Again, the ONLY process that could bring about actual increased genetic diversity is mutation, or the formation of new VIABLE genetic sequences or new alleles. It is claimed this happens. I doubt it.
Of course you doubt it. We know. We also know that you (indeed, anybody) have not been able to come up with a viable explanation for the observed increases in genetic diversity. "A rare allele that hung around for thousands of years before it was needed, even against strong selection pressure" doesn't work.
The mainstream explanation does work.
Edited by JonF, : No reason given.