We're a bit late today, so let's let this question go for a day and a half. Let's say your train piggy bank is full and you open it to find you have more cash in it than you thought. You have enough to buy that really slick, highly detailed steam engine you've been drooling over, but not so quick. You could instead buy a couple of really nice engines for the same amount, or even quite a few reasonably decent engines and some other stuff and still have enough left over for an ice cream cone. What a dilemma. The question: If you could buy one really good engine, or two nice engines, or four reasonably decent engines or possibly even six engines that were at least acceptable, and do only one of these things with the money from your piggy bank, which would you choose? Extra credit if you tell us why you would make that choice.