Deliberate mistake: When the board member is shot up in the beginning by ED-209, in one or two shots you can see the bullet impacts happen about 1/2 a second after the shot starts (Criterion DVD version). (00:11:55)
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Robocop (1987)
1 deliberate mistake
Directed by: Paul Verhoeven
Starring: Ray Wise, Ronny Cox, Peter Weller, Miguel Ferrer, Nancy Allen, Dan O'Herlihy, Kurtwood Smith
Continuity mistake: Dick Jones brags (admits?) to Robocop, "I had to kill Bob Morton because he made a mistake. Now, it's time to erase that mistake" while Robocop is crouched on the ground, not only looking away from him from across the room, but also Robocop's eyes are in a vertical position. In the playback, Jones is facing the camera as though it were videotaped or filmed in a studio. (01:10:50 - 01:35:10)
[After ED-209 kills a junior executive.]
Dick Jones: I'm sure this is just a glitch. A temporary setback.
The Old Man: You call this a GLITCH?
Trivia: ED-209's voice is provided by producer Jon Davison. He was recorded as a placeholder, but the filmmakers kept it for the theatrical release. ED-209's roar is a jaguar growl played backwards.
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Answer: According to Wikipedia the ED-260 is an upgradeable version of the ED-209.