It's 40-below, so you have to collect ice and then melt it. Then you have to hurry the heck up before your face freezes. And if you sprain your ankle during your time in the north country? You have a lot of time to think about a better way to shave your face.
That's how retired U.S. Army Lieutenant Colonel Jacob Schick (yep, that Schick) came up with the idea for the electric razor.
Nevertheless, Schick sold more than 3,000 electric razors the first year. [...] By 1937 he had sold almost two million.