all X is Y there can be no ex-Xs because I said so if all A are B except for U and a few others if all B are < M and M is obvious how do we know where to draw the line the line is obvious once you know how to see it see Spot run C = Spot x run run Spot run how long can U keep Spot running there can be no ex-Xs if C = chocolate chips and W = white chocolate chips and N = macadamia nuts why did Mom like black walnuts so much when is white chocolate white and when chocolate if all X is Y and M is obvious if M is > B 78and the line is obvious then obviously there can be no ex-Xs because U said so