Dr. Theodore Schwartz pioneered minimally invasive brain surgery—going through the nose and eyelid instead of opening the skull. He's published over 200 papers, written a bestselling book on neurosurgery history, and now he's building a MedTech startup to solve a problem that's plagued him for decades: there's no way to continuously monitor a patient's pupils during surgery. This conversation goes deep. We talk about the psychological weight of knowing you might paralyze 3-4% of patients no matter how good you are. Why it took him 20 years to truly master neurosurgery. The physics problems that keep him up at night. And why he thinks AI will struggle with surgery for a long time—not because of intelligence, but because of how differently humans and computers evolved. We also get into the future of brain-computer interfaces. Ted sits on the scientific advisory board of Precision Neuroscience, and he breaks down exactly how their approach differs from Neuralink and Synchron. Spoiler: it's about electrodes on the surface of the brain, not inside it, and why that might actually be better for getting high-bandwidth data out.