The chainsaw was originally invented to help women give birth. Childbirth is always painful, but it used to be a lot worse. Especially if, for example, the baby wouldn’t fit through the mother’s opening. If the baby was too large, or turned the wrong way, the opening had to be widened. This involved cutting away bone and cartilage, and lots of pain. The medical tools of the time were knives, saws, chisels, and mallets.