I was thinking about it, and having seen the images depicting gravity as warping space-time, and relating the inability to unify the theories on the other forces with that of gravity, a thought formed in my little head - which is probably already old stuff.
What if gravity as a phenomenon isn't really a 'force' at all, but merely a three-dimensional manifestation of a reality that exists in an extra, fourth if you will, dimension?
Mass has some effect in this fourth dimension (of unknown characteristics), and as a result we see bodies 'gravitate' toward each other in 3-space.
One might be suggested to think that in such a scenario, gravity is a phenomenon set totally apart from the theories of the electro-magnetic forces, and the strive to unify the two will forever be an utterly wild goosechase.
Or it could also be so that the electro-magnetic forces in some way apply in this fourth dimension, and manifests in 3-space as matter moving closer to matter.
Is this the same as the warping of space-time hypothesis?