In another plot line, an Earth scientist named Affret Shekt has invented a Synapsifier, which reduces the resistance of non-nervous tissue between adjoining nerve cells and improves the quickness and effectiveness of thought. The process by which people undergo the treatment, however, is believed to be dangerous, often fatal. A farm family with whom Schwartz finds himself volunteer Schwartz, who is considered feeble-minded, for the Synapsifier in the hope of rendering him capable of helping meet their farm quota for produce, for they are sheltering from euthanasia the wife's father, Grew, who has suffered a paralysis of the legs. The process makes Schwartz weak and confused, but as he recovers he learns the language quickly and then slowly develops the Mind Touch, the ability to read minds and then the ability to kill with the mind, and finally the ability to immobilize others and even to control their gross physical movements.