Thats unreasonable as we all know its impossible to prove a negative, especially about a as yet hypothetical in a new feild of research.

As for a nuclear reactor in my city, yeah if my friend doesnt have qualifications to make him capable of evaluating the designs of such a technical and esoteric field and someone who is qualified assured me it was fine I would trust them. If we dont trust experts in their fields about their field then we are no better intellectually than the antivaxers and flatearthers