Continuity mistake: When Rowan is stabbed by Jason she slides down to the floor and freezes sitting up. She remained undiscovered and undisturbed for over 400 years until the scientists find them. So how did she end up lying on her back covered up by what look like exhaust tubes? Aside from the unlikelihood of no-one stumbling across her for all that time.
Continuity mistake: In the fight scene between Jason and Kay-Em, she's blasting away at him with the auto-guns. When Jason falls, you see that his machete is almost bloodless, but a second later, it's bloodied up again.
Answer: It's set nearly 500 years in the future. Naming conventions change.
Brian Katcher