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by setr 2539 days ago
Which is exactly the purpose of a knob in meatspace too :)
1 comments

Right. Physically, potentiometers are semicircular sliders.

But another advantage of knobs is the ability to turn them, quickly and yet accurately, with thumb and first finger. Some even have push-pull gear reduction, to go between fast and accurate.

So you'd think that a GUI knob would use some analogous two-finger twisting gesture. With thumb and first finger.