Quite. That way I was able to figure out how many students graduated from Washington International School that year. For that matter, my wife taught a class on

Quite. That way I was able to figure out how many students graduated from Washington International School that year. For that matter, my wife taught a class one year at a local university. The class had 29 students, or at least 29 who bothered to fill out the evaluation, and the evaluation had a couple of places right of the decimal point. I found myself going reckoning, "hmm, 27 of 29 though that ...".