The Importance of Establishing Concepts Like Measurement and Distinguishing Between Outcomes of an Experiment

It is possible Constructive Theory, as we conceive of it, isn't true. And that somebody invents a theory of physics which violates the principles of Constructive Theory. But I don't think that's going to happen. I think that future theories are going to conform to Constructive Theory - but only if they can be testable in some sense beyond our present concepts.