I'm surprised... it should be easy to gin up UFO sounds... like a helicopter or something.
Or they could have said: in a vacuum, no one can hear you scream...
Because it's more fun than boring old science... wondering and speculating is more exciting than knowing.
Marvin Minsky once wrote an essay: "Why AI can never win". His point was that certain tasks seemingly require human intelligence, beyond machine capability... like chess, for instance... until a program beats a chess master, and people say "oh well, chess is obviously simple, that's not real intelligence, just a trick."
It's the same type of thing - people want to believe in unsolvable mysteries, they want unanswerable riddles. Human nature, what can ya do?
-- Rich
And Wormley is the first in line for a riddle.