anything. proof, that it can be (not that it is always like this). of course there can be possibility that what it was was mixed up with something different. I have had perceiptions where I was not sure at all and thought "ok, just don't know. maybe, maybe not." but others where it was evident.
Is your perception of spirits just a random experience or do you feel you can make it happen any given time?
ok: I did not try to make it happen, so I don't know if I can. As a child I saw spirits while laying in my bed, in the dark. I asked me if that was real or not and scrutinized them with distrust. I really asked myself if that was something on my retina. but I could move my eyes and still see the one or other at the same place. And it couldn't be an effect of light as it got really dark. I observed them for hours in my bed, sometimes. Once I saw something like a dwarf who was working I did not know what under my desktop. That was quite choking, as my desktop was next to my bed, and all that was in MY private room. What was he doing, with what was he working?? Couldn't understand that from what I saw. Which task could this dwarf have to do in my room?! This desktop was MY working place, not his. He didn't ask me for permission! Nor my mother, as she didn't see any spirits, so how could he have asked her! Who was he?? - I was really awake ( I had become a specialist in discerning sleep from being awake, as I also experienced states inbetween and so learned to discern because I asked myself what those curious experiences were.). So I asked the universe to take this stress from my shoulders and take from me the power to see such things. And so I entirely lost it for long time.
Many years later (some years ago) I had another explicite and as choking perception. I had eaten half a glass of flower-pollen. Don't ask me why, I just felt like it

. others may smoke different herbs.

I get my psycho-activating materials without being conscient that they are or may be. Besides, I'm pretty sensitive and don't weigh much, other persons perhaps may need 1 or 2 glasses for such a strong effect. But I would not counsel anybody to try to eat so much pollen without having asked a doctor, I'm not informed about all effects large-dosed pollen can have on a person. The thing about pollen is - as far as I got to know later - that it simply raises the energy. With much more energy it seems that people may get in more intensive touch with their environment and perceive more of it.
So: When I got to bed on this day, I tried to sleep, but suddenly noticed that a strange feeling that had stressed me before got very concise: I had felt just as if there was a various and mixed density of the air around me. and as if the feeling I got from the higher density I felt was as if it had some intelligence and was touching me, but I didn't accept that thought as it seemed completely stupid! But in my bed I just felt somebody laying next to me. I felt a foreign body next to me at the left, and some different beings moving on my right next to my bed. THAT choked me. But not only the perception I was not alone. I rapidly recovered from that, even if I didn't feel ease with this thought and perceiption - who was that around me? what were they doing? and I really didn't want any material or immaterial foreigner next to me in my bed, sorry! Even if he or she or whatever was gentle or did not move at all and didn't take place.
But the really shoking perception I did not recover from until some days was: I felt the presence of beings around my bed. It was just as if my body touched theirs. In places where my physical body evidently was not.
As far as I know there is no explication for such phenomena in "usual western" science (or do you know any? I'm interested!).
In others (f.ex.Indian vedas) there is: they conceptualize we'd have different immatierial bodies of various size. That would be a simple explanation of what I felt (I didn't think of that in that moment, and I'm not sure it would have helped me. I suppose a sensation that goes beyond you have ever experienced and transgresses your conscience of what you are always is shoking, may your intellect understand it or not. I had heard of the Indian approach, my intellect had accepted that it could be possible. But that had not changed anything in how I felt with my body, how I felt my body interacted with the world. And that -I can tell you - is hugely impressive.
So I don't know if I could provoke such a situation, but possibly I know techniques that may work (like large-dosed pollen).
Exactly. You can not prove a negative. That is why, if someone tells you of blue strawberries or whatever, it's up to them to prove their claim. However, if they can not prove their claim within mutually agreed boundaries, you should have no reason to believe their claim is true. Do you agree?
Yes! But

: many persons esteem that (or behave just as if) when somebody did not prove something, that means it is not possible: And THAT is -in my eyes- as false as to believe him. They just don't know.
I don't understand why such things not have been proved. I looked one show of James Randi, with a man who worked with a -rut(?) to detect a stone under a box (several boxes, one with a stone). So, I had a problem with 2 things in the show:
a) James Randi who was next to that man really seamed absolutely convinced that it couldn't work and not wishing that it may work. In my eyes, that's not only not scientific but even not scientific at all

- because, in my eyes, it has an impact on what happens. But ok, I'm pretty sure you won't agree with this, so don't need to discuss it, I don't have any tangible proof (I'll come back to this later - fields of thought / "homeopathy works with people who believe in it").
b) as far as I understood (I did not understand much of what they said, just what they showed), the gemstone should have been under a box. but it was behind. So, if I take a pendulum and ask "is there a gemstone under the box?" and there is none, the pendulum indicates "no". doesn't matter if there is one behind the box.
But I can't believe that there where not made any representative essays by scientists. So I suppose there have been, but they have not proved anything. In fact, I just don't know.
I just can say: I made it and it worked, just as I discribed it. And MANY other people did also. Ok, there is a good amount of people who don't work properly with it, yes. But many people who do work properly with it. And that man, to me, -seemed- to work properly (unlike Randi in that moment).
When many people believe something, that can make it happen. So as I see there are many many people on some parts of our earth on which the proof that working with a pendulum or rut can help to obtain precise data, would have the effect to make collapse their view of the world.
That would be not only frightening by itself, because to imagine this may very probably create the same feeling as to imagine to find yourself naked in a relatively foreign world.
It would also be like a strong impact on their self-confidence: a person that imagines to be adult, to have much experience, to have learned much, to know about things - and suddenly: there's a fundamental parameter proven to be different. "what I thought to know was illusion... what am I able to know? what is real? is there reality? the solid soil under my feet fades... where will I stand upon - and for how long time?!"
Such an effect is enough for most if not all people to fear and not wish it, more or less (in)consciously. That creates a energy field of belief and wish, which is proportional to the belief and / or fear of all these numerous people.
And that field of belief works on reality.
Many people (MikeSun, you also) pretend: homeopathy works because people believe in it (same principle in fact, yes).
In what do you believe?
Which realities are you, are other people as open to accept as the one they use to conceptualize, and which not?
I discern between things I have to believe in so that they start to work (talismans are an example), and things that work without any programmation. People know that plants have certain abilities ("healing power"). But some can not accept the idea that minerals have. I don't understand why, but so it is. Most people don't experience plants as having a conscience. So why should they heal? Because there are glukosides and bitter agents or anything in it? In that mineral there is silicium / bor ot whatever, so shouldn't it possess an even more important effect, after your concept?
As far as I understand, the whole idea of 'rational vs. emotional sides of brains' is largely a myth. amybe there's someone here who can pop up a layman-suitable article on it?
Yes, that would be nice! I did not make any tests as I don't have the required material

.
(ok, that's the first part, I will go on)