Why is it foolish to not consider hands I do not think are a part of his range here? If I don't think a player has X hand in his range, I am not going to alter my decision based on the fact that my range may be wrong, I am going to go with my range. Otherwise, what would the point of assigning hand ranges be? If you feel these hands have a good enough chance of being in his range here , that is a different story altogether, and no point in arguing over it as neither one of us has good enough of a read to say who may be right and who may not be. To me and my interpretation of the situation, they are unlikely enough to exclude them from his hand range, and therefor I do not worry about them when regarding river action.