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John, I love your posts. Some of them are quite beyond my level of understanding but they always exercise my brain for which I am thankful. You are my math and physics Guru.

The syllable gu means shadows

The syllable ru, a person who disperses them,

Because of the power to disperse darkness

The Guru is thus named.

— Advayataraka Upanishad 14—18, verse 5

Your post about timekeeping reminds me that time as we understand it at the basic level is a human invention measured by speed and distance and all celestial bodies including flotsam and jetsam have their own time relative to their orbit and spin, etc., and so the only stationary point must be Heaven and the time in heaven must always be "now."

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