We only talk about the third attack on Pearl Harbor
One has to wonder whether the Japanese would have thought up this strategy (or considered it feasible) had the Americans not practiced it and proved it for them.It seems worryingly common for this kind of simulation to ironically lead to disaster. Chernobyl would be another example (the explosion happened during a safety test). And it's possible that the coronavirus pandemic is another (the virus may have accidentally leaked from "gain of function" experiments designed to give us insight into how to respond should such a virus evolve naturally).