Can be anything, from characters not using objects they have on them, to physics not being realistic, or a very big plot hole.
As an example, one of my friends told me that his pet peeve is that in a lot of sci-fi movies, when spaceships run out of fuel, they stop moving, while inertia and lack of atmosphere should keep them in motion.
I think shock waves might still make sound. Once they hit you, that is, not when you first see them.
I like it when a movie accounts for the extra time it takes for sound to travel. I’m replaying subnautica and when the ship explodes you hear it right away even though it’s about 1km away and it was disappointing.
Shock waves need a medium to travel. If something explodes in space, it will send debris that might hit you, but if it produces a shock wave in a low-density environment, it would probably miss you due to the lack of matter.
Ah thanks, til that shockwaves aren’t distortions of space-time itself and just a pressure wave on whatever is in the area.