ord Often, the stimulus "triggers" were produced by a being generated in the same axolotl tank This aiitonomic conditioning occasioned one of the major, unexpected breakthroughs in ghola development Having conditioned Hayt to assassinate Paul Atreides (and per haps gain gholas of Paul and Cham) at the sound command of his tank-mate, Bijaz, the Bene Tleilax created a psychic conflict between Hayt's/Duncan's compulsive loyalty to the Atreides aad his assassin conditioning The agony produced by this clash of drives, combined with Hayt*s training as a Zensunm mental and philosopher, restored Idaho's memories to Hayt' m a sense, he re-became Duncan This psychic reawakening through primal confrontation produced results so valued by Lett) H that although the technique was not consistently successful, it was always attempted, and was used to activate a series of Duncan-Idaho gholas throughout the reign of Leto II Prior to this breakthrough, gholas who needed to know their past for^ particular situations had to be instructed by traditional methods, which at best succeeded only partially because complete knowledge of the ghola1 s past life could never be gathered Hence, the ghola's memory was bound to be defective in many areas The use of melange with its memory-stimulating properties could fill these gaps somewhat There is evidence, for example, that Piter de Vnes, Baron Vladimir Harkonnen's twisted Mental-Assassin, a Tleilaxu product, was a melange-stimulated ghola who became addicted in training Of course, de Vnes' addiction may simply have expressed the Tleilaxu quirk of delivering gholas with some unexpected quality of char aclenstic that the buyers did not specify e g , Hayt s metal ejes * By the fifth century of Leto II s reign the method of making gholas had radically changed Instead of regenerating original flesh the Tleilaxu cloned their later products great ly improving the productivity of the axolotl tanks (as they were still known despite their extreme modifications)2 Cloning was the superior method because cadavers often resisted regeneration for many reasons The rate of memory reawakening however was never above twenty percent The trauma of the stimulus, such as the assassination of a Face Dancer in the guise ot Paul Atreides bj the Duncan Idaho ghola more frequently shattered psyches than restored memories This excuse was offered by the Bene Tleilax for their delay in producing yet another Idaho ghola at the end of Leto II s reign However, some speculate that the dela; was part of a plot orchestrated by the Bene Tleilax Ixians and Bene Gessent to destroy the God Emperor and that this last Idaho ghola was the most subtle example of conditioning ever produced, conditioned to respond to Hwi Noree s phrase "I want to hurl myself into your arms, to find the love and shelter I know is there You want it too 3 This argument is lent credibility by evidence of Tleilax cooperation in the Ixian production of H\u, but the use of the Ixian Gl