My winter coat has these care instructions: Do not wash. Do not dry-clean. Do not spot clean. It limits the options, rather. When I was in fourth grade, my older sister asked our parents if she could join 4-H and get a sheep to take care of. I'm sure my parents were as excited about this request as I am when Mallory asks to take karate lessons, or to join a soccer team; the difference is, in this instance, my parents acquiesced. For some reason, it was decided that I, too, should join 4-H and get a sheep. And so it was that for about six months, Jana and I were shepherdesses, or at least, we had to wake up early each morning and feed these sheep, and break the ice on their trough, and we also had to muck out their stalls on the weekend, and we had to encourage them to "exercise" so that they, and we, could fetch a good price at the spring Stock Show. My sheep was of the Suffolk breed, reputed to be the most intelligent of the sheep breeds, so I named him Einstein. It also...