Hat tip to Brent Swearingen, who forwarded this link to me. The basic argument is that innovation occurs not because of one person with a grand idea but by way of lots of "small bets" made over time. Drucker talks about the "pilot project" approach to innovation. Probably similar concepts.
http://keithsawyer.wordpress.com/2011/05/18/the-emerging-consensus-view-of-innovation/