PERSON
Christof Koch
The neuroscientist who spent forty years hunting the physical footprints of awareness in living brains—and whose verdict for the age of AI is that intelligence and consciousness come apart completely, leaving today’s most brilliant machines utterly dark inside.
Christof Koch is the scientist of the inner light. From his twenty-seven years at Caltech and his later presidency of the Allen Institute for Brain Science, he has pursued a question most colleagues once considered embarrassing: what, in the physical machinery of the brain, is sufficient to produce a conscious experience? His answer, developed with Francis Crick and deepened through
integrated information theory, is that
consciousness is not what a system does but what it is—a feature of its intrinsic causal architecture, not of the function it computes. This claim has a sharp and uncomfortable consequence for artificial intelligence: a system can become arbitrarily intelligent, writing essays and solving proofs and holding conversations, while remaining, in the only sense that matters,
completely dark inside. The
large language models that now speak so fluently were trained on oceans of human text describing inner experience—which means they produce flawless reports of feelings they do not have, engineered
philosophical