I agree with the author about the singular point control being the wrong way to depict airflow. It's confusing and misleading, especially after Elon's tweet about two intersecting planes of air. Why not depict two planes on the UI with a giant "plus" shape?
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You mean, more like this... what S does with audio balance.
So here's a case in point about good / bad UI.
Here's a control that moves sound around the car. Suppose you know nothing about the proper way to set balance for car audio and suppose Tesla took a clean slate approach to sound balance...
When you see this audio control, the idea is you stick your finger the circle and move the crosshairs around. This will affect the amount of sound per speaker in those areas. OK easy enough to do.
Scenario: You're the only person in the car driving it.
Question: where should you locate the crosshairs in this scenario for best stereo effect?
Possible answers:
"Don't care" leave in the middle of the car, default, as shown. I never adjust balance since car was new.
"Position sound circle on my head in the driver's seat for best stereo effect in that spot."
"Position it to what is most pleasing to me that takes into consideration of my hearing impairments."
"Position it roughly in the left rear passenger seat floor area... you know, because intuitively that's what produces the best stereo effect for my head."
Which is the right answer for a brand new UI opportunity? What do you think Tesla chose to do?
Are you bound by apathy, legacy, practicality, intuition, ... it would influence what you do on this screen.
Sometimes designers get flashes of brilliance and turn the world on its head.. and might come up with: you move the circle to your head for best stereo sound there. The flash of brilliance did not go off in this case.