>
>
> Empirical facts are those known through experience, as opposed to
> a priori facts like 2+2=4, known in some other way. There may
> also be a contrast with a theoretical fact, a fact derived from
> the structure of a theory. If that is a valid contrast, the
> constant velocity of c is a theoretical rather than a merely
> empirical fact. --jks
====== What's a non-experience? What is this other way?
Ian
>