The Religion War (ISBN 0-7407-4788-6) is a 2004 novel by Dilbert creator Scott Adams, and the sequel to his novella God's Debris.

He subsequently uses his ability to recognize even the vaguest patterns (which makes him seem to know more than he actually does) to bypass guards, escape interrogations, and ultimately win an audience with the warring leaders.

However, at the conclusion of the book, the Prime Influencer, who turns out to be an opinionated café owner whom the Avatar had met previously by chance, launches a simple, yet catchy, phrase (If God is so smart, why do you fart?)

One review observes: The second novella, a follow-up titled The Religion War, describes a civilizational conflict in 2040 between a violent caliphate in the Middle East and a Christian alliance in the West.

“I have to be careful, because I’m talking about something pretty close to genocide, so I’m not saying I prefer it, I’m saying I predict it.”[1]Another notes: “In this frenetically paced sequel to Adams’ best-selling “thought experiment,” God’s Debris, the smartest man in the world is on a mission to stop a cataclysmic war between Christian and Muslim forces and save civilization.”[2]