We have spell checkers built into nearly everything we ever use to enter information via a keyboard. Normally, inaccurate input equals bad results. Remember the phrase from a childhood game of Monopoly, “Bank error in your favor – Collect $200″? This recent purchase at our grocery store must have been the result of a clerk entering the wrong unit price. (I doubt that 4 cents per pound is what they had in mind). We had pork barbecue for days – all for 17 cents!