The clips on Case’s makeshift strap dug into his shoulder with the weight of the Ono-Sendai and the Flatline’s construct. All he felt now was fear, a generalized dread. He pushed it away, forcing himself to replay Armitage’s lecture on the spindle and Villa Straylight. He started climbing. Freeside’s ecosystem was limited, not closed. Zion was a closed system, capable of cycling for years without the introduction of external materials. Freeside produced its own air and water, but relied on constant shipments of food, on the regular augmentation of soil nutrients. The Villa Straylight produced nothing at all.