General Discussion
In reply to the discussion: How Believers in the Paranormal Birthed the Pentagon's New Hunt for UFOs [View all]grumpyduck
(6,686 posts)"absence of evidence IS evidence of absence." Sure, agreed. Up to now.
For many years many people were adamant that there were no other planets out there. Now they've found, what, thousands?
"I can quantify what I would see as proof." Are you saying you would have to see one for yourself as proof?
"What would be proof of alien nonexistence too you?" Taking this question as written, I would require a complete survey of every planet in every galaxy out there.
Do I believe other planets harbor intelligent life? Given the probable number of planets in every galaxy out there, I do. Do I think we've been visited by aliens? I don't know. I'm not aware of any conclusive proof.
AFAIC, UFO = "Something seems to be flying out there, and I don't have a clue what it is."