In reply to:
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I just think it's obvious (sorry) flying thru the air (20/ 30/ 50 feet in the air) bike/ rider weight/ speed ...... and then you miss ... which you will at sometime ...... the enertia generated when you "slam" into a jump face ... is going to cause "serious" injuries .... simple physics, really ....
Every injury (of any serious nature) with my family and friends have been from jumps .... ?????
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What about trees? They don't seem to move much when you hit them!
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There's a volicity difference ...... Yes, if you hit a tree at 80 miles an hour/ head on / certainly.. the same result will happen ...... but if someone can't see the difference between falling from, basically, 3 story's up on a motorcycle and then missing the landing ramp !!!!!!!!!!!!!!! VS running into a tree in 2 gear gear ????????????????? that was my only point ......

The people that I know that have been seriously hurt, have been hurt jumping. I don't profess to be an expert ... I'm just giving an observation. I'm not trying to say one is better than the other ... just my personal observation.

Good Luck .....