Earliest records of mtersystem travel, both mterstellar and intergalactic, arc of course incomplete, our knowledge is based largely on newly translated files from the Rakis Hoard We know that the beginning of true travel waited for the utilization of the well-established and well-understood phenomenon of spaccfold However, it was not until the polymathematician IV Holtzman developed the area of nonlinear diffeostochastic transformations aid applied them to three-spaced simple modon that the dependency on curvilinear momentum in travel was broken Shortly thereafter the first form of the photoftfaannomc oscillatory engine was developed, allowing a ship to travel in a neobrownian curvature somewhat similar to tile tlme-light-particle phenomenon In turn this development permitted the first trans light portation It became a relatively simple mathematical calculation and computation to write the correct ditfeomorphisms allowing the defmi tion of an absolute neighborhood retract to be applied sequentially to a compact space region This procedure finds the unique fixed point on tile nearest fold sheet of the desired termination space The Polymathematical theory was well developed and even at this early date computational devices were far enough along (though still comparatively embryonic) to allow for the necessary calculations Following die Butlenan Jihad, however spice prescient Guild navigators replaced the proscribed computers, making the whole sys tern dependent on the supply of melange The history of the Impenum is the history of spice and spice was controlled by the Guild The Guild was secure as long as there was spice Thus no group in society paid more attention to the changes on Dune Early in the tenth millennium the Guild became aware ot the me\ liability of an age without the wondrous spice It is no surprise, then, that as early as 10200, discussions had be gun between the Guild and the Ixians The Guild needed to replace the Steersman with out regressing to the danger level of pre-spice portation The goal was a device which could produce the progression lines seen by the prescient Steersman Years of secretive experimentation have been well documented, but they led to no sigmfiuuit progress toward a navigational machine The Ixians had no compunction against using computing devices m their ex penmentations but every concept took them to no better navigational model than that of pre-spice travel In 14132, one of the most powerful Ixian intellects ever to exist, Kunll S Suag (14071 14204) .