Sendhil Mullainathan Time Quotations

Busy people all make the same mistake: they assume they are short on time, which of course, they are. But time is not their only scarce resource. They are also short on bandwidth. By bandwidth I mean basic cognitive resources - psychologists call them working memory and executive control - that we use in nearly every activity.

If women's choices - such as taking time off to rear children - make them less productive in the economy, does adolescent boys' behavior in school make them even less so, because they are missing the educational potential of their formative years?

If you send out one coupon with a deadline of a week and another that must be used within the next month, you end up having more redemptions with the one week deadline. It's really amazing. With the month deadline you have four times as much time, but people tend to say they'll use it in a few weeks' time and then they don't do it.

Task switching is hard because we do not control what is on our mind. Despite our efforts, the original task continues to occupy our mental bandwidth. Although we can control where our time goes, we cannot fully control how our bandwidth is allocated.

Time can be dissected easily: an hour can be cut up in many ways. Fifteen minutes on this memo, a five-minute walk to another meeting, 30 minutes at that meeting and then 10 minutes debriefing. Oh, and maybe a quick phone call on the walk to that meeting. The busy are expert at dissection: that's how they make it all fit.

For somebody for whom they're going to buy a certain amount of gas irrespective of the price, should they really spend so much time thinking about the price of gas? It doesn't affect anything they do.