Factual error: Eve Curie is shown as having been born before the Curies are nominated for the Nobel Prize in physics, which they eventually won in 1903. However, Even Curie wasn't born until December 6th, 1904.
Factual error: In the courtroom scene, the seal behind the judge reads, "United States District Court for the Southern District of California." This is a mistake - the US District courts are federal courts, they have no jurisdiction to hear divorce cases. The proper venue for this case would be the Superior Court of Los Angeles County, which is the state court with jurisdiction to hear family law cases in Los Angeles, California. The seal should have the state court name, not the federal one. (01:30:34)
Factual error: When Zapan speaks while his face is chopped off, the producers have failed to take into account the importance of mouth and tongue in producing speech. As a cyborg, Zapan could use speakers to produce a voice, but he isn't.
Factual error: The family supposedly left Ex-Yugoslavia (what part isn't made clear exactly) "because of the war", but the only conflict still going on there in 1999 (when the family is still there in the opening scene) was the NATO bombing of targets in Serbia in order to get the Serbs to lay off Kosovo, and that was long over by Christmas of that year.
Factual error: The buttons on Keira's twin-set cardigan would have matched the cardigan colour. Light buttons were a cost-cutting exercise many decades later.
Factual error: The protagonist wakes up supposedly at 5 AM of December 2nd in New York City. Outside, the sun is shining, almost two hours too early. (00:00:15)