Easy there, Hoose meant no harm by that statement, that's beside the topic of this thread anyways.
And honestly, there isn't much "engineering" behind a ski jump. I'm an engineer... so I can speak to this. Yes, there are basic kinematics behind it, the angle at which you leave the jump, and the speed you are at will determine how high you go and how far you go - so where the landing "should go". HOWEVER, if you overshoot a jump, that means you were going too fast. In order to brake your back, you need to be going WAY too fast, and the only reason I can see someone going that fast and overshooting that much is if the jump was seriously built like crap, like huge ramp, landing 10 feet past it..... and in that case YOU SHOULD KNOW BETTER AS A SKIER TO GO OFF THAT JUMP.