What happens when the ones who 'hoax' get caught by surprise? Nothing, they just make up a story and take credit for the invention.Great story about the time people found the tunnel system under New York City. We did not build this country people. We are pretty good at reverse engineering though. See Links.https://www.nycsubway.org/wiki/Beach_Pneumatic_Transithttps://sometimes-interesting.com/2012/05/19/first-subway-pneumatic-transit-system/Help us caption & translate this video!https://amara.org/v/VSL6/