[Dylan16807]

Several people could look at the same lightning bolt and independently write down what they saw, then a third person could verify. That's an important thing that's missing in the story of "the voice sounded the same to me".

You're focused on unknown mechanisms for easily verifiable observations, while my focus is on the (lack of) proof that the song lady actually observed anything at all. For all I know she just listened to what you said and went along with it.

[kranke155]

You’re absolutely right and I can’t convince of anything and I won’t try. All I can say is have some psychedelic trips and see how you feel.

To me it felt as real as anything that’s ever happened to me, and since I’ve spoken to other people who’ve had similar experiences (psychedelic experiences are remarkable in their similarities, I think) I find it hard to just say “none of this means anything, it’s just a hallucination”.

The way I see it it’s odd that someone like me with bipolar can have a natural psychedelic experience and see pretty much similar things as someone on LSD. This suggests that the chemical change in the brain has consistency between people, even if the origin of the chemical change is natural or artificial. So I find it odd to just explain it as hallucinations. Dreams are hallucinations, people have wildly different dreams.

But you change certain chemicals in the brain, and people start seeing roughly the same things? That doesn’t sound like a hallucination to me. I don’t understand how hallucinations between different people, caused by different origins, have roughly similar effects, across populations.

[deciplex]

> I find it hard to just say “none of this means anything, it’s just a hallucination”.

I don't think that's the claim being made. FWIW I've done psychedelics as well, and I've had "natural" hallucinations (sleep paralysis). I don't think that those experiences were "meaningless" (well, maybe the sleep paralysis mostly was) but neither do I think they allowed me to tap into some new physics or something.

To me, the fact that having these experiences requires me to change my brain, first and only then can I have them, with the experience not persisting after I leave the psychedelic state, suggests that the experience is a function of what's going on in my brain rather than some enhanced perception of reality. I say this, because it seems unlikely that there are physical properties of the universe that are only measurable by a human brain and only in a very specific state. Put another way: if some eldritch knowledge were revealed to me in a psychedelic state, I would expect it to be verifiable outside of a psychedelic state, even if by some other means.

The same goes for certain mental illnesses, by the way. If a brain is operating differently, then it seems reasonable that it will have a different perception of reality. But, importantly, if that perception of reality can only affect them or be affected by them then even if I accept it as "real" I can't tap into it - they may as well be living a parallel universe with different physical laws. But if you ask me which is more likely: that some people just exist partially in a parallel universe with different physical laws, or that some people just think that (wrongly) because of some quirk of perception and cognitive function, then even if I don't have a full picture of all the facts I'm going with the latter.

And that seems reasonable: you and another poster seem to think I'm wrong for assigning probabilities without a full picture of the facts. But I can do that with a partial picture of the facts as well: humans do this all the time and it works quite well for us.

> But you change certain chemicals in the brain, and people start seeing roughly the same things? That doesn’t sound like a hallucination to me. I don’t understand how hallucinations between different people, caused by different origins, have roughly similar effects, across populations.

I think a lot of people have a mistaken notion that the human brain starts out as a completely blank slate. On the contrary much of our behavior is hard-coded, like any other animal. It doesn't seem far-fetched to me that there would be realms of human experience that cut across cultural boundaries. If anything, the opposite would be more surprising.

[kranke155]

During one particular episode I was convinced that the LSD-psychedelic world was actually what we now call Dark Energy. I was absolutely convinced of it.

At this point I have no idea, but it's an interesting hypothesis to your question. If dark energy exists, and we never figure out exactly what it is, is it possible that when we take LSD we're actually perceiving it, or some equivalent part of the universe that's non-visible?

I mean if we have non-visible dark energy and dark matter, who is to say that when we solve dark matter/energy, we don't again go back to figuring out that "another 90%" of the universe is detectable but unexplainable? What if the borders of our knowledge will always remain incomplete?