"The researchers were looking for quintessential envy, which is distinct from jealousy. Envy involves a longing for what you don’t have, while jealousy is provoked by losing something to someone else. If you crave a wife like Angelina Jolie, you’re envious of Brad Pitt; if you’re upset about losing your wife to him, you’re jealous."
—Huh. So Iago and Rick Springfield: envious. Herzog and Ric Ocasek, jealous. And, as John Tierney reports, envy improves our focus and memory, but it makes our brains tired. Also, Brad Pitt was so good in Moneyball!
The point is probably moot: