Measurement of Laws

SoWhy do scientists measure things? If the theory works, then the philosophy should be useful for application. We like to test our theories and need some sort of criteria by which to evaluate whether we know what we are talking about. The idea of an experiment or a test gives us a subjective counting unit that can be interpreted with a score that measures performance of our test model to real life situations. Tried and true theories are accepted as immuntable laws - such as gravity or conservation of matter.
SoBut are these laws valid under the current conditions? Did we take the time to identify and validate the assumptions that went into the derivation of the theory? Did we integrate new information that was added since the previous tests? Does the idea pass the sniff test - does it make sense with what we already know? Did we control all the variables involved so that we are measuring apples with apples?
YoIsn't it time to hold people responsible for their actions by asking some of these questions when things no longer make logical sense? What about beyond the science domain?