That exception is laughably weak in bleeding edge fields. That is, if "skilled in the art" is limited in audience, then that someone else "did it first" could

That exception is laughably weak in bleeding edge fields. That is, if "skilled in the art" is limited in audience, then that someone else "did it first" could be reduced to them being the first to need to do it. Which is terrible in the cases where everyone that goes down a route will have to solve the same problem.