dt/dt Is 1
One person marvels at how fast time moves; the other notes that time's rate of change with respect to itself is exactly 1.
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Free for classrooms, worksheets, slides and other non-commercial use under CC BY-NC 4.0, with credit to Ben Orlin.
Cartoon by Ben Orlin, Math with Bad Drawings. https://cartoons.mathwithbaddrawings.com/2018-06-22-dt-dt-is-1/ (CC BY-NC 4.0)Transcript
A: "Time sure moves fast, doesn't it?" B: "Well, dt/dt = 1. So... kinda regular speed."