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The clockspeed of observation is 18.5 tredecillion Hz
(lemmy.world)
Sometimes we have those little epiphanies in the shower.. sometimes they come from other places. This is a home for those epiphanies.
Except observation would be limited by perception, and we definitely can't perceive the speed of light across a planck length. Even the tools we use to measure these things are just measurements, not direct observations.