F and J aren't the most important letters in the alphabet, but they might be the most important ones on the keyboard. | Tim Graham/Getty Images The almost unnoticeable raised dashes on those two keys ...
When Bill Buxton worked at Xerox’s Palo Alto Research Center in the early 1990s, he examined the classic children’s homemade telephones: two cups connected by a taut string. He wondered why that same ...
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