I just read an article on The Atlantic online that explains why once we start eating potato chips we are unable to stop even when we know we should. Are potato chips just smarter than we are? Well sort of. The article explains how potato chips, with their fat, salt, and sugar are crafted so that we can and must eat a lot of them. We eat more than we should even when common sense tells us not to. It is probably best to leave potato chips alone then. But if you want to eat some, buy the smallest package you can. This way you can limit how much you eat without worrying about outsmarting the potato chip.