After the video of a Chinese farmer's homemade airplane started circulating around the web late last week, commenters on several sites cried hoax, and I received several emails and tweets questioning my mental health for believing such a thing exists.
But the video wasn't obviously fake; home-built airplanes aren't rare, I have no reason to doubt the ingenuity of the Chinese farmer, and I'd rather believe in the wonderfully improbably than be cynical about everything I see. A second video of the plane has been uploaded to YouTube which, in my mind, corroborates the existence of the flying contraption (it's actually an autogyro) beyond a reasonable doubt.