Binary logic

Other (objects, etc.) concept

Plays with the concept of binary logic, where things have only two alternatives with nothing in between. Commonly involves extremists who think you're either with them or against them.

Extremists and robots are common, with the former treating anyone not on their side as the enemy (making them free game for pillage and abuse) and the latter in the sense that robots fail to understand variations of truth or conflicting info (would indicate a very poor programming).