When we read a list of words, are we doing something, or is it something that just happens to us? On the one hand, according to intention-for-action theories, reading can be active only if we do it intentionally, meaning that the action is caused and sustained by the agent’s intention. Many cases of reading seem to be intentional: consider, for instance, when a person is reading a novel, a newspaper article, or an academic paper. Yet, reading often seems to be (...) something that passively happens to us. It is sufficient that a word appears in front of us to make us read it. Numerous studies on the Stroop task – a well-known experimental set-up in the cognitive sciences – make clear that reading is unavoidable, suggesting that reading takes place regardless of the agent’s intention. This tension constitutes the reading puzzle. I argue that if intention is necessary for a process to be active, then intention-for-action theories fail to account for such a distinctive human activity as reading. I conclude that reading represents a real challenge to the intention-for-action theories and shows that what an agent can actively do should not be limited to behaviors that involve intentions. (shrink)