Calibrating perception to fit desired results in experiments

In science classes, I am all like the results are not appearing as they are supposed to.  And they are like the theory is correct but the equipment needs to be calibrated differently we will have to try again another time.  And I am all like what if the theory is only true some of the time but you are convinced it is true all the time so you calibrate the equipment to get the results you want.  Also the pictures tend to be fuzzy and involve a lot of mental tweaking to fit the pristine results.  Real scientists know the theory should be at best a map for reality and not treated as reality itself other wise you will change what you claim to perceive to get what you are looking for.