When Rudy and Steve come to the island lab, a giant board is protruding through the door. Steve kicks the door open. The next camera shot is from inside the lab as the two are entering. The door has no damage in that shot.
Cheryl uses a large reel-to-reel tape recorder to verbally document the unexpected negative effects of her drugs, yet later, Rudy listens to Cheryl's words on a small portable cassette recorder.
When Steve frees himself from dangling upside-down from the rope, the final strand of rope retains its spiral shape even when Steve's weight is pulling down on it; it's obviously a stiff metal wire strand from a spiral-wound steel aircraft-cable, not a flexible fiber of rope that would straighten out under tension, even if it was formed and set in a spiral shape when it had been part of the rope.