2. There are some natural phenomena generated on earth that we can't understand creating optical illusions and even effects that show up on some instruments, along with the mis-identification of things like Venus and conventional aircraft and occasionally secret test weapons.
I like your approach, but the (extremely unlikely) possibilities are more numerous.
I do not believe there is an undetected, intelligent, secretive, advanced life form hidden by our oceans. But I would be hard pressed to prove there is none, given the paucity of research below 1000 feet of water.
Many physicists believe we live in a layered multiverse, and that the physical separation between up to twelve layers is about a millimeter. Hence, the possibility of traveling trillions of miles might be replaced by a technology allowing one to “pop” into and out of another layer/dimension.
As to the thought of a natural phenomenon, the curiosity (and even rare acts of destruction) aimed at our nuclear and military capacity shows a rational, sentient scheme of activity.
God? Did God take the form of a metallic, flying disc in 1964 to shoot down an unarmed nuclear test missile launched and filmed by the US Air Force off the coast of California? I don’t consider it likely, but can’t exclude the possibility.
Could we be witnessing our distant future relatives traveling backward in time with advanced technology? Again, that sounds highly unlikely., but I can’t disprove the notion.
As a professional, I have had many opportunities to represent or work with random folk by the thousands since 1988. Everytime I had a client /friend/neighbor with a military background from the 40’s, 50’s, 60’s I would ask whether they had any unusual experiences with UFO’s.
Most had.
One gent in 1994 told me he had operated a radar unit in the American West in 1953 that tracked an object traveling 3,400 miles per hour. On Dr. Steven Greer’s Project Disclosure films, another gent relates the exact phenomena (including the speed of 3,400 miles per hour) on a radar unit he operated in the same year over the North Atlantic. I asked my client if he reported it up the chain. He laughed and said “hell no!”
I had a neighbor in the 1980’s who guarded a nuclear facility. He related that it was pretty common to have a high altitude object hovering in broad daylight above the silos, which would quickly scamper away when they called in a fighter jet.
I don’t know the who, what, how or why, but one or more of the highly unlikely scenarios must be true.
Any cynic who plays the “word game” of saying we cannot prove scientifically the existence of these things is (1) correct, and (2) being a tad coy.
We couldn’t prove, scientifically, the existence of the giant squid until the 1990’s when a Japanese scientist developed a replicatable means of observation of them in the deep. But we knew they existed from hundreds of years and thousands of incidental sightings, with no “scientific proof.”
