in message <[email hidden]>, Just zis Guy,
you know? (') said:It failed? Shocking. Still, that's PFDBs for you - first little bang
and they fall apart. You do know the difference between the behaviour
of polystyrene foam in plastic deformation and brittle failure modes,
of course?
Mind you, the helmet wearers among us do seem to suffer more than
their fair share of contratemps...
Consider this graph: <URL:http://www.cyclehelmets.org/jpg/index_11.jpg>
Yes, I know you've all seen it before. No, I don't know (and would
really like to know) the source of the figures. The important
confounding variable here is of course the proportion of trips taken by
bicycle: there is evidently a very strong negative correlation between
the proportion of trips taken by bicycle and the proportion of cyclists
wearing helmets.
We kind of assume that the smaller number of fatalities is a consequence
of the higher proportion of trips, and that the lower proportion of
helmet wearing is just a coincidence. But I'm not sure if that's an
assumption you should bet your life on.
What is a fact, and unquestionable, is that, over Europe as a whole,
cyclists who don't wear helmets are less likely to be killed or injured
than cyclists who do; and that's a thought worth thinking about.
--
[email hidden] (Simon Brooke) http://www.jasmine.org.uk/~simon/
;; how did we conclude that a [censored] cartoon mouse is deserving
;; of 90+ years of protection, but a cure for cancer, only 14?
-- user 'Tackhead', in /. discussion of copyright law, 22/05/02