Weirdly, it means “universal”. It’s just used as a short for “Roman-Catholic”. The orthodox church is officially the “Orthodox Catholic Church”.

Yeah, it’s not a joke, it literally happens all the time, and an error after block close generally means the system doesn’t think it’s closed, usually because a bracket isn’t paired off.

Literally nobody I’ve seen bring up the trolley problem seems to actually understand it.

The setup is correct, but calling the problem “very simple” just means you don’t understand the trolley problem.