[ WP ] A person with a high school education gets sent back into the 1600s and tries to explain science and technology to the people .

`` You see, this simple piece of flint strikes upon the steel rasp to create a spark.'' Jack flipped open the small catch and the arms merchant leaned in, intent. `` In here there is a small charge of powder, a primer if you will, and the spark ignites it and thusly the main charge. Much more reliable than the matchlocks you are using now.'' 
 
 The merchant sat back, already counting chests of coin. Who this `` Jack'' was and where he was from was a mystery. His accent was strange and his manner outlandish and offensive, but the inventions! Every one of them the key to immense wealth, every one of them something that could change the fortunes of nations. Clearly Jack would have to be handled with care - one such as this may shatter an empire with a thoughtless word. 
 
 `` Tell me again about'methane' and its use, Jack.'' 
 
 If nothing else, they would soon be decidedly wealthy men.
