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90
votes
13answers
24k views

Why do door knobs still exist?

As far as I know, in US, grip-and-turn style door knobs are still the most popular, as opposed to lever-style handles, which dominate in the rest of the world. Is there some UX advantage to door ...
205
votes
15answers
38k views

Why do washing machines have windows?

I'm curious why every front-loaded washing machine I've seen so far comes with a window, while other household machines, like dishwashers, don't. From a design or UI/UX perspective, why would one ...