Tom Peters:

The deal is this—and I am drawn to it because it mirrors exactly my own half-century journey and rant: Namely “planners,” especially “master planners,” more or less believe that the plan is the thing—and that the messy process of implementation on the ground will take care of itself if The Plan is “right.” (Reminiscent of Iraq, eh?) In The White Man’s Burden, Easterly describes “planners” and “searchers.” While planners treat the plan as holy writ, searchers live by rapid trial and error and learn through constant experimentation and adjustment. To wit:
“In foreign aid, Planners announce good intentions but don’t motivate anyone to carry them out; Searchers find things that work and get some reward. Planners raise expectations but take no responsibility for meeting them; Searchers accept responsibility for their actions. Planners determine what to supply; Searchers find out what is in demand. Planners apply global blueprints; Searchers adapt to local conditions. Planners at the top lack knowledge of the bottom; Searchers find out what the reality is at the bottom. … A Planner thinks he already knows the answers; he thinks of poverty as a technical engineering problem that his answers will solve. A Searcher admits he doesn’t know the answers in advance; he believes that poverty is a complicated tangle of political, social, historical, institutional and technological factors; a Searcher hopes to find answers to individual problems only by trial and error experimentation. A Planner believes outsiders know enough to impose solutions; a Searcher believes only insiders have enough knowledge to find solutions, and that most solutions must be homegrown.”