Real knowledge is to know the extent of one’s own ignorance. —Confucius What if we are being radically deceived? What if I am no more than a brain kept alive in a vat and fed with stimuli by a mad ...

In past opinions, I have argued that knowledge (justified true belief) is gained by reason-based rather than faith-based thinking. This has generated a recent guest opinion and letters to the editor ...

Knowledge as justified true belief is called the tripartite, or three-part, theory of knowledge. Setting aside any intrinsic value that it may have, knowledge is more useful than mere true belief ...