The spread is a debating tactic where you present a set of supporting arguments so wide and particular your opponents are unable to rebut them all because 1) they have day jobs and 2) they have limited space or time to address them in any particular forum. A champion spreader is Noam Chomsky, who selectively recites facts of world history from Indonesia, Russia, to El Salvadore and 200 places in between, which no one but a professional in Comparative Economic Systems would be familiar with (indeed, comparative economic systems was a flourishing economic subdiscipline precisely because it couldn't be easily refuted because those communist countries didn't have a free press and made up their production data, but after 1989 it was obvious this field was simple wishful thinking dominated by deluded Marxists-note:of the ones I knew!).
http://falkenblog.blogspot.com/2012/09/economists-love-sprea...