ABSTRACT
SOPHIA: It is important to note that when we say “The past is infinite” we are talking about intervals of time, not instants. If time began one hour ago, there are an infinite number of past instants. The number of past instants is infinite regardless of whether or not time had a beginning. But when we say things like “The universe has an infinite past,” we normally mean that there are an infinite number of intervals earlier than the present interval.
