The reason a bunch of employees who had no direct responsibility for ads, or culpability when they were lousy, spent their weekends transforming someone else’s problem into a profitable solution speaks to the power of culture. Jeff and gang had a clear understanding of their company’s priorities, and knew they had the freedom to try to solve any big problem that stood in the way of success. If they had failed, no one would have chastised them in any way, and when they succeeded, no one—even on the ads team—was jealous of their progress.

