Think Like a Rocket Scientist: Simple Strategies You Can Use to Make Giant Leaps in Work and Life

by Ozan Varol

The monkey-first attitude requires developing a set of “kill metrics,” as X calls them, a set of go/no-go criteria for determining when to press ahead and when to quit.88 The criteria must be defined at the outset—when you’re relatively clearheaded—before your emotional and financial investments might trigger the sunk-cost fallacy and cloud your judgment.