Coming up with a possible use is a very long way from being able to declare this "solved". There are many such claims. For the idea you discuss, a problem is th

Coming up with a possible use is a very long way from being able to declare this "solved". There are many such claims. For the idea you discuss, a problem is that the projections were balls - not the easiest of things to dislodge loops from, which you would have to do at every step.