The physicist and the historian discuss the nature of truth as theoretical models of the universe become increasingly difficult to test

So we must ask ourselves: Is this question — whether or not space is finite — even a scientific one? If it’s forever beyond our realm of testing, is it science? Is it metaphysics? Is it even an important question?


In many ways the ultimate paradigm shift is for us to define what kinds of questions we consider within the domain of physics, and within the domain of science in general.