This kind of research is interesting (for sciences sake), but I think it is important to bring up the fact that no-one is saying wearing a helmet doesn't help i

This kind of research is interesting (for sciences sake), but I think it is important to bring up the fact that no-one is saying wearing a helmet doesn't help in situations where life altering head injuries would otherwise occur. It is probably fair to say that in the severe head injury probability distribution, it removes a bunch of probability from the "severe/dead" part of the curve, and adds a bunch to the "minor/tweak" part of the curve, which I'm ok with.