Searching for technological and organizational innovations is a fundamental activity in social systems. Recent work in this area has focused on the notion of firms locally searching for high points on a “fitness landscape.” Here we show how the presence of neutral networks forming pathways of temporarily inconsequential changes can alter the potential of innovation in such worlds. In particular...

n engl j med 368;12 nejm.org march 21, 2013 1073 be shot down and far more would crash because the Nigerian government’s shoot-to-kill order forced them to fly at night. The brazen targeting of Red Cross relief flights on civilian humanitarian missions was hard to imagine. In the minds of some people, however, these attacks were justified by another clear violation of humanitarian neutrality: o...