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210
votes
15answers
39k 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 ...
91
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 ...
0
votes
2answers
107 views

Why don't all washing machines beep when finished? [closed]

I've owned several dishwashers, and they all beep loudly several times when they have finished a cycle. Not that I care, because I don't need to rush to open them and grab the clean plates. Usually it ...