That's what Atlantic tech blogger Alexis Madrigal calls Google's Books Ngram Viewer. Google has scanned about 10 percent of all the books ever published. Enter any word or phrase into the search box, and the viewer returns a graph of its frequency of appearance in books published over the last two centuries. Note that the searches are case sensitive, and you can compare the relative frequencies of up to four five different words or phrases, separating them by commas in the search box. Say, "Nova Scotia" and "Ontario," for example: Try it yourself, and please send me any interesting pairings you come up with. Madrigal's...

Do not miss Jeffrey Goldberg's continuing posts about his surprise command audience with Fidel Castro last week. First instalment here; second here. Goldberg is a perplexing figure, a former member of the IDF, quick to call anti-semitism against anyone who balks at his lockstep advocacy of troubling Israeli policies. He caused a stir recently with an Atlantic cover story speculating about an impending Israeli nuclear strike against Iran. Many regarded the article as thinly disguised tub-thumping for such an attack (see here and here), while others demurred. In the end, the Atlantic held an extensive, online print debate about the issue — which...