Here it is again, that "uncivilized" graphical representation of seven different studies of bicycle helmet effectiveness in preventing head injuries, all of which show SIGNIFICANT protection:



Yes, posting that is "uncivilized" and prevents discussion.

All because I'm "stupid" for daring to say that studies on DIFFERENT SUBJECTS like helmet ventilation or prevention of PEDESTRIAN injures that say things like "helmets MAY prevent injury" don't refute the multiple studies directly investigating bike helmet injury prevention presented in that graph.