pjeby comments on Necessary, But Not Sufficient - Less Wrong

44 Post author: pjeby 23 March 2010 05:11PM

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Comment author: pjeby 23 March 2010 09:33:36PM 1 point [-]

Oversimplification has it's uses.

Note that necessary-but-not-sufficient doesn't rule out oversimplification. You don't need to know about every necessary condition to solve a problem, only about the ones that are deficient in the current instance.

You just can't generalize from such a solution, if the evidence supports the idea that there may be other necessary conditions that are deficient in other cases.

Comment author: saliency 24 March 2010 02:08:57PM 1 point [-]

"only about the ones that are deficient in the current instance."

How do you know what is deficient A priori? Investigation / diagnosis takes resources and have an opportunity cost.