basudeba,
The "fundamental principles" of physics are not static. They evolve as we learn more about our universe. When we realize that we don't know something we wish to know, we need to expand those fundamental principles. We can't do this by basing new theories on the same old principles. We need creative new assumptions, axioms, or postulates. These needn't be based on anything. They are the bases. The theories based on them should make predictions, and if the predictions are correct, the new postulates need to be taken seriously. If they survive test after test over time, they become fundamental principles and we have expanded our knowledge of the universe. That's what I'm aiming for here. I don't think my reasoning is circular, and while my points are unconventional, the model based on them makes known-correct predictions as well as new, testable predictions.