The Friday letter

Once a week, the version worth keeping: the week's developments, why they matter, and specific recommendations. It goes to subscribers by email on Friday mornings and lands here the same day.

• Sept 12 to 18, 2026The AI doctor's first credential is a billing codeMedicare is working out how to pay for AI care before the evidence is in, and its own AI gatekeeper spent the week showing what that order produces. The fight worth having is over the contracts, not the models.