My mother went through a "scarring" episode when I was much younger, back in the days of the "safety razor." Safety was all about the razor, not the double-edged blade. There was nothing safe about the blade that went into the razor until it was actually in the razor. It was a double-edged scalpel you held on the flat, between thumb and index finger, when loading and unloading the razor. There were no other uses for this micro-thin blade other than to shave with it, perform surgery, or cut someone's throat. Committing murder would probably result in your fingers getting sliced up worse than the victim.
We all suffer scars of one kind or another. To read more of this post, please follow the attached link: The Scars We Wear