Final answer:
Physicists operate under the assumption that all scientific laws and theories are valid until a counterexample is observed. If a new experiment or observation contradicts a well-established law, it may require modifying or completely overthrowing the law.
Step-by-step explanation:
Physicists operate under the assumption that all scientific laws and theories are valid until a counterexample is observed. Laws can never be known with absolute certainty because it is impossible to perform every imaginable experiment in order to confirm a law in every possible scenario. If a good-quality, verifiable experiment contradicts a well-established law, then the law must be modified or overthrown completely.
This means that the laws of physics are not exempt from exceptions. If a new experiment or observation contradicts a well-established law, it may require modifying or completely overthrowing the law. Theories and laws in physics are constantly evolving based on new evidence and experimentation.