I don’t think that that’s true. Mentats themselves work alright without spice or that Sapho juice, though I think that both of these substances expand their abilities. It is Guild Navigators that are immersed in spice tanks for much of their lives.
They get their powers literally from drinking a substance made with spice. It’s explained in the books, and it’s why their lips are stained red (something only the 1984 film actually showed on camera).
I don’t think that that’s true. Mentats themselves work alright without spice or that Sapho juice, though I think that both of these substances expand their abilities. It is Guild Navigators that are immersed in spice tanks for much of their lives.
They get their powers literally from drinking a substance made with spice. It’s explained in the books, and it’s why their lips are stained red (something only the 1984 film actually showed on camera).
No, their lips are stained by Sapho . The first mentats came about just after the Butlerian Jihad, before the discovery of Arrakis and spice.