Let's say you're in a situation where all knowledge of modern science and technology is lost (you've been sent back in time, say), and you only have a single poster-sized piece of paper to record the important bits. What would you put on there? This poster doesn't do a bad job at all (click to enlarge):
The unknown author has a weird obsession with claiming credit (as opposed to, say, wealth or survival) but the science is spot-on. It could use more Central Limit Theorem, though. Pick up a poster for your next time machine trip at the link below.
Topatoco: Time Travelers Essentials Print
