I asked Earl Cox why fuzzy models work. Elkans' point is that fuzzy logic doesn't obey the law of the excluded middle, nor the law of noncontradiction. The fuzzy logic community's point is that neither does reality. That's why fuzzy logic is effective. Fuzzy Systems Handbook occasionally reaches mystic heights.
More books are in the works.
Earl may have failed as a poet but he succeeds in Fuzzy Systems Handbook as a technical expositor of the first caliber.