I missed the episode. I've always enjoyed 20/20 but I have not watched it in quite some time now.

I do agree with the idea that in America we have too many fears about stuff that just ain't gonna happen.

In any case, whether or not a bike helmet will do what it's supposed to do, I can tell you that if I hit my head with a big rock and I'm not wearing the helmet it hurts more than if I am wearing it, so in the interest of pain, I'll keep wearing it. It's also a handy place to put more blinking lights.