It's established in Terminator that only living organisms can time travel. No clothes, weapons, metal. Arnie is able to as totally covered in flesh. But in Terminator 2: Judgment Day the T-1000 liquid metal Terminator travels via same time machine with no living matter...
In Ferris Bueller's Day Off why was the principal okay with the Dad making out with the daughter but not okay with Ferris skipping school.
Seems like the incestial relationship was a bigger deal than a kid skipping classes.
After Cal empties his pistol firing at Jack & Rose in Titanic, why do they run deeper into a sinking ship rather than going back on deck as Cal is no longer a threat with the gun?