Read carefully. Neither me nor bluegatty claimed humans were inherently biased against killing. We claimed that humans were inherently biased against murder - and the universal taboo proves our point.

So your claim is that there is a universal taboo against things that there is a universal taboo against? If your definition of murder is taboo killing, it is very curcular to claim there is a universal taboo against it since by definition it is only murder if there is a taboo. Thus the claim kind of proves the opposite - if you have to limit it to murder then it shows there is no built in bias, as the definition of murder varies from society to society and essentially means killing in a way the society doesn't approve off. There is no possible way for there not to be a bias against murder since if a society is ok with it is ceases to be murder.

> Read carefully

I did, perhaps read my post carefully.

To be fair, it doesn't really seem worth mentioning to say humans are inherently biased against murder, which we then agree is a killing against that society's norms. Because the definitions of "murder" vary so hugely, you're essentially just saying "there is a taboo against breaking the arbitrary rules of your social group."