We push our knowledge forward, in order to create the next moment - rather like a dung beetle, with its little bolus of dung! That's all the future is. We create it from our knowledge as we go, pushing it ahead of us. One thinks, "This will really get me places!" It doesn't matter how big the ball is, it's still dung. The dung-ball is like one's little store of knowledge - and one has to leave it by the wayside.