Plans can account for many possibilities on paper without controlling what happens when an operation begins. The enemy gets a vote and may not choose the reaction a planner considers sensible. Intelligence can miss capabilities, while the opponent's own errors or apparently irrational decisions can redirect the conflict. Planning remains necessary, but no amount of preparation converts another actor's agency into certainty. That agency is the practical reason historical forecasting cannot become a guaranteed war plan.
Notable Point · 35:32-37:16
The enemy gets a vote in every war plan
A plan that covers every possibility on paper can still fail because the enemy has hidden capabilities, different aims, and freedom to act irrationally.