Temporal Anomalies in Time Travel Movies unravels Problems in Time
Time travel has been a staple in Science Fiction since H.G. Wells. Unfortunately, much of what passes for intelligence in this area is poorly considered. It is not possible to return to the past without changing the past in some way; nor is it possible to change the future based on information from the future. Suprisingly few rips on Star Trek, considering how shoddy they deal with this.