If you go back to what I actually said and compare it with what you said I said, you may see some very stark differences. Like: where did I ever claim that safety classes are effective for those who do not take them?

Here's a great example of you easily misunderstanding another simple quote:

Well, gosh, that's not what he was saying at all and you are, not surprisingly, misrepresenting his argument. If I were to paraphrase the post you quoted in your terms, it would be along the lines of: "Helmets are useless in collisions where they are useless, therefore they are useless in all collisions where they are useless." But of course you left out a critical qualifier in order to match what you wanted to argue rather than what was actually said.