It's as simple as ONE TWO THREE:
ONE:
If natural selection kills individuals with
certain
traits, those traits are not conducive to survival.
If a trait is not conducive to survival, individuals without it will have an evolutionary advantage.
Natural selection kills individuals with certain traits.
THEREFORE,
Natural selection furthers human evolution.
TWO:
If those killed through natural selection are
revived, these bad
traits will resurface.
If these bad traits resurface, all beneficial human evolution will stop.
Cloning revives those killed off through natural selection.
THEREFORE,
OR, ALTERNATIVELY,
THREE:
Anything that helps the survival of a species is
good.
Natural selection helps species survival.
THEREFORE,
Since death brings about natural selection, death is also a good thing.
Since cloning inhibits death (and death is good), then cloning inhibits natural selection (which is also good).
THEREFORE,