Why Past History Cannot Be Infinite: There Must Be a Beginning

The evidence from science points to a beginning for the universe. Some atheists, understanding the possible theological implications of a beginning, prefer to set aside science and assert that the past is infinite either in terms of the number of years this universe has existed, or in terms of a fantasized infinite series of universes in a multiverse.

Sean Carroll, in a formal debate with William Lane Craig, suggested that all we have to do is to build a mathematical model of an eternal uni...