The whole concept of original sin is nothing but a myth if evolution was God’s way of “creating” mankind.
JM: Why must it be a myth? Many Christians, including myself don't understand why this is the case. In fact, the Catholic Church, the Lutheran Church, the Methodist Church and the Jewish church are some who have officially declared that evolution is no threat to God as a creator or the concept of original sin. If Adam is figurative for the behavior of mankind in general, then the concept is not flawed. In fact, not only does it preserve the concept of original sin, but it is also fully compatible with science as we know it today.
Cheers
Joe Meert