Geoff Nunberg

"There goes the neighborhood." Every so often that cry goes up in San Francisco, announcing a new chapter in American cultural history, as the rest of the country looks on. There were the beats in North Beach, then the hippies in the Haight, then the gays in the Castro. Now it's the turn of the techies who are pouring into my own Mission neighborhood, among other places. Only this time around, the green stuff that's perfuming the air is money, not weed.

When I took the SATs a very long time ago, it didn't occur to us to cram for the vocabulary questions. Back then, the A in SAT still stood for "aptitude," and most people accepted the wholesome fiction that the tests were measures of raw ability that you couldn't prepare for — "like sticking a dipstick into your brain," one College Board researcher said.

Even taken together, the charges didn't seem to amount to that big a deal — just a matter of quoting a few factual statements and a Wikipedia passage without attributing them. But as Rand Paul discovered, the word "plagiarism" can still rouse people to steaming indignation. Samuel Johnson called plagiarism the most reproachful of literary crimes, and the word itself began as the name of a real crime. In Roman law, a plagiarius was someone who abducted a child or a slave — it's from "plaga," the Latin word for a net or a snare.

Evidently it was quite fortuitous. Just a couple of days after MTV's Video Music Awards, Oxford Dictionaries Online released its quarterly list of the new words it was adding. To the delight of the media, there was "twerk" at the top, which gave them still another occasion to link a story to Miley Cyrus' energetic high jinks.