Although each is factually distinguishable from this case, Mancusi provides significant support for a conclusion of good faith effort here, [n13] and Barber has no contrary significance.
If then this body can have no contrary, because there can be no contrary motion to the circular, nature seems justly to have exempted from contraries the body which was to be ungenerated and indestructible.
If therefore that which is primary contains nothing unnatural, being simple and unmixed and in its proper place and having no contrary, then it has no place for incapacity, nor, consequently, for retardation or (since acceleration involves retardation) for acceleration.
(Even in circular movement there is a sort of opposition between the ends of the diameter, though the movement as a whole has no contrary: so that here too the movement has in a sense an opposed and finite goal). There must therefore be some end to locomotion: it cannot continue to infinity.
For example, the category of substance is distinguished from the other categories by the fact that it has no contrary and can successively acquire contrary qualities (Aristotle, Categories 5).
A classification problem that identifies the semantic categories of each component of the text can thus mark for exclusion as potential PHI (or irrelevant information) any element for which it has no contrary evidence.
Quantities have no contraries.
Again, whether we define them as quantitative or not, they have no contraries: for how can there be a contrary of an attribute which is not to be apprehended in or by itself, but only by reference to something external?
If forms were merely posited to explain the compresence of contrary properties in sensible things, then there would be no need to posit a form corresponding to properties (such as water and dirt) that have no contraries.
