As is freely admitted, these are not precise categories. Therefore they will not have precise boundaries. One must accept that the truthfullness of P is not a yes or no thing. As N increases, then the truthfullness of P decreases and the truthfullness of not-P increases.

This means, for instance, that baldness decreases with increasing hair. A man with two hairs is very slightly less bald than man with one hair. By the time you get to a man with a hundred thousand hairs, he is not very bald at all. In fact he may be more not-bald than he is bald, and be somewhat hairy.