[killjoy]

As for anti helmet propaganda, no, I have not seen it. I have seen a lot of anecdotal evidence regarding situations in which helmets have or could have caused damage exceeding that which would have been caused (allowed?) by the absence of a helmet.

This is a very simple argument as far as I am concerned. Helmet use is mandatory in motorcycle racing. Guys involved with racing take multiple falls on a yearly basis so they are a perfect test sample.

If helmets cause the types of injury (neck hyperextension) that you are suggesting, it would have shown up in racing accents. I know of no racers who have suffered this type of injury. Do you?

[Smokin' Joe]

You are comparing apples to oranges. Look at a racecourse then look at a city intersection, and look with a critical eye toward uneven surfaces, projections and protrusions into the space where a rider might be thrown. Big, big difference.

Your analogy is like saying because there have been no car/semi accidents at Indy, there should be none in the real world.