« If I had an hour to solve a problem and my life depended on the solution, I would spend the first 55 minutes determining the proper question to ask, for once I know the proper question, I could solve the problem in less than five minutes. »
« Strategy without data is like air guitar »
Tom Morton @ R/GA
Everything David Trott said in 2012 in his famous article « If planners planned »
And of course "The Magic of Doing One Thing at a Time", HBR.org.