One of the big points against UFOLOGISTS is that, since TV and radio waves travel at the speed of light, why can we not turn on and hear or see Alien radio and TV broadcasts as any estimate puts the number of civilizations in just this Galaxy at millions.

Consider these two facts...

1. Stars that supernova and produce a black hole should produce big ones on straight forward trajectories, yet the massive dominant type of black holes now appears to be planet sized ones wandering chaotically through the Galaxy.
2. All estimates for planets, planets in the habitable aone and planets that are not gas giants are all bang on astronomers projections, yet we never hear from advanced planets.

Now try putting these two strange facts together.

CONCLUSION: Civilizations always advance to a point at the start of space light when they get curious and buld a CERN... which then destroys their planet. In short, all those planet sized black holes wandering around the Galaxy were once civilizations that destroyed themselves with their own version of CERN.