The very fact that you can cite something as being out of the norm is proof that there is a baseline normality. We recognize something as being wrong because we know what right looks like.
And how ignorant, appealing to genetic mutations that prevent their own replication, and which also amount to less than 0.001% of the total population.
This same issue, genetic mutation causing defects, is also proof that mankind is not descended from monkeys. And yes, liberals do make it hard to believe this, but it is a simple fact: mutations do not cause a rise in new, useful, more complex information, but rather single the organism out for extinction.