I wasn't speaking of your reply being hasty, I was speaking of mine. I also has some evidence to the 'fender bender" vs. the football tackle. I work in the ED and have seen plenty of minor fender benders (about 5 a day) and they all vary in amount of pain inflected. But, when they do it is quite severe. I have seen plenty of football inj. and hits as well and they keep on playing. You simply cannot generate the same amout of force from a 300lb man going maybe 7mph vs a 1500lb car going 25mph. Simple physics man.