In Winston Churchill's" History of the English Speaking Peoples" he describes the English just before William of Normandy arrived to decimate them. They knew he was coming, and their army were ready and had been called out a few times in false alerts. They didn't know he was being held up waiting in his ships for weeks and weeks because of unfavorable winds. Finally they sent their armies back. The wind changed. He came.
Winston said something like this: In true English style, they concluded that the danger was past because it had not arrived yet.
We don't want to do that. It will come.