Back on June 19th I presented Cumulative Innovation, Sampling and the Hold-up Problem (pdf) (xml src version) at the 2006 DRUID conference on Knowledge, Innovation and Competitiveness. If you want to get a sense of paper without reading the whole thing there is a set of summary slides.
Cumulative Innovation, Sampling and the Hold-up Problem: Paper Presented at DRUID 2006
JULY 3, 2006