I mean, we absolutely could test this experimentally, depending on the nature of these hypothetical beings.

For example, you could give multiple participants these mushrooms. Bring them into a sealed room one by one. Ask them to report the number of tiny beings around them. Ask them to politely ask the tiny beings to remain where they are.

Imagine if you cycled ten participants through, and each told you there were precisely 11 little humans in the room. With simple methods like this, you could apply statistical hypothesis testing to the results and see if the success rates differs significantly from chance. You absolutely could do real science on this. Science is perfectly capable of testing certain kinds of supernatural claims. Science would have a very hard time trying to determine what happens after death, if anything. But invisible tiny people inhabiting our reality, that we can miraculously see if we do one very specific thing? That's absolutely testable using the scientific method.

Aha. That's what my kitten loses her mind about and starts chasing.

That was my first thought upon hearing about this. No article on this though has ever said if people see the same exact little people doing the same thing.

The second season of Common Side Effects is only three months away! I'm not normally that interested in animated shows, but I'm very excited for this one.

If you've not seen it, the first (and only, sadly) season of Scavengers Reign is also excellent.

Oooh yes they can...

The difference with them is that they can see us all the time.

Also, if two people in the same room eat the undercooked mushrooms do they see the same population of little people or different populations of little people. If it's a shared experience this raises some serious existential questions, otherwise I'd chalk it up to brains are crazy.

The animated TV show Common Side Effects has a similar underlying plot with people who take a specific shroom. They haven't exposed what they do, but everyone who takes it sees them.

The most intense hallucination I've ever experienced by a wide margin was from salvia, which is legal for some fucking reason. Literally everything I could see and hear wasn't real. I guess I'm glad I did it but I think I'm not going to do it again. Thankfully is only lasts a few minutes.

Edit: during my trip, I realized that the entire world was passing by in frames just like a movie and I fell out of the frame I was in. I had fallen outside of my dimension and there were a handful of other ramenshaman that had also fallen out and we started desperately trying to crawl back into out frames. Then the universe started folding and I was afraid I was going to be crushed in the crease of the fold.

Well lemon Tek 4.5g if mushrooms and start playing "the wall" album in the dark once you really start to trip and you'll experience a lot of visuals and feelings. Like, holy hell. I was wore out from the emotional rollercoaster. It also felt like 5 hours went by, even though the album is only like an hour twenty.

I was at a party ~25 years ago and there were kittens running around. At some point, it became unclear to me which of the kittens were real. Some definitely were, but I was sometimes unsure if what was running around me was actual kitten or hallucinated kitten. That's probably the furthest gone I'd been and I still was able to understand that this was the situation. I also did a lot of stuff back then (and don't touch anything these days).

It hasn't been widely available in the west and needs to be rather fresh. Heat destroys this particular effect of the mushroom,for example.

That's the scary difference between psychedelics and hallucinogens: in the former you're aware of your experience, but in the latter you may think that you're actually speaking to your dead grandmother (I'm looking at you, datura).

IIRC, this one in particular causes the exact same effect no matter the cultural background of the subject, even when the subject is going in blind to the exact effects.