And they might have not. You don't know either way, so stop making these nonsensical, generic statements
The original discussion was regarding the safety of bridges in America versus the bridges in Europe. Previously, you provided us with your usual statement of, "this would never happen in Europe", just like you did the day of the Virginia Tech shooting. One way to discredit your statements is to discredit you. You don't know the dynamics of bridges, you don't know anything about bridge resonance, you don't personally know the politicians and engineers in Europe, you don't know the conditions of most of the bridges in Europe. For you, personally, to draw conclusions from one event and apply it to a broad case study is what you call being an idiot. I suggest you stop doing that, but this sort of argumentative technique is essentially all you have in your discussion arsenal, as seen from the topics regarding religion and school safety.
You are already in the wrong once with, "that would never happen in Europe," and you'll probably be wrong again.
But anyway, I wasn't really being serious with the physics verbiage. I was more or less making fun of you.