Personal limits, experience, knowledge and talent.
There will always be some very few, who do, and will do the pionering work others fancy and think is cool. This is most of the time very talented jumpers. I know there have been done jumps, I know I would never do, have the nerve, or have talent to do. Right now there is proximity flying most jumpers want to do, and it seems they cant wait to get the time in sport, experience, and knowledge fast enough before they try. I have seen many videos on youtube where I know the jumper have alot of skydiving, basejumping and time in sport trying to fly lines in the mountains. It is scary shit to se them flopping around, on staal point, and beraly surviving every jump. I have also seen young talents, shaving the ledges in high speed, almost with no skydiving or base experience, just got the wingsuit in hand and start jumping. Both of them we can agree are dangerous to them selves. What can we do to prevent accidents? The local poeple is the ones who is left behind every time a accident happens. Majority of the jumpers is visitors, and leaves the spot right after, and that is something you all should consider every time you visit a jumping area. Kjerag have a system taking care of everything, most other places is regulating themselves.