  The Doomsday Argument (DA) has sparked a variety of opinions. Here I address
a key question posed by F. Simpson (2016) that confronts the views of DA
proponents and those who, like me, oppose the DA. I agree that typical
locations within a complete spatial distribution are calculable using ordinary
frequentist probability. But I argue that the temporal probability distribution
is unknown: we have records of our past yet are ignorant of our future. It is
this asymmetry that upsets the idea of Copernicanism in time. Although
frequentist methods do not apply to this asymmetric situation, Bayesian methods
do apply. They show that the various Quick Doom and Distant Doom scenarios are
equally likely. I conclude that the DA has no predictive power whatsoever.
