We have all encountered them. They are those strange product labels and warning stickers that it seems should be totally unnecessary. I think I've referred to them once before. Do we need to be told for instance that shampoo is for external use only? It would also seem apparent that when attempting to start a chainsaw it is patently unwise to grab the business end of said saw, and yet apparently some machines are affixed with a label that warns against that very practice. It has been suggested that if there is a printed warning against it, that label only proves someone has done exactly what it cautions against. I’m not so sure about that.