“As a team gets bigger, the number of links that need to be managed among members goes up at an accelerating, almost exponential rate.” In his handbook Leading Teams, Hackman reminds us of “Brook’s Law”: the adage that adding staff to speed up a behind-schedule project “has no better chance of working … than would a scheme to produce a baby quickly by assigning nine women to be pregnant for one month each … adding manpower to a late software project makes it later.”