Rocks and a stick? That's a curious way to express Linux, the kernel that is the center of the majority of supercomputers around the world. I've heard it expressed or compared a lot of ways, but I don't think "rocks and a stick" was one of them -- up until then at least. But he's not alone in his way of thinking. I remember a conversation I had with a colleague in 2005 who held the same view and went so far as to stop working with our newly-formed organization. He stated that he would not put his efforts into a losing cause.