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Why shouldn't electric plugs screw in?
(programming.dev)
A "Showerthought" is a simple term used to describe the thoughts that pop into your head while you're doing everyday things like taking a shower, driving, or just daydreaming. A showerthought should offer a unique perspective on an ordinary part of life.
For what benefit?
Rather have a plug pull out of an outlet than it ripping the cable out of the housing of the equipment it is in or cause other damage. But more importantly, we do have connectors that let you screw in a plug (or have a latch or other locking mechanism). Very common on higher voltage equipment in industrial applications. But again, what is the benefit for day-to-day use for regular devices? Plugs don't just fall out of outlets on a regular basis. This isn't really a problem that needs solving.