As mentioned earlier in the thread, auto brightness doesn't work as desired for some. It also has nothing to do with whether this control is implemented correctly, and the wider issue of the two-panel control center.
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What value is there in knowing whether, one single time, you missed a control slider? Should I start a poll, "Have you ever missed the "r" key when typing?" Wow, that would be valuable information to have...
I apologize if you haven't gone to college, but this is very basic critical thinking.