“I notice that if you have the door to your office closed, you get more work done today and tomorrow, and you are more productive than most. But 10 years later somehow you don’t quite know what problems are worth working on… He who works with the door open gets all kinds of interruptions, but he also occasionally gets clues as to what the world is and what might be important. … [T]here is a pretty good correlation between those who work with the doors open and those who ultimately do important things, although people who work with doors closed often work harder.”
