 These disagreements notwithstanding, the main tenet of TT is clear enough: attributions of mental states to other people are guided by the possession of a Theory of Mind. For example, if I know that you desire to buy a copy of The New York Times and I know that you believe that if you go to News &amp; Booze you can buy a copy, then I can use the Law of the Practical Syllogism to infer that you will decide to go to News &amp; Booze.