You get ideas from daydreaming. You get ideas from being bored. You get ideas all the time. The only difference between writers and other people is we notice when we're doing it.
“Duke came to us. They volunteered to come to us and made a number of suggestions to some people on my staff. I don't know how I would characterize them, but there have been some discussions going back and forth between Duke and members of my staff.”
“Have we so soon forgotten those four years of terrible carnage, the greatest war of all time; forgotten the millions of men who gave their lives, who made the supreme sacrifice and who today, beneath the soil of France and Belgium, sleep the eternal sleep?”