> It tells you how fast you're going, how much fuel is left, and how much you are late. That's all you need to know.

— https://www.youtube.com/watch?v=Bo2pUimR_G4 , 03:50, Jeremy Clarkson

interface-design

good thought (?) in context of #measuring-learning-progress also; if doing something like a Skillometer....KISS; focus on key values

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