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Relativity considers time to be a dimension exactly like the spatial ones, but which we percieve differently, so that our present is just a spatial cross section on our temporal axis. I can see my feet now, even though they have different spatial coordinates to my head. I am wearing socks, but at another point on my time axis, I am not. If, as is overwhelmingly likely, we exist in more dimensions than we percieve, I think that the fifth dimension would act as a meta-time, which would contain different projections of our other axes at different points of its own. Thus someone could see into the future as it stood, but the future could be changed by free-will.
Perhaps a simpler analogy is this: You are standing on one street (The present) looking down another that runs off it at right angles (the future), keep sidestepping (free will) and you are looking down another street (another future).
I think there might be a solution to the grandfather paradox in this multiple temporal axes notion, but I'm too stupid and lazy to work it out.
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"No one was behaving from very Buddhist motives. Then, thought Pigsy, he was hardly a Buddha, nor was he a monkey. Presently, he was a pig spirit changed into a little girl pretending to be a little boy to be offered to a water monster. It was all very simple to a pig spirit."
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