Neither altruism nor cooperation are necessarily unreasoned and unplanned . I quickly agree. But neither are they necessarily premeditated. The intentional actions of the agents give rise to functional, unaware collective phenomena . I agree, but hasten to add that not all behavior is instrumentally motivated.
Cooperation emerges from the reflex of the past in the mirror of the future.
Certainly, I do not claim that human beings are not capable of anticipating the future. Even pigeons anticipate the food pellet when they press the lever. And quite clearly, the anticipated benefits of reciprocity may explain why cooperation in Prisoner's Dilemma requires that the game be repeated. Indeed, that is the conventional wisdom. But mostly we do not think before we speak, we just talk.