“…The cross sections O'�'!. tN come out amazingly small (35)(36)(37) and a study of soluble models (40, 40a, 41) strongly suggests that, in spite of the good fits, the method is unreliable and the resulting cross sections O't�tN are meaningless. Incidentally, these models suggest also that the cross sections of vector mesons on nucleons obtained by applying a variant of the method used in (39) to photoproduction are reliable.…”