It might take three minutes of your time.
I know some of you don't bother to look when it's "just" a video or a link and I am not telling you about my fabulous dinner. I don't think I ever talk about my fabulous dinner. Maybe once for that delicious grilled cheese and tomato soup, but ... This will delight and educate you. Really. Can't we all use a few more pleasure points and working brain cells?
When you get to the bottom, there are several more in the series.
http://kalman.blogs.nytimes.com/2009/07/30/can-do/?em