Our understanding of other minds: theory of mind and the intentional stance

Psychologists distinguish between intentional systems which have beliefs and those which are also able to attribute beliefs to others. The ability to do the latter is called having a 'theory of mind', and many cognitive ethologists are hoping to find evidence for this ability in animal behaviour. I argue that Dennett's theory entails that any intentional system that interacts with another intentional system (such as vervet monkeys and chess-playing computers) has a theory of mind, which would make the distinction all but meaningless. This entailment should not be accepted; instead, Dennett's position that intentional behaviour is best predictable via the intentional stance should be rejected in favour of a pluralistic view of behaviour prediction. I introduce an additional method which humans often use to predict intentional and non-intentional behaviour, which could be called the inductive stance.