Wikipedia was under siege recently from a right-wing campaign focused on its article about recessions. Isn’t it convenient, these critics said, that the online encyclopedia doesn’t clearly define a recession as two quarters of negative growth? Wikipedia must be taking its orders from the Biden administration, they claimed, which insists that though the U.S. economy has had two negative quarters, it is not in a recession because of other, more positive economic indicators, including low unemployment. The truth was that the Wikipedia article had always reflected different definitions of a recession — some, like the one Britain uses, based solely on two quarters of negative growth; others, like the United States’ preferred definition, based on economists’ assessment of a variety of factors. That didn’t stop angry readers from trying to rewrite the article.