Earlier quoted context omitted.
Good example but in most real world cases choice will be to keep one point to themselves and give away between zero to one point to the group out of that one point. Now selfish behaviour kicks in as every individual wants to give as little as possible. But survivial of the group becomes crucial in face of an adversory. In that case everyone will contribute towards maximising group's strength. So in my understanding n…
But can it still be called altruism? Imho, helping out the group to preserve yourself disqualifies it as such; the selfish aspect is clearly there.
I think that I might go as extreme as to say it is only altruistic if it makes you feel bad or puts you in a clearly bad position.
Let's say that out of an act of altruism you help a person achieve some goal of theirs. Now you do not have a material gain from this, but doing so will make you feel good, hence you did it to make yourself feel good?