This is a shocking statement coming from a scientist who also has a doctorate in philosophy. The truth is that he cannot even explain in physical terms the idea he is expressing. As we point out repeatedly because of the great importance of this foregoing fact, no idea, concept, or conviction is physical. For example, “goodness” is a common idea understood by all. What does it weigh, smell like, look like, feel like, or sound like? Goodness is a concept held entirely in the mind that has no relationship to the physical world. Surely, Pigliucci would deny that he rejects God and believes in evolution because of the physical composition and configuration of his brain. Thus, his very belief that “the world can be explained entirely in physical terms” cannot itself be explained in physical terms.