Other mistake: Towards the beginning of the movie, Castelgard is misspelled "Castlegard" on the lab's computer screen when Doniger is first explaining everything to the soon-to-be time-travelling team.
Timeline (2003)
1 other mistake
Directed by: Richard Donner
Starring: Gerard Butler, David Thewlis, Paul Walker, Billy Connolly, Anna Friel, Frances O'Connor
Factual error: When the French are besieging the English Castle at night, their archers appear to be using longbows that were used exclusively by the Welsh and English in the hundred years war.
Marek: We're speaking the same language, but you don't understand a word I'm saying, do you?
Lady Claire: No.
Trivia: Timeline was filmed with no CGI. The battle scenes, time transport, etc, were all created through other filming techniques...although a few of the scenes are slightly computer enhanced.
Question: Why is it that they aren't allowed to bring any modern weapons into the past? The grenade didn't seem to be affected. A simple air gun with tranquilizer darts would be enough just for protection.
Answer: Because you can never know what kind of influence the discovery of such a thing by the local people would have on any of those involved. The grenade was not supposed to get sent back, but since it exploded, not enough pieces are left for local people to wonder about them if ever they find some. That would not be the case for a full weapon.
Sereenie