“When the shopping trolley was first invented, it was a complete failure - people were used to either carrying a basket around with them, or asking the grocer to fill their bag with their chosen items. The shoppers didn’t seem to want to try this new method, so the inventor, Sylvan Goldman, hired dummy shoppers to walk around his store with trolleys, and had an employee offering one to patrons as they entered - and yet it still took a long time to catch on!”