How To Win a Trade War: An Optimistic Guide to an Anxious Global Economy, by Soumaya Keynes and Chad Bown, Simon & Schuster, 288 pages, $30
The ancient Chinese military strategist Sun Tzu advised that "he who wishes to fight must first count the cost." Joshua, the brilliant (for its time) computer in the 1983 film WarGames, did the counting and concluded that "the only winning move is not to play."