The experimental procedure that would liberate Roxborough from his prison of macroglass and saline was a two-step process. Step one was technological—the subject's mind was wiped with drugs and his brain was remapped by implanting new memories. And also, according to Riese, retroviruses and trypanosomes were used to redistribute the synaptic relationships, strengthening some while weakening others until the actual neuronal map looked like Roxborough's. This step had worked on eight or nine test subjects and was almost routine by this point.