One of the impediments to instituting sortitional selection is, I believe, the *dispassionate* nature of the proposal.  It is such a rational and egalitarian idea that I don’t see it igniting the fire of emotional conviction that seems to accompany major social change.

Ètienne Chouard’s lecture “Sortition as a sustainable protection against oligarchy” changes my opinion about that.  See http://www.youtube.com/watch?v=KsnNpcJtwoo