why was the chainsaw invented?

Why was the chainsaw invented?
Rather than use a knife to widen the pelvic area by slicing through cartilage and bone to extricate a stuck baby, the two developed a chainsaw to make cutting easier. While this sounds ghastly, the doctors were actually trying to lessen the agony endured by women who needed their pelvic bone separated.
Full answer in: www.mentalfloss.com
More questions like: Why was the chainsaw invented?