[Guille]

Originally Posted by AntonioLao That's a plausible chemical analogy. How about the speed of light? Is its value the same yesterday, today, and tomorrow?

The quote from Schwinger doesn't tell me what he thinks about that. It might be different the speed of light yesterday from today and from tomorrow, he doesn't say it is not the same nor that it is the same, but he does say that it will not be independent, that is, the speed light of yesterday will be a cause of the speed light of today, even if it is not the same. So this mean sthere must be a pattern which might allow us to make an equation to predict the speed light of tomorrow, and to know the one of today and of yesterday without having to measurem them.