He came and went, mostly posting his Youtube videos of a water tunnel he used to test models. Google's search doesn't find his posts here.
Here's his Youtube channel: https://www.youtube.com/@RotaryRebuilder
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.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
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.Because much of what is in the published literature is nonsense,
and much of what isn’t nonsense is not in the scientific literature.
-- Sabine Hossenfelder
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