"Just zis Guy, you know?" writes:

On Thu, 27 Jan 2005 02:15:20 GMT, (Bill Z.)
wrote in message :

Err, Benjamin, the discussion is about helmets and biases you get in
statistics regarding the comparison of different groups of cyclists.

On which subject I recommend the 1989 Seattle study, a very good
example of these biases in action.

You recommend that one? Good for you.

--
My real name backwards: nemuaZ lliB