Not disagreeing with the bulk of your comment, but I'm sure if you're aware that 100 years ago was 1921. You know. The Roarin' 20's? Literally the decade that brought us automobiles, radio, and film? Huge economic growth with massive shifts in culture?

Not disagreeing with the bulk of your comment, but I'm sure if you're aware that 100 years ago was 1921. You know. The Roarin' 20's? Over a decade after the current blade outlet was patented.