Economist's Viewがこちらのブログ経由でElizabeth Green*1のNYTマガジン記事の以下の一節を孫引きしている。 One of the most vivid arithmetic failings displayed by Americans occurred in the early 1980s, when the A&W restaurant chain released a new hamburger to rival the McDonald’s Quarter Pounder. With a third-pound of beef, the A&W burger had more meat than the Quarter Pounder; in taste tests, customers preferred A&W’s burger. And it