 Another critique of the student’s replication of the teacher’s reasoning adapts a thought experiment from Michael Scriven (1964). To refute predictive determinism (the thesis that all events are foreseeable), Scriven conjures an agent “Predictor” who has all the data, laws, and calculating capacity needed to predict the choices of others. Scriven goes on to imagine, “Avoider”, whose dominant motivation is to avoid prediction. Therefore, Predictor must conceal his prediction. The catch is that Avoider has access to the same data, laws, and calculating capacity as Predictor. Thus Avoider can duplicate Predictor’s reasoning. Consequently, the optimal predictor cannot predict Avoider. Let the teacher be Avoider and the student be Predictor. Avoider must win. Therefore, it is possible to give a surprise test.