  It is in his other works that Tûsî took a more solid stand against substantive changes proposed for Avicennan logic, especially in his Setting the Scale for an Evaluation of “Revealing Thoughts”, an extended assessment of Abharî's Revealing Thoughts (Tûsî 1974b), in which Abharî adopted a number of Khûnajî's positions. Here we find not merely a sympathetic exposition of Avicennan logic as Avicenna would have wanted it to be understood, but a reasoned attack on the thinking behind alternative proposals. Tûsî went on with this project in a series of exchanges with Kâtibî (Tûsî 1974a).