When a particle is observed at some energy the theories that predict that no such particle can exist are invalidated. It fault of the experiment to see somethin

When a particle is observed at some energy the theories that predict that no such particle can exist are invalidated. It fault of the experiment to see something is just that, the experiment has failed. The causality of the failure is unknown, also if you do make the observation then the causality of the observation if unknown; Newton's observations and all the observations made by people who believed in a Newtonian universe were not unobserved when relating came along. I believe that the probabilistic approach to observation and observe to rule out approach in HEP now is a big error.