It was a mistake. A naval engineer named Richard Jones was trying to make a large meter that would monitor electrical power on naval ships. As he was working with some tension springs, one of them fell to the ground. It bounced weirdly, first on this end and then on the other, almost as if it was trying to walk. It was a mistake; but as a result, the Slinky was born. It was a mistake. Ruth Wakefield was mixing a batch of cookies when she discovered she was out of baker’s chocolate. As a replacement, she broke sweetened chocolate into pieces and added them to the cookie dough. She thought the chocolate would melt and she would soon be snacking on chocolate cookies; but instead, the pieces remained whole. It was a mistake; but as a result, the chocolate chip cookie was born. It was a mistake. An engineer