Power Plug: The wider prongHow a fraction of an inch keeps the live wire away from your fingers.

From the show

Why it looks like that

That moment of frustration when a plug won't fit is actually a safety check working exactly as designed. This asymmetry, known as polarization, ensures electricity flows through your appliances in a specific direction. Discover how a slightly wider metal blade prevents the threaded collar of your light socket from becoming electrically live, protecting you from accidental shocks.