army1987 comments on The Great Filter is early, or AI is hard - Less Wrong

19 Post author: Stuart_Armstrong 29 August 2014 04:17PM

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Comment author: James_Miller 29 August 2014 05:07:15PM 5 points [-]

It's also possible that AI used to be hard but no longer is because something in the universe recently changed. Although this seems extremely unlikely, The Fermi paradox implies that something very unlikely is indeed occurring.

Comment author: [deleted] 30 August 2014 03:38:56PM 3 points [-]

Not that unlikely, depending on what you mean by “recently”; for example, earlier stars had lower metallicity and hence were less likely to have rocky planets.