[quote][b]Posted by:[/b] Recon Number 54 The problem is that nearly every modern invention is dependant on others for its continued functioning or repair. Whatever you took back would be an object of wonder while it worked, and then a curiosity afterwards. "They say that one could once make fire with this, but the magic no longer works." Said about a Bic lighter years after the butane ran out. I am trying to think of something that you could take back a single example of and it would be reproduceable and maintainable in the ancient world. I am trying, but not thinking of much. Anyone? [/quote] Yep... it's called disease! Tristan ;-)