Putnam on BIVs and radical skepticism

The aim of this paper is to explore Putnam’s influential ‘BIV’ argument against radical scepticism, both as he presents this argument and as it has subsequently been reconstructed. §1 explores the BIV argument as Putnam presents it and the anti-sceptical morals that he extracts from this argument. §2 examines a core critique of the argument, so conceived, from Anthony Brueckner. §3 then critically evaluates an influential reconstruction of Putnam’s argument, due to Crispin Wright. §4-5 explores the idea that Putnam’s argument is best thought of as a transcendental response to radical scepticism, and accordingly applies Stroud’s challenge to transcendental arguments to this proposal. Finally, §6 examines an influential criticism of Putnam’s argument which is due to Nagel.