PUTNAM, HILARY

Putnam: a brain stimulated to experience a world cannot consistently formulate the claim that it is a brain in a vat. Limbo's Preview Mode is a vat with a button. The applicant is told they are in preview; the preview is functionally identical to the verified state, except the verification cannot be done. The applicant cannot consistently leave Preview Mode by examining its contents. The institution names the vat. The naming does not unvat.