David Martin said:
...It is often assumed by the ex-medical students, that becasue you were
wearing a helmet it must have done some good and couldn't have hurt.
Given the large number of MHSML stories, one must presume that somewhere
there is the statistics equivalent of dark matter, tens, if not hundreds
of people having injuries to their head to balance out the statistics so
the population figures match what is actually seen.
Noone ever posts[1] saying 'My helmet made my HI worse', so why are the
stats for whole populations not showing this surely significant effect
on the severity of HI?
...d
Yes, yes, yes! Great analogy David.
For those not au fait with what David is on about, there is, in the subject in astrophysics, discussion about the search for the "missing mass" - there must be some dark matter "out there" that's not able to been captured by telescopes. The Science writer John Gribbin is one of many writers who have written popular science books on this - "The Omega Point: the search for the missing mass and the ultimate fate of the universe" (Gribbin,1987).
So, with the advent of greater helmet wearing, and taking into account the-never-ceasing-to-amaze human capacity for credulity, there seems to be a case of untold "lives saved" and head-injury-hospitalisations-prevented all down to helmets. Problem is the data can't be found that is able to support these credulous claims.
Just saw a quote today: In the 17th century Francis Bacon, tired of hearing the arguments from armchair philosophers about how many teeth a horse had, said "why don't you stop arguing about it and go out and count them instead" (the quote isn't verbatim of course - found in Michael Gazzaniga's book Natures Mind (1992?)
We hear endless stories - testimonials - of how the helmet spared me of/from [___whatever - left up to your imagination and credulity to fill in] - but stories are only stories - what people believe isn't what is actually the case. People seem to dislike and badmouth the evidence of statistics when they present a picture that doesn't agree with their preconceptions and prejudices. If people want to engage in believing all sorts of wonderful things - great, feel free to do so - but let's keep beliefs out of public policy.
Roger