It's not totally incoherent, but it needs... well, lots of work. It could be that the 3rd dimension is "small": not small compared to human beings, but small compared to, say, the solar system. In order for it to make sense -- i.e. you don't want the universe to have "edges" -- probably you'd wrap the 3rd dimension up into a cylinder.

Whoa. Okay: now, the Earth's acceleration is purely around this cylinder. Furthermore, the sun and moon and stars and what not are -- guess where -- under the Earth! That's what keeps them at a fixed distance from us -- the distance is the circumference of the cylinder.

I'll make a picture when I get a chance.

(and possibly an imaginary time dimension that runs vertical to horizontal time, it's a math thing).

This is new to me. Clarify?

-Erasmus

with pleasure.

for me to explain this though you have to step into the realm of more recent theoretical physics. In Quantum Theory we find that there are actually many possible histories for particles, and that they take all possible paths. In our history however we of course only see one(yes we have an equation that governs this). In order to better understand this concept picture time as an X line on a graph. it's a straight line, go foward to reach future events, backward to reach past ones. But to incorporate the Sum over histories equation, which says a particle takes every possible path from A to B(but we observe 1 in our history), another measure of time was needed. much like imaginary numbers, imaginary time was concieved, and it matches well with observations. picture that X line again, imaginary time runs Y, or vertical to X. Y is all the other possible histories. so let's say Y=0 is our history. anywhere from -10,0 to 33242342,0 are times that have or will happen in the past or future for us. Y=1 however is a completely different history. maybe in it nobody ever challenged the flat earth theory till the end of civilization

. Y=2 would be yet another history, and so on.

don't confuse the mathematical concept of imaginary with the literal one however. the reason that imaginary time exists as a concept still is because it agrees mathmatically with observations so well. also this opens up the idea of a 2 dimensional time, which makes holography a possiblity. A hologram is a 2 dimensional image that is created by refracting lasers off a 3 dimensional surface a certain way. The thing about holograms is that they contain enough data on them to recreate the scene in all 3 dimensions. which means that it is possible that we exist on 2 dimensions of time, but are projected much like a hologram into a 3 dimensional physical universe. I'm not making this up these are the current theories being discussed. pretty neat stuff.