- The obvious is that Cole is incarcerated in both times; in the future he is trapped in an underground jail and in the present he is locked in a mental clinic.
- In the future scenes there are 5 scientists behind a table trying to decide if Cole is the proper man for the mission. In the present day there are also 5 scientists behind a table to figure out if Cole is sane or not (essentially the scientists in the asylum are six if it takes into account Dr Kathryn Railly who is present during the interview. In the final future scenes there is a sixth scientist appearing who, according to the credits, is a mechanic).
- Right before he time travels, Cole is decontaminated in the showers. After he is apprehended in 1990 and taken into custody he is also forced to shower. In both circumstances he is supervised by two guards, one black and one Caucasian (in the future the white guard is thin and the black guard is obese whereas in the present it is vice versa).
- In 1990 Cole tries to escape from the asylum. As he is roaming in the corridors in a drugged and dizzy state of mind he accidentally enters a room where a cat scanning is conducted. The cat scanner is strongly reminiscent of the time traveling device in the future.