You probably realize this but I just want to note that helmets and skulls have very different failure modes (by design in helmet's case) and just because your helmet split into pieces doesn't necessarily mean your skull would have as well.
Indeed, I can't find the link to the video where they show many different brands of cycle helmet splitting into pieces when heading a football (soccer) dropped from a certain height (which causes no injury for someone heading it without wearing a helmet).
(Pro-choice and anti-compulsion on the helmet issue. I choose not to wear one. I cycle 5,000 miles a year - 10,000 miles in a good year - cycle commuting in London, UK and leisure riding or touring.)
Probably, but as I was knocked out by my head hitting the post as I skidded along the ground still attached to my bike I hate to think what would have happened if I wasn't wearing a helmet. It's not exactly an experiment I want to re-run.
