AI as doctor, coach and second opinion: what experts expect
October 6, 2026 · 14 min read
Marc Andreessen, Terry Sejnowski, Fei-Fei Li and Chamath Palihapitiya describe AI that helps diagnose, advises patients and assists in surgery, while stressing the role of human judgment. It marks out the medical uses that are close and the ones that remain hopes.
The rules, numbers and steps worth keeping in front of you.
- Near-term medical AI works with a clinician or patient; nobody here predicts removing the doctor soon.
- Sejnowski: doctors and AI each scored about 90 percent on skin lesions; doctors using AI reached 98 percent.
- Sejnowski: the gain came from different expertise, rare cases for the AI and common ones for the doctor.
- Sejnowski: a model right 80 percent of the time is still wrong the rest.
- Andreessen: GPT-4 answers to patient questions were rated equal or better on facts and far better on empathy.
- Andreessen: an endlessly patient machine suits coaching for therapy exercises, nutrition and sobriety.
- Andreessen: the individual should decide when the machine is on or off.
- Li: AI learns from patterns; be careful where patterns are not abundant.
- Li: a human working with a surgical robot beats an under-trained robot alone.
- Li: a chatbot's sympathy comes from data, not from caring.
- Huberman: AI flagged a medication cause a specialist missed, but still go to a doctor.
- Palihapitiya: he expects AI checks of tumor margins in surgery within about two years; his own forecast.
- Use AI as a second opinion, describe everything, and mention your medications.
- Treat any AI health answer as preparation for a talk with a clinician.
This is the short form. The full insight has every expert's reasoning, their own words and the sources.