 For some modern commentators, this impugns an understanding of “probable” as readily affirmable or adoptable. It seems to be a minimum requirement of being affirmable that a proposition x is judged to be more likely true than false, that is, having probability p(x) &gt; 0.5. Since a proposition and its negation cannot both have p &gt; 0.5, they cannot both be affirmable at the same time. The scholastics, of course, did not operate with such numerical considerations. For them, “both-sided probability” (as I have termed it) resulted naturally from the endoxic concept of probability. A proposition and its negation can both be held true at the same time by different  experts.[36]