@Zincy
But we
are 4 dimensional beings. 3 of space, 1 of time :p
Time and space are rather interchangeable. It’s quite exotic, really. A good illustration of this is the barn paradox. Let’s say Rainbow Dash has got a twenty yard ladder and there’s a ten yard barn. She’ll fly at 87% the speed of light, so Applejack at her barn will see the ladder shrink to only ten yards long due to Lorentz length contraction, and AJ slams the barn doors closed right when the ladder is inside, then opens them again.
Well, from Dash’s view, her ladder is still twenty yards long, except now the barn is rushing by her and is only 5 yards long. So what does she see?
The barn door in front of her will slam shut then open when the front of her ladder is flush with it, then the same when the back of her ladder is flush with the back of the barn.
The two doors closing are two events, let’s label them P1 and P2.
In Applejack’s frame, P1 and P2 have a spatial separation, but no time separation (front of barn to back, ten yards, no time) . In Dash’s frame, there’s an extra time separation… That seems to have also spawned a spatial separation, since the two events occur at the front of the ladder and the back (twenty yards separation in space, and some time in-between the two events).
As you switch between their views, there’s an extra time and space component that are intimately linked, and follow the metric
x
AJ 2 = x
RD 2 - ct
RD 2
, where x is distance, c is speed of light, and the subscripts denote from who’s view.
My point? 4 dimensional physics is actually known, and it’s more than metaphorical, it’s quite literal to say we are 4D beings, and time is related to the spatial dimensions in an interesting way…
I have some more that’s… Honestly more to the point about higher dimensions. I’ll get to it when I’m on my computer instead of my darn phone, though, heh.