The Problem of Scientism

Fr. Robert Barron does a great job briefly explaining the proper (and good) role of science with respect to contingent realities as well as the existence of God. Science must be pursued because our ability to reason goes hand-in-hand with the intelligibility that imbues the natural world. However, science and the scientific method cannot be used to evaluate qualitatively different types of reality. This is the error of Scientism, and it baffles me that seemingly intelligent and reasonable people keep making this mistake.