juked07 comments on Anthropic signature: strange anti-correlations - Less Wrong

51 Post author: Stuart_Armstrong 21 October 2014 04:59PM

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Comment author: juked07 22 October 2014 10:12:04AM *  0 points [-]

Should the first blurb begin "Imagine that civilization would definitely be destroyed by" instead of "Imagine that the only way that civilization could be destroyed was by"? That's what it seems like to me based on the second blurb.

Comment author: Stuart_Armstrong 22 October 2014 12:10:34PM 2 points [-]

It's easier to reason with a single cause of destruction: see http://lesswrong.com/lw/hw8/caught_in_the_glare_of_two_anthropic_shadows/

Comment author: juked07 23 October 2014 01:11:50AM 0 points [-]

Then maybe "Imagine that civilization would definitely be destroyed iff there was a..."?

The rest of the post still reads to me as if pandemic + recession is sufficient, not just necessary, for implying extinction. To be explicit, it sounds like you have ruled out the possibility of observing pandemic + recession + non-extinction, I would have thought you'd want to say that pandemic + recession = extinction, rather than the weaker statement that extinction requires pandemic + recession.

Comment author: Stuart_Armstrong 23 October 2014 09:15:43AM 0 points [-]

Go with iff for that example.