system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why are metals smelted into the ingot shape? Would it not be better to just make then into cubes, so they would stack better?
gpt
Whenever you pour something into a mold to solidify, you have to worry about getting it out again, and that's much easier when the walls are at an angle like \\___/. That's also why molds for cakes or ice cubes are often shaped that way.