It's like, the front door of the office is like a Cuisinart, and you walk in, and your day is shredded to bits because you have 15 minutes here, 30 minutes there, and something else happens, you're pulled off your work, then you have 20 minutes, then it's lunch, then you have something else to do.

Very, very few people actually have long stretches of uninterrupted time at an office.

You cannot ask somebody to be creative in 15 minutes and really think about a problem. You might have a quick idea, but to be in deep thought about a problem and really consider a problem carefully, you need long stretches of uninterrupted time.

Jason Fried Quotes