I checked CBs profile to see if I could find a by-line for his newspaper columns. No such luck. I did find this,

http://bicyclesafe.com/helmets.html

and I have to say there is much to agree with in this article.

Helmets are not a substitute for riding safely, and should not be treated as such.

The "wear this and you'll be fine" attitude will mean nothing if you're run down by a 3,000-6,000lb. car.