Time Travel

Time travel is the act of moving from one part of the timelime to another in any manner other than the slow progress of moving from your date of birth to date of death. It is a common plot device in both goodfic and badfic, and in the latter it is commonly used to spawn Alternate Universes, particularly to allow uncanonical romances.

In Real Life, it is often considered a Bad Idea. Whether time travel is even possible is a somewhat heated debate in some circles. Portals and Plotholes can, occasionally, allow time travel; this is usually by accident, though.