Originally Posted by
crhilton
I'm sorry, it's basic physics.
I'm sorry. That's way too simplistic. Yes there are people doing lots of crash-test modelling and also simulations. The results of many of these studies show that rotational injuries from helmets are serious and that helmets do little to mitigate the most serious injuries. Given your ready dismissal of empirical evidence with no serious attempt to justify your stance I'll point you Google with the keywords: "biomechanical impact head injury helmet". You might like the 2005 IUTAM symposium on the subject and also be interested in the Bicycle Helmet Research Foundation commentary from 2007
http://cyclehelmets.org/mf.html?1182
Given that you've stated that you're just going to believe what you believe without much prior knowledge I suspect the above will be of little value to you though.