A spinner control, that is.

Spinners always puzzled me, to be honest. There is obviously a need for a compact numeric input control that both displays the exact value and allows rough changes using the mouse. Witness knobs in DAWs—which don’t actually work the way you’d expect from their appearance, you’re supposed to grab and then drag in a linear fashion, possibly ending outside the knob’s screen bounds. Or consider the weird input thing Darktable uses—which at least doesn’t mislead you with false skeuomorphism, but takes a bit to figure out. Then there are the inputs used for color grading in DaVinci Resolve. And so on. And all of them are nonobvious. Spinners are obvious, but they are also needlessly fiddly to use with the mouse, and neither do they provide the at-a-glance readability of knobs et al.

I feel like humanity just hasn’t solved compact numeric inputs yet.