I just received an email from D. J. about a fifteen year old post [1] which mentioned bad math books and tagentially about measuring oil. It was unusual in that D. J. not only read the post (and enjoyed it) but also mentioned an alternative way of measuring 5/6 cup of oil using a simpler method than the insane one I came up with at the time. D. J.'s method is to meausre out 4/3 cups and then removing ½ cup. I guess D. J. is better at fractions than I am.