As readers and writers, we’re intimately familiar with the dots, strokes and dashes that punctuate the written word. The comma, colon, semicolon and their siblings are integral parts of writing, pointing out grammatical structures and helping us transform letters into spoken words or mental images. We would be lost without them (or, at the very least, extremely confused), and yet the earliest readers and writers managed without it for thousands of years. What changed their minds?
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