Hoaxes are a necessary component for believability in UFO's/aliens
Regarding why UFO's have "changed" over the history of the phenomenon.
We've gotten better at reverse engineering...
Quoting: Anonymous Coward 1278763
Here is what is really going on:
Satan and his ilk = Pharaoh
The military/industrial complex = Pharaoh's magicians.
Remember how Pharaoh's magicians reverse-engineered Moses' serpent and other plagues before Pharaoh and the people of Egypt?
This is why there is a tangible/intangible crossover in the history and phenomenon of UFO's. One day you are seeing Pharaoh's technology direct from the source (of deception) and the next day you see his servile magicians coming out with a kludged up nuts-and-bolts lookalike technology.
They are working cooperatively with the military/industrial complex being at the deceived end of the stick.
But here is something you have never considered: hoaxes and fraud are a necessary component of the deception because even Satan and the military cannot produce an illusion that is 100% glitch free and in-your-face tangible.
So they need a compromise: something that is real enough to pass the believability acid test.
Here's how they do it. They remain at a distance until man's technology is developed enough to be able to hoax a UFO/alien event using images and videos. These hoaxes are readily believed by simple minded people without question.
These images and videos are later found to be hoaxes by the more intelligent thinking community who then scoff at the simple minded.
Now the bar for believability is set by the limits of hoax producing technologies.
All the real deception has to provide is a UFO/alien event that is MORE BELIEVABLE THAN THE BAR SET BY THE LIMIT OF HOAX PRODUCING TECHNOLOGIES but LESS BELIEVABLE THAN AN ALL-OUT SCIENTIFICALLY VALIDATED PROOF OF REALITY BY THE SCIENTIFIC COMMUNITY!
The scientific community is willing to meet somewhere in the middle!
It is the middle ground where the UFO/alien deception is to take place!