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ooopppsss... today is tuesday i ought to be tooting about my work in gravity and its related maths
https://foxtrotpaparomeo.wordpress.com/2022/10/28/21september2022-posted-updates-13-general-relativity-reduced-as-11-gravity-workout-sheets-set-1/
or perhaps tooting my shop work in electronics (yeah, i have crude tools one might say from the stoneage but that's my cottage industry)