So not trying to start a religious debate or anything, I was just having a convo with my step-mom, and we came to the conclusion that down the line we are all from an incestuous relation. Because if you are religious and believe that we come from Adam & Eve than it means that when those two had children, the children slept with each other to perpetuate the line. And if you are not so religious and try to go with the story of evolution then our common ancestor is Lucy. But here is the big problem who did Lucy had a kid with, and if by some miracle they was another monkey with her than still all their children slept with each other.
So what do think ? anyone ?