The “operation” of matter and life, down to the atomic level, depends on certain constants.
Change those constants, and you change the way the Universe works. Including unimportant things like chemistry, and electrical conductivity. And outside of a surprisingly narrow range. . . life is impossible. . .
Change those constants, and you change the way the Universe works. Including unimportant things like chemistry, and electrical conductivity. And outside of a surprisingly narrow range. . . life is impossible. . .
Some good points. But when we're talking about a possible change in the speed of light, perhaps it happened before life existed on Earth, eh?