Long ago a page was added to this site, a Primer on Time, in response to requests for an explanation of the theory. That was followed by the addition of an examination of the Current Science of Time Travel, looking at the wormhole theory, and considering the two major competing theories proposed for managing paradox, the Fixed Time Theory and the Parallel (or Divergent) Dimensions Theory, and their various expressions. Correspondence had once been posted in an effort to answer frequently asked questions, but this was not an effective way to address these, as continuing mail showed. Several illustrations were used repeatedly in private correspondence with enough frequency that they needed to be made public.
For you brainiacs out there. Found it interesting. (Thanks, Adam!)