There are ideas so there are many solutions of this problem. The point is that each one of thes is disconcertingall disconcerting. And let me just give you some ideas about what this solutions are. One is to take very seriously the mathematics self. This wave that is used the mathematical apparatus to predict what happened, its actually the real thing. Another solution is to believe that there is a layer of reality which is sort of underlying what qonte mechanics describe. They are all very costly conceptually. And i think the current situation isa that we really don't know which conceptill cost us better to pay to make sense of the theory.