“I move into the room and shoot at the clone with my machine gun,” my friend says.
“You can’t,” I say. “There’s a wall in the way. You need a clear line of sight to shoot your target.”
“What? You didn’t tell me that! If I had known, I would have done things differently!”
“I guess you should have read the rules beforehand,” I mutter.
This is a common exchange in my house while trying to teach people how to play a game for the first time.