The last time I was in a secondhand store a book caught my eye—How to cut your own or anybody else’s hair. It was on sale for $2. I did some speedy math. If haircuts cost $55 each, and if I could avoid paying that sum six times every year…I could save $6,600 over the next 20 years. I bought the book and brought it home, and it sat here, untouched, for four years. Until tonight. Tonight I was bored. Ukulele practice had been cancelled and I had nothing pressing to do.