lessdazed comments on The Aliens have Landed! - Less Wrong

33 Post author: TimFreeman 19 May 2011 05:09PM

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Comment author: Wei_Dai 19 May 2011 06:26:39PM 40 points [-]

Is there a standard name for the logical fallacy where you attempt a reductio ad absurdum but fail to notice that you're deriving the absurdity from more than one assumption? Why conclude that it's the caring about far-away strangers that is crazy, as opposed to the decision algorithm that says you should give in to extortions like this?

Comment author: lessdazed 19 May 2011 11:33:03PM 0 points [-]

Is there a standard name for the logical fallacy

Hidden assumptions play a role similar to the auxiliary hypotheses which undermine naive Popperianism. The fallacy of ignoring auxiliary assumptions seems like a special case of the fallacy of presenting an argument from ignorance.