The "Moorean shift" is a philosophical concept named after the philosopher G.E. Moore. It refers to a strategy used in debates about skepticism, particularly regarding knowledge claims. Moore argued that we can know certain things, like the existence of the external world, by presenting common-sense beliefs as evidence against skeptical arguments. In essence, the Moorean shift involves asserting that if we know something is true, we can dismiss skeptical doubts. For example, by stating, "I know I have hands," one counters skepticism about the existence of the external world. This approach emphasizes the reliability of everyday experiences over abstract philosophical doubts.