“In virtually all areas of learning, you build better mastery when you use testing as a tool to identify and bring up your areas of weakness.” — Peter C. Brown Copy Share Image
No one would say, 'Hey, I think this medicine works, go ahead and use it.' We have testing, we go to the lab, we try it again, we have refinement. But you know what we do on the last mile?… — Sendhil Mullainathan Copy Share Image
