[11B3]

Time is only linear in the observer's plane of reference. To travel to alternate times, you must change refernce planes - whether through quantum changes (physical) or through the learned skills of the yogi (mental). Remote viewing is an example of mental time travel (in which you cannot interact with the past, merely view it), and there are some references to humans who have the capability to co-locate or teleport through space/time.

[I_dmc]

This is a disturbing thing to experience. I've been in other places in dreams, only to discover that what happened there, in my dream, did, in fact, happen there.