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As stated earlier, I think the title of your question is incorrect. Most citations referring to knobs offering an affordance of rotation are typically referring to knobs other than the ones on doors. Such as the ones on a radio tuner...which tend to have a lot more physical (and visual) cues as to how to interact with it (knurled 'grippy' edge, a tick mark ...


“Affordance” is one of those terms that has come to be used for so many different things that I’ve recently just about given up using it in order to avoid confusion. Affordance as possible physical interactions In the original definition put forth by Donald Norman (1988) in The Design of Everyday Things: The term affordance refers to the perceived ...


They sometime don't afford twisting very well Your observation is a good and nuanced one. Door handles are used frequently as cases in design texts because they can represent: A ubiquitous interface A complex, compound interaction (the knob must be twisted in one or another direction, and then the door pulled, pushed, or slid) Therefore, twistable ...


I also agree with the "grippy dots" (option D) as they are documented here: What is the best icon to show that something can be dragged and reordered? Think that the hamburger could be misinterpreted easily and the other options aren't as clear as they could be.


I always thought it should be turned on by default. I've introduced countless people to Macs and I take a close look with their first interactions with it. They try to tap the trackpad numerous times and don't understand immediately why their "clicks" are not registering. Last time this happened was last week. My friend is a Judge and a VERY smart person, ...


I think a cheap way to make it clear is to add a small, gray text next to 'identity' stating 'multiple selection' or something like that. It can also be stated within the dropdown. Or add checkboxes for options within the dropdown of 'Identity'.

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