The Army’s challenge is akin to writing instructions for a friend to play chess on your behalf. You know a lot about the rules of the game, and you may know a lot about your friend and the opponent. But if you try to write move-by-move instructions you’ll fail. You can’t possibly foresee more than a few moves. The first time the opponent makes a surprise move, your friend will have to throw out your carefully designed plans and rely on her instincts.