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by gkya 3580 days ago
TL;DR: The typewriter has 2,500 distinct characters, and in order to increase typing speed, characters that are related meaning-wise are placed together.

As an aside, typewriters are very interesting piece of tech, if you look under the hood. I have one that I use regularly, and it's quite pleasing to use (I've an Olympia Traveller de Luxe).