[User23]

> clear evidence [x2]

Don’t just tell us there’s evidence, share it please. This is a site for satisfying intellectual curiosity.

> it improves in-group trust and collaboration

Merely improving in-group trust and collaboration doesn’t meet any kind of acceptable moral bar. Viking raiders had high in-group trust and collaborated extremely well, while raping and pillaging to their hearts’ content. Unless you accept raiding as moral, you’ll have to do better.

> Experiments also show that even 2 year old humans and a number of animal species have clear moral thinking.

This is a risible claim to anyone who has any significant experience with two year olds. It also contradicts your first sentence.

Edit: Three replies to a single comment inside half an hour conclusively indicates emotional rather than rational posting, especially since not a single one of my queries was responded to. One would think after all these years I'd be desensitized, but I never fail to be a little bit disappointed when I encounter someone who is incapable of dialectic, and, to make it worse, covers for it with puerile rhetoric. On the plus side, this does neatly illustrate the point of the submission.

[mbrodersen]

I don’t think you understand what morality is. People can believe they are highly moral while killing “evil” outsiders (by their moral code). Religious organisations that declare themselves to be highly moral and follow the moral codes of a bible have historically had zero problems killing, burning and torturing people with different moral believes. Morality is a set of rules that a group of people (or an individual) choose to follow. There is no “universal” or “given by nature” morality. However morality is extremely useful in helping groups of people corporate and fight external groups. That’s why different moral codes from different culture/religions tends to be similar because they all help groups to collaborate and survive threats from external groups.

[mbrodersen]

Your arguments are flawed. I don’t have to accept raiding as moral for my arguments to be true. For example, many Americans followed a strict moral code, inspired by and based on the Bible, while happily owning slaves and hanging non-white people from trees if they dared to object to being slaves. A clear example of in-group morals and non-morals directed at an out-group. I am sure those slave owners had a strong sense of justice and fairness to people in their own group but none towards other groups. Exactly like the Vikings.

[mbrodersen]

> doesn’t meet any kind of acceptable moral bar

Says who? Backed by what empirically true evidence? The Vikings had a strong moral code. That’s why they worked so efficiently as a group. They believe in justice and feared their gods. While raping and pillaging.