My bold above. To refute this last point, when you look at real world statistics, specifically those pertaining to before-and-after helmet compulsion in New South Wales and in Ontario, it genuinely appears that helmets don't, on average, help much if at all, maybe make the head injury rate a tiny bit worse if anything. I think we can quite readily accept that helmets do help some of the time, so given they don't seem to improve matters in the overall scheme of things it stands reason they must also make things worse on occasion.
If I turned your argument around I could assert they always make things worse because I am ignoring the times they actually help
I don;t know the figures that you are referring to
However, when I have seen figures for Australia - i.e. NSW and not Ontario - then when helmets were made compulsory then the numebr of people cycling dropped significantly
I would presume the same would happen in Ontario
If the number of people cycling drops so much then the numbers get messed up
In particular I saw a study that said that when the numbers dropped the number of people wearing helmet due to using them for more risky types of cycling became a higher percentage
another point is that the more people riding bikes then the more drivers become used to looking out for them - hence the old "sorry mate didn;t see you" rate drops
which again messes with the numbers
As you can see I have also not quoted specific studies or stats - no no specifics but that is what I remember seeing
as with everything - things are always more complicated than first seems