&gt; it doesn&#x27;t make sense to me how something could be described as infinite (density) and finite (time) at the same time.<p>The sequence A_n = 2<i></i>-n = 1, 1&#x2F;2, 1&#x2F;4, ..., has infinitely many terms, yet a finite sum 2.<p>Different properties of a thing are different after all.