Many people know that Columbus wouldn't have dared to sail across the Atlantic if he had been aware how far the way to Asia really is. But there exist a lot more errors which turned out to be useful. Great thinkers like Copernicus and Einstein, but also ordinary people made mistakes which changed our world in many ways. A collection of the most interesting and useful errors in history, science, kitchen and Errors – always negative?To err as a program? Trial and error What geniuses and rainworms have in commonMistakes? How delicious! – Potato crisps and cauliflowerThe great fried potatoes failureTofu, cheese, wine & Co.Cauliflower and beyondIn wine there is errorCopernicus a rounder rounding… and KeplerDiscovering America with AristotleEl the mirage of greedDreams, lies and SchliemannCreative misunderstandings in literatureKandinsky The right wrong viewOnly relatively right theory of relativityUnsuccessful, but still a the Michelson–Morley experimentA bit of theory on errorSloppiness saves the lives of millionsCan false prophecies be useful?Derek Miller has worked as a newspaper journalist on topics in science, culture and politics.