system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why cans/tins of foods such as soup and fruit, as well as jars of food, are mainly cylindrical rather than other forms, such as cuboidal.
gpt
Canning involves changing the pressure on the inside of the vessel, and using a shape that has edges makes those points weak spots which could collapse, crack, or break. By being round, all the pressure on them is distributed equally around, like an archway in a stone wall. It's also one of the most efficient storage shapes that has little wasted space but is still able to bear weight when stacking.