 This objection, of course, presupposes that the only non-controversial form of composition is the mereological kind and that facts are “nothing more than their constituents”. Armstrong’s and Olson’s facts openly go against these assumptions: they are unities that are more than just the sum of their constituents. But failing to provide further ground for the difference between the sum and the fact makes such facts brute and unacceptable to Vallicella.