Toby_Ord comments on Contrarianism and reference class forecasting - Less Wrong

26 Post author: taw 25 November 2009 07:41PM

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Comment author: Toby_Ord 26 November 2009 05:20:57PM *  6 points [-]

Everybody knows blue/green are correct categories, while grue/bleen are not.

Philosophers invented grue/bleen in order to be obviously incorrect categories, yet difficult to formally separate from the intuitively correct ones. There are of course less obvious cases, but the elucidation of the problem required them to come up with a particularly clear example.