gwern comments on Inherited Improbabilities: Transferring the Burden of Proof - Less Wrong

30 Post author: komponisto 24 November 2010 03:40AM

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Comment author: gwern 28 November 2010 10:45:46PM 1 point [-]

One person's modus ponens is another's modus tollens.

I found a citation for this in Here is a hand to 'Dretske, Fred (1995), Naturalizing the Mind, Cambridge, Mass.: The MIT Press. ISBN 0-262-04149-9'. Let's give credit where credit is due; it's a truth worth remembering about logically valid arguments.

Comment author: RichardKennaway 29 November 2010 12:42:02AM *  1 point [-]

It's much older than that. A quick Google found a mention from 1973, but I would not be surprised to find it is at least a century older.