It has been speculated that the government has this aircraft in
Area 51. Of course, everyone has heard that story, how the
government is doing tests on aliens. Just watch to movie
Independence Day.
However, I recently heard one story that is ridiculous. Some people postulate that engineers could never come up with the designs and systems in
modern-day aircraft without unlocking the secrets found from the
Roswell crash. This sounds like something dreamed up by
Erich von Däniken.
I think we should give people some credit. Perhaps we are a smart
civilization capable of amazing breakthroughs in the area of
flight. It doesn't immediately have to be attributed to
aliens. Another thing, how could we even understand the
alien craft. It would be similar to taking a television back to the
Middle Ages. The TV wouldn't work, and if it did, there aren't any
channels. But if there were, people would be afraid and call it
witchcraft.