I thought the fourth dimension is time. I'm sure there are dozens of people from the distant future observing me via remote wormhole cam at this very moment.

/read Arthur C Clarke's "The Light of Other Days"

more recommended reading - Robert Heinlein's "And he built a crooked house"

It's about an architect who builds a four dimensional tesseract house

If anybody really wants to see what it's like to go to another dimension, try some Salvia Divinorum, and do it with care.

I don't know where we go when we smoke it, but it's a much different place.

See also: http://youtube.com/watch?v=BWyTxCsIXE4

hmmm... if all the angles were right-angles... thats wild.

On the topic of salvia, remember, those wonderful worlds and states you transiently explore only exist in that great mass of electrochemistry that is your personal brain. Its easy to get caught up in those places but there are some mind-blowing things going on in our shared world as well. Coolest thing about salvia that I've read is its not a serotonin receptor agonist as far as people can determine, but a opioid receptor aganostic. Which is very peculiar for a hallucinogen, and apparently leads to peculiar effects when compared to the classics.

oh crap, searched for tesseract and found an extremely fun animation at http://en.wikipedia.org/wiki/4th_dimension

Well he didn't make much attempt to make things exciting but I'm glad I watched the whole thing. I am already familiar with tesseracts but the perspective of dimensional shadows was interesting.

@bamdrew: wow, great animation there. Thanks!

"...those wonderful worlds and states you transiently explore only exist in that great mass of electrochemistry that is your personal brain."

Perhaps. Water is water whether it's in a coffee cup or the wide blue sea.

But a coffee cup is nothing like the wide blue sea.

When a person's consciousness leaves the sphere of normality there is really no significant distinction between here or there, subjectively speaking, and all experience is subjective.

Yes - Salvia D is singular regarding the psychotropes. It is the closest thing I've ever experienced that could be considered being on a different dimension (maybe the second, maybe the fourth, I can't say).

(P.S. bamdrew - thanks for that link - great animation)

rougy, I've also used Salvia a couple of times, and for me it also seemed like exploring other dimensions. It's too bad though that the recollection of a Salvia experience is always dreamlike and I really need to do it again to get that aha moment of realization again.
Best I can explain it when I use it is that what I see around me is my room extends into infinite copies of itself in every direction, each copy slightly different. Then I - though the concept of I is completely gone at this moment, total ego loss - drift further "up" and oversee it all as some twirling unzipping fractal of which I am a part. It really is indescribable.

"Best I can explain it when I use it is that what I see around me is my room extends into infinite copies of itself in every direction, each copy slightly different."

Me, too. I'm really surprised that you said that, because if I had to describe it myself, I would use the same imagery.

Have you noticed that it always feels like somebody else is there, watching?

I can't do it much because it creeps me out. But I do sincerely think that it puts our minds eye on, or very near, a different dimension.

That's interesting that you have the same experience, many people have very different experiences on it.
Yeah it's also really scary to me, but also incredibly fascinating. I do it occasionally, and then a few times. I don't have the feeling of someone watching me, though I have heard it reported a lot. It's more like I'm part of a super-consciousness. Once on a high dose I got so deep that everything was unzipped and there I sensed entities, but it was scary cause they felt more like my parents than my parents do. I know this sounds crazy, and it is.
Have you noticed the gravity effect of it? when I use it I'm always being pulled and rolled into one side.
I'm really amazed that my mind can build these constructs and experience under the influence of Salvia, but I don't believe it points to any higher truths are anything (I'm not new age).

DMT is something you might want to try if you really want to see other dimensions. Its what your brain produces to make you dream but the effects are very diffrent if you smoke it. Its really one of the things you cant describe and you sometimes wont even remember any of it if the dose is to high just like when your asleep. Heres a video of a user talking about it.
http://www.videosift.com/video/Joe-Rogan-talking-about-DMT

If I "really want to see other dimensions"? I can tell you the demensions Salvia produces are quite real for me while I'm under the influence.
It is hypothesized that your brain produces DMT while you dream, it is not known for sure, it does occur in small quantities naturally in the brain.
I am however curious to DMT and I will probably try it at some time. Probably first in the form of Ayahuasca.

So did he just rip off the book 'Flatland'? He gave credit, I guess, but all the mind blowing ideas are from the book, not him.

If you think of time as the 4th dimension, then a cube held still over a length of time is a hypercube.

OK folks, enough drug talk (although it does sound fascinating).

Please replace embed with this much better version.

At 0:31
wait, what was Edwin A. Abbott's job again...?

Gregor Mendel: a pea farmer who lived in Victorian Austria.

*dead

This video has been declared non-functional; embed code must be fixed within 2 days or it will be sent to the dead pool - declared dead by EDD.