Other mistake: In the scene where Ripley throws the basketball at Johner, Christie says to Ripley, "Ok, I've got a new game, tag .." He hits her with the handles straight in the face once, he misses the next shot, misses again, and Ripley hits him to the ground, but you neither see or hear the handles fall. (00:23:15)
Alien Resurrection (1997)
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Directed by: Jean-Pierre Jeunet
Starring: Sigourney Weaver, Winona Ryder, Ron Perlman, Dan Hedaya, Gary Dourdan
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Trivia: Purvis is one of the human hosts for an alien and it rips through his chest on the betty. In an episode of The X-Files, the man who plays Purvis plays a scientist who is a human host of an alien which burst through his chest.
Question: Curious on why the surgical equipment doesn't melt when removing the Queen chest burster from Ripley when she has acidic blood?
Answer: This is just speculation (and I haven't watched the movie for ages) but the operation is done with medical equipment in a facility designed for studying Aliens, which the military knows a little about. Maybe it is made of futuristic acid proof material.
If the surgical tools were acid proof, surely the floors of the cells that contain the grown alien specimens would also be acid proof. But that is how they escape: by sacrificing one of their own in order to spill acid blood onto the floor.
Well, you can imagine any acid-proof metal is probably very expensive. They can't make the entire station out of that stuff. Surgical equipment is probably necessary for their research, so they make an exception.
lionhead