Guattari’s forehead
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Hello #Philosophy tooters.

What's the earlierst source of "brain in a vat" thought experiments?

That is, where were brains in vats first used to motivate skepticism about the external world?

Some philosophers point to Putnam (1981?).

Putnam, H. (1981). Brains in a Vat. In Reason, Truth, and History (Vol. 1, pp. 1–21). Cambridge University Press.

But is there an earlier source?

From someone else?

#epistemology #philosophyOfMind #historyOfPhilosophy #PhilosophyChatter #xPhiChatter