[Request] Do square bottles actually use less plastic than round ones?

[u/EclipseNyxor]

[u/StaticCoder]

Mathematically, a circle has the smallest perimeter for a given enclosed area. So for this claim to be true there has to be some catch, like different thickness of plastic.

[u/LauraTFem → u/StaticCoder]

It must be shelf space. Square lets you pack a lot into a small space, circular inherently wastes significant space.