Elementary Temporal Mechanics was a course taught at Starfleet Academy during the mid-24th century that dealt with the basics of temporal mechanics.
When the crew of the USS Defiant traveled back in time to 2268, Doctor Julian Bashir was worried that a flirtatious Lieutenant Watley was his great-grandmother, and that he may be facing a predestination paradox – which he learned about in Elementary Temporal Mechanics – where he was destined to become his own great-grandfather. (DS9: "Trials and Tribble-ations")
External link[]
- Elementary Temporal Mechanics at Memory Beta, the wiki for licensed Star Trek works