Prophecy S01 Mpc !!install!!: Dune:

Wallach IX, 10,148 A.G. (Before the Butlerian Jihad’s scars have fully healed, but long before the rise of Paul Atreides)

“He’s still calculating,” Valya murmured, staring at the dead Mentat’s frozen face. “Across death. Across time. That’s the horror of the MPC. It never stops.” dune: prophecy s01 mpc

Here’s a short story based on the Dune: Prophecy premise, focusing on the protocol—a forbidden, dangerous iteration of Mentat training. Title: The Ghost in the Calculation Wallach IX, 10,148 A