You missed the point. The grandmother hypothesis doesn't contradict what I said at all. If you wanted to model evolutionary processes, you only stick in the r

You missed the point. The grandmother hypothesis doesn't contradict what I said at all. If you wanted to model evolutionary processes, you only stick in the reproductives, because they're the ones that will be producing more copies of their genes in the next generation. As for risking your life for a stranger, evolution doesn't always find the maximum; it often settles in local maxima. If a strategy works 51% of the time, it will persist. And yes, there are more forces at work than biological decent, but I don't see how that's relevant to anything I said. It's so imprecise it can't help but be true. So much for physicists.