What technology/knowledge could you bring to the Middle Ages?

[paulpablo]

I do not think you can effectively accomplish anything or change history for the better with something as small as a sentence, or paragraph. It's due to the fact that the default position is to not believe something until proven, and if you compare any time period to another the larger the gap in between the time periods, the more extreme and distant your views become, and the less likely someone is to believe.

I actually thought about this scenario so in depth that I thought about what I'd say to the person I was trying to convince.
Say if I was to talk to the king, I'd say "Do you know how a suit of armour is made and how they forge the metal?"  Then I'd hope he'd say no so then I could say "Well that's how it is in my time with technology, I don't know how all the stuff is made I just know what it does."
I don't know how well my persuasive speech would even work on medieval people, I'd give it a good try though. I'd still draw them a map of the world, tell them about germs and how the black death is really spread. My old history teacher told us once that any child in our class in medieval times would be considered a genius, I don't how exactly how right that is but it might be pretty easy to impress medieval with knowledge we take for granted.