Why Can't We Get a Handle on This Safety Thing 5

Let's say I'm making my decisions at the 99% level, and so are all my friends. Out of every 100 decisions, 99 do not result in any negative consequence. Even if they're bad decisions, nothing bad happens. Since nothing bad happens, I think they're good decisions. And this applies not just to my decisions, but to my friends' decisions as well, which I observe. They must be good decisions; they worked out didn't they? The next natural consequence of this is that I lower my decision threshold a little. Now I'm making decisions at the 98% level, and still they're working out. The longer this goes on, the more I'm being reinforced for making bad decisions, and the more likely I am to make them.
Eventually, the statistics catch up with me, and my descending threshold collides with the increasing number of opportunities I've created through bad decisions. Something goes wrong. I blow a launch or a landing, or get blown over the back, or hit the hill on the downwind side of a thermal. If I'm lucky it's a $50 downtube or a $200 leading edge. If I'm unlucky, I'm dead.
If we can agree at this point that making 100% correct decisions is the only safe way to fly, it then becomes interesting to consider, as an aside, what the sport of hang gliding would look like if we all operated this way. Pilots would choose to fly in milder, safer weather conditions. They would operate much more comfortably within their skill and experience limitations. They would choose to fly more docile, more stable, easier-to-fly gliders. Landings would be gentle, and under control. Hang glider manufacturers would sell two downtubes and one keel for every glider they build (the ones that come on the glider) instead of three or four replacement sets like they do now. There would be far, far fewer accidents. (As it is now, there are about 200 per year reported to USHGA.) There wouldn't be any fatalities, except maybe for one every couple of years if a pilot happened to die of a heart attack while flying (it's happened once so far that I can remember).