So all they need to do is build an enormous particle accelerator and the other bits required to turn it into a neutrino source at the Gran Sasso site, and an en

So all they need to do is build an enormous particle accelerator and the other bits required to turn it into a neutrino source at the Gran Sasso site, and an enormous neutrino detector at CERN, and they can go right ahead and do that. Too bad it'll take decades and $billions. Figuring out the appropriate clock corrections very, very carefully seems like a better approach...