I remember hearing a story (maybe apocryphal) that after Larry and Sergey abandoned their "no managers" experiment, they decided to give each manager a minimum

I remember hearing a story (maybe apocryphal) that after Larry and Sergey abandoned their "no managers" experiment, they decided to give each manager a minimum of 10 direct reports and preferably closer to 20 so that the manager wouldn't have time to micromanage any of them.