system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: why are there weight limits on suitcases but not the people on the plane?
gpt
It's worth noting there may be weight limits depending on the size of the plane. A large airliner doesn't really matter, but a small passenger plane has to know the weight of the passengers and make sure they're evenly distributed around the plane. You can't have a 500lb person in the right side and a 30lb person in the left, the balance of the plane will be too far off.