What is viscoelasticity?Viscous means a material is thick and (reluctantly) runny—treacle, for example, or thick lubricating grease. The more viscous something is, the longer it takes to flow from one place to another. Water isn't very viscous (we say it has "low viscosity") so it ...
This is what happens in the book Lightning. I do not believe this can be done, but as the future has not happened yet, I do not see the same problems as with traveling back in time. Of course having a good guess of the future is not the same as traveling to it... If you did...