There is no doubt that I, also, had long been aware of the problem, i.e. producing X-ray interferences, before the inherent difficulties had finally been surmounted.
One of the issues I kept saying to my students is you have to learn to interrupt. When you raise your hand at a meeting, by the time they get to you, the point is not germane. So the bottom line is active listening. If you are going to interrupt, you look for opportunities. You have to know what you

