LOMU - system again stopped my reply to you., page-5

Maybe your not too smart after all

https://www.smithsonianmag.com/smart-news/was-speed-light-even-faster-early-universe-180961233/
But that may not be the case. In a new paper published the journal Physical Review D, João Magueijo, a theoretical physicist at Imperial College London, and Niayesh Afshordi, of the University of Waterloo in Canada, explore the idea that the speed of light was different in the past—zipping by much faster in the universe's infancy than it does today.