 Talk of content clearly has some intuitive basis. We can talk about what someone thinks (believes, intends, doubts, etc.) and regard this “what” as remaining the same on multiple cases, with multiple subjects: this we may call the content of thought (belief, intention, doubt). But once we raise questions about just what this repeatable “what is thought” amounts to, and what makes it the same or different, “content” becomes a highly contentious theoretical term. It can be unclear what assumptions lie behind its use by various philosophers, and whether they have the same sort of thing in mind.