Why did Christopher Sholes, the inventor of the QWERTY keyboard move “er” next to each other on the keyboard? The key pairs are highest on the Bigram Frequency of usage and invalidates the key striker lockup theory. The reason is right before your eyes: https://www.quora.com/Why-was-the-QWERTY-keyboard-layout-invented-and-why-has-it-not-changed/answer/Brian-Roemmele?ch=2&share=00f4632c&srid=Pi3 …
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