 Dennett interprets Grice as concluding that only those being who can entertain a third-order belief (e.g., “I think that she thinks that I think”) can be communicators (Dennett 1987). That would entail that only creatures who have a theory of mind, and can think about others’ mental states, are able to communicate. More recently, philosophers have objected to the high cognitive requirements for communication, in part by noting that children and animals often appear to be communicating, expressing their thoughts and feelings, or exchanging information in a purposeful way. Current research also takes seriously that communication need not be limited to the verbal domain; communication can occur through gestures and other bodily movements, touches, and at least in some species, through the flexible release of chemicals.