution was to show that they can come apart,