In the Technology section:
POLARIS (THE NORTH STAR) IS JUST ABOUT THE BRIGHTEST ONE IN THE SKY ...
Oh no it isn't!
Reading that, I'm fascinated by the smaller details of technology that so much of that relies on. What someone really needs is a guide to all the tools of whatever time they land in.
Yeah, a lot of that is really pretty useless information - you'd have to find an alchemist to implement it for you. I think that's part of the joke, but I still found myself wondering where exactly I was supposed to get a microscope to look for penicillin. . .
The wing thing won't get any time traveller off the ground, since it's complete BS. Proof: planes can fly upside down.