The time travel anti-argument applied to higher dimensions.

[Euclid]

One of the classic arguments against time travel (TT) is the notion that if TT were possible, why haven't we seen any travelers from the future? Science fiction movies always have the time travelers under penalties of law not to reveal that they are TT's and stern warnings about the disaster of either running into a younger self or harming an ancestor.

So, if there are creatures in the other dimensions, why haven't we seen them? ...or should I say, experienced them? Has anyone seen a hypersphere lately?

[elpenmaster]

perhaps we have

but if you saw a 4-d thing, you would only see a 3-d slice of it

so you wouldnt know that it was 4-d, even if you saw it

perhaps your computer is working a little faster today because a 4-d dude replaced your 3-d computer with a faster 4-d one. but you only see a 3-d slice of your 4-d computer, so you do not know that it is 4-d

[Geosphere]

Maybe they are micro/macroscopic.

OR

When's the last time you saw Pluto? You mean it exists even if I haven't witnessed it? And it existed all those years until someone had the technology to see it?

Wow.

And wait - there are lifeforms living in volcanic fissures in the floor of the ocean? But They never came up to say Hi to us?

Maybe they can't or don't want to make contact.

[Euclid]

perhaps we have

Now that's an interesting comment.

In Flatland, A Square sees a circle, the 2-D embodiment (no pun) of the 3-D sphere. So indeed, under that onus, you could "see" a 4-D thing as it's 3-D slice.

[Euclid]

Maybe they are micro/macroscopic.

OR

When's the last time you saw Pluto? You mean it exists even if I haven't witnessed it? And it existed all those years until someone had the technology to see it?

Wow.

And wait - there are lifeforms living in volcanic fissures in the floor of the ocean? But They never came up to say Hi to us?

Maybe they can't or don't want to make contact.

All good and interesting arguments. In fact, each of the above opens new possibilities...

a) Micro/macroscopic --why would this preclude contact? Assuming sentience of course.

b) Pluto --we aren't talking about whether or not a 4th dimension exists or not (at least i wasn't), although I imagine there is still some discussion along those lines.

c) Can't/Won't --ahhh, there's the discussion. I suppose first we need to resolve the existence argument.

[Rybo]

perhaps we have

In Flatland, A Square sees a circle, the 2-D embodiment (no pun) of the 3-D sphere. So indeed, under that onus, you could "see" a 4-D thing as it's 3-D slice.

This reminds me of Jacobs Bekenstien holographic black hole article in Scientific American Jan or Feb issue. Jacobs holographic studies leads to the idea that we are 2-D creatures who are having a 3-D illusion. Lee Smolin gives outline of this in his book "3 Roads to Quatum Gravity." Jacob Bekenstein along with S. Hawking discovered "Bekenstiens Law" in the 70's which states that the entropy hidden on the inside of the black hole is equal to the surface area of the event horizon of the that black hole. This equates to me as 4*Pi*R^2 as discoverd by Archimedes regarding spheres and cones but specifically the areas of 4 hexagonal planes of a cubo-octahedron(Vector Equilibrium) being equal to the surface area of the cubo-octahedron being defined. Here is link to my web site containing a brief encounter with this info. Sorry I dont have more on Jacob Bekesntiens Law.

http://home.usit.net/~rybo6/rybo/

Rybo

[Keiji]

b) Pluto --we aren't talking about whether or not a 4th dimension exists or not (at least i wasn't), although I imagine there is still some discussion along those lines.

Pluto is a planet in our own dimension...

[Euclid]

b) Pluto --we aren't talking about whether or not a 4th dimension exists or not (at least i wasn't), although I imagine there is still some discussion along those lines.

Pluto is a planet in our own dimension...

Thank you.