Under our World City Bike program we have for several years now been looking at the yes/no sudden-death helmet issue in the context of public bike projects . If you click here you will find several postings that make an effort to report in a balanced manner (to the extent possible) on the issues, trade-offs and implications of creating legal requirements that force all cyclists to use helmets. An absolutely well-intentioned position which has turned out to be no less than the cold hand of death strangling nascent public bicycle projects in various projects around the world. Pity to spend all that public money on a nice bike sharing system and then find that they are not being widely used while honest citizens add pounds of fat to what should be their lithe frames. In the event, here are a handful of short videos from YouTube that take a pretty good whack at it from several perspectives. Have a look and decide for yourself.