So, Tex, Tell me again the one-way speed of light? Einstein couldn’t nor wouldn’t try. He understood that we can only derive a round trip SOL, so knowing just how light acts in reality, is, well, beyond us. A convention agreed upon because knowing, not just assuming, is not possible given both technology and constraint. All of the facets of physics simply tell us, “whoa, there fella, my secrets are mine”.
“In the Beginning (of time)... God said, “let there be light, and light was””. Ought to make us think about light in a different, well, light.
And, to those who will say it has to be uniform, the correct answer is no, it only has to be seen as consistent from application to application, and observation to observation.
Most of astronomy has passed from observation to supposition and assumption; and, heaven help us, consensus.
But I defer to those who spend much more time on the subject, as to breadth of training and assumption, not truth, necessarily.
“So, Tex, Tell me again the one-way speed of light? Einstein couldn’t nor wouldn’t try. He understood that we can only derive a round trip SOL”
Do some homework and then come back and we can discuss.