Some of the best creations apparently were oopsies. In Saratoga, N.Y., in 1853, a persnickety diner complained that a lodge’s French-fried potatoes were too thick and mushy. The chef’s solution was to thinly slice and deep-fry some potatoes. And that’s how George Crum invented potato chips. In the early 1990s, Pfizer scientists developed a medication to treat hypertension and angina. That was ...