This all seems largely irrelevant unless people are actually arguing for helmets to be made compulsory on bikes?
If nobody is in favour, then why are we arguing about it – if you do wear a helmet, fine. If you don’t – well it’s your lookout. (speaking as an avid helmet wearer).
I’ve only had one accident which was a ‘helmet splitter’ – over the bonnet and up the roof of a car, then headfirst into the deck – and I’ve no desire to repeat the experience for the sake of a scientific enquiry into whether the lack of a helmet would have left me with severe head injuries (which is my suspicion, but can’t be proved after the fact). Of course, if TJ or someone else is willing to put their bare head on the line in order to advance human enlightenment and dispell the clouds of superstition, I’d be happy to supply them with the relevant details.