Nornagest 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: Nornagest 19 May 2011 06:35:01PM 5 points [-]

I'm not sure words like "crazy" and "absurd" are even meaningful in this context. It's pretty easy to come up with internally consistent arguments generating both results, and the scenario's outlandish enough that it's not clear which one has more practical vulnerabilities; essentially we're dealing with dueling intuitions.