 If we look at obligational disputations from the modern logical point of view, it may appear hard to understand how the sequence of answers should be understood. One tempting alternative would be to think that the idea would be to describe a counterfactual situation. As pointed out above, this may be what Kilvington and the anonymous author were aiming at. (See also Spade 1982, 1992, and 1993.) However, the mainstream of medieval authors writing on obligations did not accept their approach.