[frgoff]

Both are, a priori assumptions, prior to evidence, BY DEFINITION.

All science starts with a priori assumptions prior to evidence. Here's one from Physics:

Every point in the universe follows the same physical laws as the locally observable and testable environment.

There is no way to actually test this assumption experimentally, yet EVERY aspect of physics and astronomy is based on it as a foundational tenet.

[donh]

Every point in the universe follows the same physical laws as the locally observable and testable environment.

There is no way to actually test this assumption experimentally

Say what? How much critical thought have you given this theory?