Inherent to science are many first principles. Here are some of them.
Humans aren't privy to the axioms of the universe. Even in mathematics, proof is contingent on human-devised axioms.
Therefore, if the actual result of an experiment is consistent with the predicted result, this doesn't mean that the hypothesis is proved. It means that the hypothesis is not disproved.
Even when results are consistently in agreement with a hypothesis, this does not preclude a different or additional explanation.
As noted above, proof is impossible in science. Therefore, one can never be certain that a hypothesis won't someday be refuted.
The scientific method states that if the result contradicts the hypothesis, then the hypothesis is incorrect. If an alternative hypothesis is not known, then it's necessary to search for one.
The scientific method makes no mention of the credentials of the person(s) performing an experiment or anyone else. Validity is determined by whether the result supports the hypothesis, not by who argues for the hypothesis.
As noted above, the scientific method isn't about credentials: it's about whether the result supports the hypothesis.
Science is not about, or at least should not be about, personalities.
An experiment includes taking temperature, pressure, and other readings of the environment to which the matter is subjected. Readings are not taken in the hallway, nearby buildings, or anywhere else.
To take an everyday example, if a home's kitchen temperature rose five degrees in an hour while the overall temperature in the home rose only one degree, the temperature rise in the kitchen wouldn't be attributed to the overall temperature rise in the home.
Given how long humans have done science, one might think that these first principles would be taken for granted. Nonetheless, there is at least one contemporary science concept in which each of the above principles is disregarded:
What is this concept? Climate change.