Excuse me? You can't be serious. If people tell you that, they are pulling your leg.
Nobody pulling my leg, because I figured it out all myself (and it wasn't easy).
Jumping off a bridge and negotiating with reality that the ground is very soft... does not work.
No, because it is already negotiated, and you would have a hard time truly believing otherwise. I'll get to the "truly believing" in a minute.
Science does have a logical process to establishing correlation AND causation. It did debunk a lot of misconceptions - like the idea that a shamanic dance will bring rain, for example. Most of the time, you'll just end up with a perspiring dancer, but no rain.
Let's start from here, because that's right to the point.
Why is it so important to debunk those shamanic misconceptions? Because these savage people, believing in shamanism -practically all of them- live in a well-balanced, sustainable, healthy relationship with nature. So how could we teach them our advanced way of exploiting, poluting and destroying nature, if we would let them continue to believe in shamanism?
Ring a bell, somewhere? No, but that's just corrollary. Lets get closer to the core.
If you bring so called "scientific proof" that shamanism cannot work, then certainly shamanism will no longer work.
That's because everybody has the same rights. When the shaman can use techniques to alter his mind in order to impose his idea of rain onto reality, and thereby make it rain - then the scientist can as well impose his idea (that shamanism is impossible) onto reality and thereby make shamanism impossible. As easy as that.
So, why does that work? There are two approaches to understanding the universe. One is: there was once a big bang, then suns and planets formed, organic compounds arranged themselves, somehow, and out of these, finally, just by accident, a thing with brains appeared, called human. Nobody can explain how that might be possible to happen, but people are made to believe it.
And nobody, until today, can explain the difference between a living being, and the very same collection of molecules which are a dead being. We can describe many of the chemical processes inside a living being (but by far not all), but we have no idea what makes it living.
The other approach is the Goethean: mind over matter. There has to be a mind first in order for matter to even come into existance. But, while the big-bang-story has a timeline, this one is outside of time. Because time is only a by-product from the process when energy crystallizes into matter (see general relativity). The mind is normally not subdued unto time, and time doesn't exist a-priori, rather the mind falls (from grace) into matter. Religious literature explains the details about the fall.
So, which one of these two is true?
There is a way to make sense of all of this, and that is psalm 82:6 I have said, ye are Gods.
God is not a distinct entity, and creation is not a distinct process. Instead, when we say, we "discover" the universe, we actually create the universe. And that's the process of negotiating reality.
Now, as I said, belief is everything. But truly believing happens only by accident. Why - because you have a sub-conscious, and that happens to belive in it's own things. And you would need a full featured psychoanalysis to even
know all these strains of sub-conscious, not talking about getting them into one coherent belief. But if by any means you would be able to achive that kind of mind-control, then indeed you could jump from the skyscraper and fall onto soft ground (if there were any point in doing so).
As I said, I had a hard time getting to these ideas. And then I spent a couple of years strongly believing that I had gone mad. Until I figured that this is not even something new; this is what mystics knew for thousands of years already.