I was just thinking that cooperative behavior seems to have pretty good survival value, at least for the life we can find. That, of course, says very little abo

I was just thinking that cooperative behavior seems to have pretty good survival value, at least for the life we can find. That, of course, says very little about life we can't find, since we don't know how different things might be. But it makes sense to me that a cooperative form, where different members of the species can have different but complimentary roles, is likely to be useful even in circumstances we can't predict. And once a species can cooperate with itself, my belief is that it can cooperate with another. All it takes is the insertion of a member of each species into the trust hierarchy of the other species. (Of course, the possibility is far removed from the realization.)