/tan'stah-fl/ [acronym, from Robert Heinlein's classic `The Moon is a Harsh Mistress'.] "There Ain't No Such Thing As A Free Lunch", often invoked when someone is balking at an ugly design requirement or the prospect of using an unpleasantly heavyweight technique. "What? Don't tell me I have to implement a database back end to get my address book program to work!" "Well, TANSTAAFL you know." This phrase owes some of its popularity to the high concentration of science-fiction fans and political libertarians in hackerdom (see Appendix B).