In the anonymous al-Nukat wa-l-fawāʾid, a summa of Avicennan philosophy written around 1200, a partisan of Avicenna accuses Faḫr al-Dīn al-Rāzī (d. 1210) of having come under the influence of the reprehensible Leader of the Jews, Abū l-Barakāt al-Baġdādī (d. c. 1165). The reasons for the anonymous author’s antipathy toward Abū l-Barakāt relate to the way Avicenna’s contribution to logic is both pillaged and pilloried in stretches of al-Kitāb al-muʿtabar. The claim that Abū l-Barakāt exercised direct influence over Faḫr al-Dīn is, at least in logic, unlikely to be true. Nonetheless, Abū l-Barakāt’s presentation and methods highlight significant changes in the methods of the later traditions of Arabic logic.