[tyg13]

I don't think that altruism is specific to Christianity. I clarified that in a sibling comment (which you seemed to indicate you had read?), and that what I meant was Christianity specifically requires that good deeds must be purely altruistic. It's not considered true charity to do something with the expectation of any kind of reward. Am I wrong in thinking this is distinctly Christian? I'm genuinely interested.

[svnt]

I’m trying to understand the distinction you are making. Pure altruism exists in animal communities. It is evolutionary. Are you contrasting belief systems with karma with Christianity?