Which is why I said define arbitrary earlier. I believe it had to do with accuracy of measurement equipment in the 1950’s as well as the ephemeral time scale, which was based on the observed movements of astronomical entities. So you can kinda argue either way. The selection of units can be influenced by an older system like you said, but that still is a system that was based on an observable or measurable phenomenon, which doesn’t fit the definition of arbitrary.
Maybe those planets/stars in the cartoon were aware of their own non-linear travel, as well as red/blue-shift effects, and that we earthlings based our original systems of measurement on them without prior knowledge of those factors, thus making them inconsistent and arguably arbitrary haha
Which is why I said define arbitrary earlier. I believe it had to do with accuracy of measurement equipment in the 1950’s as well as the ephemeral time scale, which was based on the observed movements of astronomical entities. So you can kinda argue either way. The selection of units can be influenced by an older system like you said, but that still is a system that was based on an observable or measurable phenomenon, which doesn’t fit the definition of arbitrary.
Maybe those planets/stars in the cartoon were aware of their own non-linear travel, as well as red/blue-shift effects, and that we earthlings based our original systems of measurement on them without prior knowledge of those factors, thus making them inconsistent and arguably arbitrary haha