system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5 how come in shows when a plane door opens up, everyone gets sucked into it?

Idk how accurate it is, but whenever a plane door opens in a show or a movie, it’s like some sort of gravity vortex gets activated and everyone is trying not to get pulled into it. What gives?
gpt
At high altitudes, the air pressure and density are extremely low, making it hard for people to breathe. Passenger planes pressurized the cabin to be of a pressure equivalentish to earth’s surface. This means that the air pressure win the cabin is constantly pushing outward. If a large hole is made, all the air will rush out, and will likely push unsecured objects or people out with it. Luckily it’s essentially impossible to open a cabin door at high altitudes, because even if it were unlocked, the door opens inward, which means the internal pressure will keep the door closed. But when for example the plane becomes damaged a large enough hole might exist and suck things and people out.