Absolutely and I am aware of its origins, but I've seen the analogy brought out at least a few times here on HN when discussing the merits and potential of an idea that seems obvious but has gone unexplored or uncommercialized. I get the sense that there may be some beliefs around the evaluating of ideas, at least in this crowd, that lead some to see it as being comparable to noticing a sum of money on the ground. I'd love to understand that.