Adam, Eve, Incest and the idiocy of Answers in Genesis
The creationists' belief that the entire human race descended exclusively from two people living around six thousand years ago is of course impossible for a number of reasons. Genomic evidence confirms humans and apes share common ancestry [1] while population genetics shows that the human race has never been smaller than several thousand people. [2] No amount of appeals to human creeds or 'theological necessity' will change reality. There is also the unpleasant reality that the creationist worldview demands incest, something which is somewhat difficult to square with the laws against incest in Leviticus 18:7-18 and Leviticus 20:11-21. How do the creationists respons? Ad hoc reasoning. They simply assume without any convincing evidence that God had no problems with brother marrying sister.
