In a message of 10-12-1900, VERN FAULKNER wrote re: MCDONALDS KILLS MORE THAN
JT> I think part of the problem is that you seem to think
JT> bicycle helmets are intended as a panacea to end all
JT> head injuries.  They are not.
F>  No, everyone ELSE seems to think they're some miracle
VF> preventative [...]
So why are you ragging at me about it?
VF> Do you want to go into the physics of brain damage and
VF> deceleration? 300 m/s^2 is what the brain can handle in terms
VF> of deceleration before it gets damaged.
No problem there...  A helmet can (in many cases), by absorbing some of the 
energy of impact, reduce this acceleration to an acceptable level.  This, 
BTW, is why helmets are more effective with bicycles than motor vehicles, 
where the energies involved are considerably higher.
VF> Okay, you gonna pay my medical bills resulting from injury
VF> and lost productivity from using a helmet? Got a headache
VF> yesterday, until I got off-road, and took the helmet OFF. I got
VF> it again as soon as I hit the road [...]
Sounds to me like you need a different helmet.  Have somebody who knows what 
they're doing fit you for it.  As you say, a poorly fitting helmet is often 
no better than no helmet at all, if only because it doesn't get worn.
* KWQ/2 1.2i * Internet: John.Thompson@ibm.net
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