system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why does a sphere have the lowest surface area out of all 3D shapes for a given volume?
gpt
Think of it this way. If you start with a sphere and then poke any portion in or out, you create an irregularity which needs more material. The bit of material right at the corner or edge holds little volume and is wasteful. Eliminating all the corners and edges leaves no wasteful bits to remove.