Re: Age of the universe
In the ultimate, it is very hard to distinguish distance from time. You can say that distance is something that is defined by "how far" something goes in a given time or time is a measure of "how long" something takes to go a given distance. Even things like atomic clocks fall victim to this since they rely on counting the number of oscillations of something that is produced by a transition of the wave function of an electron through a distance. But how long is the distance? Well it is one that produces a given number of waves in a given time. And there you are back to ground zero. About the only potentially independent definition of length is the Plank length, but even there, it is defined in terms of time.
I would continue at length, but I do not have the time.