Other mistake: When Seth comes out of the pod for the second time and the girl is watching him she moves her leg reveling panties. However, Seth comes over and they start intercourse. How? He doesn't even move her underwear to one side.

The Fly (1986)
1 other mistake - chronological order
Directed by: David Cronenberg
Starring: Jeff Goldblum, Geena Davis, John Getz, Joy Boushel
Plot hole: In any given volume of air, there are any number of tiny, living organisms; dust mites, viruses, bacteria, etc. Why did the teleporter combine Seth's DNA only with the fly that was in the chamber? If he had taken the "floating organisms" into account in his calculations and programming, then why would he not have excluded ALL foreign DNA?
Seth Brundle: I think you're making a mistake. I think you really want to talk to me.
Ronnie: Sorry, I have three other interviews to do before this party's over.
Seth Brundle: Yeah, but they're not working on something that'll change the world as we know it.
Ronnie: They say they are.
Seth Brundle: Yeah, but they're lying. I'm not.
Trivia: Michael Keaton was the first choice for Seth Brundle.





Chosen answer: I think it was a chip from an old-styled electrical device, like a computer.
kh1616