Time.

[Rhizomorph13]

Um, Watson,

"As a free-thinker, I can have no term applied to me."

Isn't, "free-thinker" a label?

But the problem with that is that you can't prove it's not just an endless loop of the same says and same nights over and over again. Essentially all you can do is prove that the earth went around the sun one more time, not that it has been doing so for ever and ever.

We also can't prove that we aren't just a brain in a jar being fed stimuli. We can't prove that God didn't speak the universe into being last Thursday. What is your point?

I don't think time exists as a substance, but it is real. The word time simply expresses something that we can measure and those measurements prove to be useful over time(hee hee), so we know the description is functional.

In a lab you can measure time with a stopwatch.

Are you going to move on and ask that we demonstrate in a lab what an inch is next? Or prove that "width", "depth", or "height" is real?

Rhizo