"... there is no evidence of such a technologically advanced civilization. It is an invalid argument from silence. It also violates Ockham’s Razor."
Humankind technology could not in the late forties have an object flying at over 2000 mph make a right turn and stop on a dime. At the recent Citizen Hearing on Disclosure, Mr Callahan who ran the FAA Air Traffic Controller force for a time has radar tracking which indicate just such action.
Now, you can call him and several dozen other MILITARY and CIA people who have testified of such motion/action liars, but it says more about you that you would try to do that to serve some agenda than have an open mind to their honest testimony, world-wide.
In the early fifties, humankind did not have flying objects a mile long, cigar shaped, without external wings. Such craft have been sighted world-wide since the fifties. The witnesses are not all lying.
When the Shah of Iran was still our friend, two of his Phantom jets encountered a very large flying disc over Tehran, which was tracked on airport radar and which was visually sighted by the air traffic controller at the same ariport. When one of the jets was ordered to fire upon the invader of Tehran air space, the plane's electronic gear suddenly shut down.
These are but two incidents of technology beyond humankind abilities at the time which contradict your specious assertion. To deny the reality of something beyond our technological abilities operating in Earth skies since 1947 is to enjoin magic thinking and outright denial. But for what agenda? Trying to squelch reality by using ridicule will no longer work. But you can continue to try it, for whomever you serve.
Humankind technology could not in the late forties have an object flying at over 2000 mph make a right turn and stop on a dime.
***Yes we could. The Harrier had an engine based upon 1940’s technology, and it made a right turn and stopped on a dime.