"The Spice," Dinah said immediately. "It can make you precognitive? Prescient? I don't know what the right definition is. Anyway, Leto said the navigators take it so they can navigate space by just knowing where to go." Dinah rubbed her head. "If you're already inclined that way, I guess it works, opens up your mind. I don't want a job with them though, sheesh."