[Stultis]

O.K., to clarify, I am using following definition of proof: "A theory is proven if it can be demonstrated (however you may choose) that it entails its own truth." It is in this sense that I claim that scientific theories are not and cannot be "proven". I am confident that virtually all reflective scientists and philosphers would agree in this. Indeed you seem to agree in this. You are using a different definition of "proof," which is fine insofar as used consistently.