Oh, I see. Perhaps something isomorphic to the following: we suppose Civilization gains $1 billion in value from the results, and we imagine the kids were in a position to negotiate a payment for their services rendered, and we figure they could have gotten $N hundred million, so we decide they deserve that much and divide it among the kids. (Maybe the parents did some actual negotiating, on their own behalves at least.)
Oh, I see. Perhaps something isomorphic to the following: we suppose Civilization gains $1 billion in value from the results, and we imagine the kids were in a position to negotiate a payment for their services rendered, and we figure they could have gotten $N hundred million, so we decide they deserve that much and divide it among the kids. (Maybe the parents did some actual negotiating, on their own behalves at least.)