A. It's a shitty argument. Morality comes from evolution. Most animals have some sort of social structure. It helps us survive as a species. If we just raped and killed anyone we wanted to we wouldn't survive very well would we? It is extra apparent that genes control things that we consider morality when you consider the example of the dog. We've bred some dogs to be uber-friendly and harmless and we've bred some to be attack dogs.
B. Willam Craig is an asshole. He argues against his own position to try to win debates. The best example of this is his debate with Bart Ehrman where he tried to use the Gospels as a historical documents, claiming that one was the most valid and the other (contradictory ones) shouldn't be considered. This is despite the fact that he considers them without error. In his debate with Christopher Hitchens he uses similar tactics. He wants to win a debate rather than be honest about his position. I guess being slimy and dishonest are Christian virtues. (Duh)
B. Willam Craig is an asshole. He argues against his own position to try to win debates. The best example of this is his debate with Bart Ehrman where he tried to use the Gospels as a historical documents, claiming that one was the most valid and the other (contradictory ones) shouldn't be considered. This is despite the fact that he considers them without error. In his debate with Christopher Hitchens he uses similar tactics. He wants to win a debate rather than be honest about his position. I guess being slimy and dishonest are Christian virtues. (Duh)