Actually not correct, words in a lab can mean different things from the popular usage. With Theory being the most popular misconception, as so many people believe that it just means I guess, when in reality it is closer to something we can't test, but if it weren't true so many other things that we can test couldn't possibly be true.

Typically a theory is never proven nor disproven, it is however replaced with a more accurate Theory.

Inside of a laboratory, observation means something less like you saw it, and something more like you measured it. All the observation changing it proves, is that we don't have a method of measuring it that will not interact with it. Which is to be expected given that Quantum phenomenon is legitimately so small that even a microscopic bacterium would say it's tiny.