Continuity mistake: When the Man in Black wakes up with a noose around his neck, there are only 4 distinct loops in the hangman's knot. A few seconds later, he cuts the rope and collapses to the ground, and there are now 6 distinct loops in the hangman's knot.
Westworld (2016)
1 continuity mistake in show generally - chronological order
Starring: James Marsden, Jeffrey Wright, Thandie Newton, Evan Rachel Wood
Trace Decay - S1-E8
Factual error: When the armed party comes into town to steal the safe in the bar, the leader points a repeating rifle at a victim on the ground and shoots. When he fires a used cartridge flies from the gun. Repeating rifles do not eject cartridges when they are fired. Automatic weapons eject a spent cartridge when fired. Repeating rifles only eject the cartridge when the lever is wrenched. (00:32:20)
Teddy Flood: Well, your mouth moves fast enough. How about your gun?
Passed Pawn - S3-E7
Trivia: Enrico Colantoni plays Whitman, who Rehoboam arranges to be removed from society. Fitting casting, as he previously played Elias in Person of Interest, a TV series based on the idea of an AI eventually making decisions for humanity and removing threats.