"So they thrive on breast milk," Pyra had said to the overseer. "And they can't be taken out of their growing vats. Do you think we servants have time to find that much real breast milk on the market - and carry feeding bottles around all day? Hah! You idiot," she had said. "You might as well pump Lact-X up your big ass and dangle yourself over the vats! ...wait, why are you looking at me like that?"