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|Pollock’s Gas Chamber||I 215f
Pollock's gas chamber/Poundstone: one can reject belief in more than one way - 1. the light looks green (without information about the color of the gas) - 2. Usually things have the color that they have on the screen, therefore there is color TV - Vs: the second is even weaker than the first - so there is even a third reason in addition to the sign next to the door - be right for the wrong reasons - refutation: a) rejecting: simply says that a belief is false - b) undermining: that belief is invalid - e.g. if you discover that you are a brain in a vat, which is an undermining truth over all beliefs about the world - N.B.: the belief could then still be true - undermining better than rejecting truth.
Prisoners Paradox/knowledge paradox: (unexpected execution) the set of beliefs generates its own undermining truth - so there are refutations of refutations.
Pollock's gas chamber: undermining Vs rejecting refutation.
I W. Poundstone Im Labyrinth des Denkens, Reinbek 1995