Give lentils to immunize people, provide free bed nets, deworm children.

You know how to immunize kids, you know how to give bed nets.

If we immunize 960 of them, it's as if we had immunized a hundred percent of them.

So, if we have a population of a thousand people, and we want to make the population immune to a pathogen, we don't have to immunize every single person.

And I came out of medical school with the impression that if I memorized everything and knew everything, or as much as possible, as close to everything as possible, that it would immunize me against making mistakes.