Nano specifics aside, we can already feed people intravenously. We do not yet know how to electrically trick the brain in any meaningful and safe way. I might

Nano specifics aside, we can already feed people intravenously. We do not yet know how to electrically trick the brain in any meaningful and safe way. I might also be crossing the streams on partially remembered text, but I believe the nano component of the blood was about engineered hemoglobin that was a more effective oxygen carrier, not glucose.