How is it that I never find the time to blog? My answer would be that I simply do not have the time. But of course I have the same hours in a day as my co-bloggers. I could argue that I have more demands on my time, but I know very well that we are all busy. Scarcity, a book by Sendhil Mullainathan and Eldar Shafir, has many lessons for busy people, including those of us who are busy thinking about the difficulties faced by people who have a scarcity of income or disposable income after debt.