I needed to purchase a small storage bin to hold my loose assortment of biking paraphernalia. Since most of the stuff is small–patches, wrenches, portable lights, and the like–the only potentially problematic piece was my portable bike pump. Whatever box I bought would have to be able to hold this long, thin cylinder.
I briefly considered planning ahead by taking some measurements before my trip to Target. “It isn’t necessary,” I thought to myself. “I’m very familiar with the Pythagorean Theorem. I should easily be able to identify and purchase a prism whose longest diagonal more than meets my needs.”
So now I must live with a un-closeable box until I feel I have learned my lesson.