> Everyone cares about polarity - when you have a 3 prong plug, then the ground forces the orientation of hot vs neutral, and the two prongs are the same size.

> Everyone cares about polarity - when you have a 3 prong plug, then the ground forces the orientation of hot vs neutral, and the two prongs are the same size. EU/German/Shuko and Italian plugs are entirely reversible and grounded, that’s what the OP probably was referring to. There’s no way to force an orientation (and thus a “polarity”)