Sex will lose its appeal; sleep will become a frustrating pursuit.
We will always be tired, even though we will do less and less.
We will think a lot about death.
The persistence of this affliction — and the fact
that it seemed to be heritable — posed
a serious challenge to Darwin’s new evolutionary theory.
If depression was a disorder, then evolution had made
a tragic mistake, allowing an illness that
impedes reproduction — it leads people to stop having sex .