I&#x27;m feeling incredibly bearish on this one. The central nervous system is not meant to be trifled with.<p>There are way too many questions here. What&#x27;s the evidence for this? Two papers by two of his collaborators? How are neurons that have already degenerated in the brainstem due to the Werdnig-Hoffmann Disease going to be rescued? How is he going to reconnect different pathways  between the brain and spinal cord if they have a different spatial distribution? So is the patient going to have the immune system of the donor body - if so, what does that mean for the head? What evidence is there that the visceral organs are going to be correctly modulated by the brain? What&#x27;s going to happen to his collaborator&#x27;s monkeys in a couple years?