I wonder how far back that goes. Typewriter days? Pre-GUI?
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Most of typewriters were used for commerce then. You can see a lot of ready-made vulgar fractions, commercial @ sign, a cent key, and so on.
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Slash was likely much more useful in commerce than a question mark. Why? You’d use it to create all kinds of fractions. Many prices and wages back then were still parts of a dollar, rather than multiples of dollar.
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A really fascinating thread by
@mwichary positing his theory of why the / and the ? share a key.https://twitter.com/mwichary/status/1037571634998038528 …
Thanks. Twitter will use this to make your timeline better. UndoUndo
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