Comment by didibus

Science is a process, not a source of truth. It has a very practical lens, which is very utilitarian, does the knowledge and models allow for invention or prediction that works in our reality for some current need.

The assumption is, you never really know, but if the model in which the theory says X, is able to predict something in the future or some experiment for Y, than that model appears to better approximate reality. Or is that knowledge and model allowing us to now do something we could not before, etc.

Over time, it course corrects to improve its knowledge and models in ways that show better results for prediction or invention.