As some background, I really don't know all that much about physics except what I study in school. So, this question might make me sound like a noob, but I hope I can be beared with.
Anyway, I watched a video explaining string theory(Brian Greene's at TED), more in layman's terms, and the speaker said that the supercollider at CERN (which was still under construction when the talk was given), could help prove string theory. He also said that the way that that would be proven was that when high speed particles collided, it would be observed that some of the debris get injected into previously undiscovered dimensions.
And we would know that this happened if the energy of the system measured after the collision is slightly less than the energy before the collision, because some of the mass and energy are in other unknown dimensions.
But I also read later, that the collider hasn't yielded any such results even after almost a decade of research.
So, my question is, what if the devices we have for measuring these energy changes, unknown to us, are affected by or take into consideration even these higher dimensions? Then, maybe string theory is correct and the debris from these collisions are being injected into higher dimensions, but our readings don't show it because our readings, unlike us, are counting these higher dimensions too.
But I'm not really sure about this because I'm no physics expert and I've only heard of string theory being explained in layman's terms. So. there's maybe more to the picture than what I'm currently seeing. But at the risk of sounding like a total noob, the above is my question.