Back in time to 100 BC, what knowledge would you impart to the people?
noonespecial: "I am, probably was, the sandwich maker for a small tribe. It was a bit embarrassing really. When I first arrived, that is, when they rescued me from the wreckage of this super high-technology spacecraft which had crashed on their planet, they were very nice to me and I thought I should help them out a bit. You know, I'm an educated chap from a high-technology culture, I could show them a thing or two. And of course I couldn't. I haven't got the faintest idea, when it comes down to it, of how anything actually works. I don't mean like video-recorders, nobody knows how to work those. I mean just something like a pen or an artesian well or something. Not the foggiest. I couldn't help at all. One day I got glum and made myself a sandwich. That suddenly got them all excited. They'd never seen one before. It was just an idea that had never occurred to them, and I happen to quite like making sandwiches, so it all sort of developed from there.'I'd tell them the same thing I tell people now. What you think you know, you don't know. There is more to learn than you can possibly imagine, and, most importantly, there's nothing like a good sandwich.