“When exactly does an observation occur? ... What were the laws of physics doing before there was anyone measuring things? And what do you mean by a measurement, anyway? Does it have to be a consciousness human being? ... Can a rock or a virus or an earthworm do an observation?”

— Sean Carroll

[The Many Worlds Theory, 24 October 2018, YouTube, https://www.youtube.com/watch?v=iXRLDatmbgA] (12:16 of 56:11)

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Sean Carroll 10

American theoretical cosmologist 1966

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“When exactly does an observation occur? ... What were the laws of physics doing before there was anyone measuring things? And what do you mean by a measurement, anyway? Does it have to be a consciousness human being? ... Can a rock or a virus or an earthworm do an observation?”

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Sean Carroll 10

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