Some years ago, shortly after I got my first Internet account, I signed up to an online discussion group on African-American affairs. It was the opening up of a whole new world. Every morning, first thing, I’d log on and read through the 25 or so e-mails that had already been posted from back east and the midwest. If one or two of them seemed particularly provocative and ripe for reply, I’d think it over while eating breakfast. By the time I got back to the computer a half hour later or so, the west coast had joined in, and another 25 or so messages had been posted to the discussion list, many of them in response to the one or two that had caught my own attention.
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