I have seriously had this fight with more than one Christian.
Random Christian: Evolution can’t happen because of the second law of thermodynamics, it says that in a closed system things will break down.
Me: The Earth isn’t a closed system though.
Random Christian: WHAT?!?! But my pastor told me this is a knock down argument to beat all evolutionists, you must be wrong.
Me: We have energy provided to us by the sun and not only that but we also often encounter space debris and other material that comes from “outside” of our system.
Random Christian: Yeah but if we came from monkeys how come there still be monkeys around!
Me: You are how the terrorists win….