What concept did Putnam challenge in his critique of the "brain in a vat" thought experiment?
Epistemological Skepticism
Philosophical Determinism
Ethical Altruism
Ontological Naturalism
Answer
Epistemological skepticism is the belief that we cannot know anything for certain. Hilary Putnam challenged this concept in his critique of the "brain in a vat" thought experiment. He argued that even if we are brains in a vat, we can still know that we are brains in a vat.
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