This article is from the Scientology and Dianetics FAQ, by firstname.lastname@example.org (Scientology Information Server) with numerous contributions by others.
When one takes the time to understand the ideas and terms in Scientology,
the apparent contradictions disappear. For example, a non-Scientologist
on this newsgroup once said that since Scientologists believe that the
"whole track" or "time track" has been said to be trillions of years long,
and scientists recognize the universe as only being a few billion years old,
then that is a contradiction.
But this is a misunderstanding of the term "whole track." It does not
refer to the "age of the physical universe," but the "age of a spiritual
being." And the physical universe, per the Big Bang Theory, could be
in a cycle of expanding-contracting universes. So who's to say how long
this has been going on (if indeed the Big Bang Theory is even correct)?
So the question again falls back to: Does the human soul exist?