The resulting explosion wipes out Tio Holtzman's labs; the slave revolt is eventually brutally crushed. Meanwhile, Norma, due to her heritage as daughter of the main Sorceress of Rossak Zufa Cenva, finally taps into her latent powers under great pressure (precipitated by her capture and subsequent torture by the Titan Xerxes) to become the spearhead of humanity. She envisions a future in which massive ships transport goods and humans instantaneously across the universe, using the Holtzman effect to fold space. Norma's ships are the first of what will later be known as heighliners, and her family uses their monopoly on such travel to found the Spacing Guild. As for the slaves on Poritrin, a small band of Zensunnis steal the first space-folding ship and flee to a lonely desert planet called Arrakis, where they will join the followers of Selim, and become the Free Men of Arrakis. Finally, the remaining Titans take their chance becoming independent from their machine master Omnius on the planet of Bela Tegeuse. "Dune: The Machine Crusade" debuted at #7 on "The New York Times" Best Seller list.