Conflicts, Classical and Modern

• consistency v. completeness
• decidability v. undecidability
• bounded v. unbounded
• countably infinite v. uncountably infinite
• Mac v. Windows
• Nikon v. Canon
• grace v. works
• church v. state
• science v. religion
• relativity v. quantum mechanics
• P v. NP
• disestablishmentarianism vs. antidisestablishmentarianism
• HP v. TI
• Linux v. Windows
• "GNU" v. "Linux"
• RMS v. Linus Torvalds
• us v. them
• David Lee Roth v. Sammy Hagar