> Should no one work on the cure for a rare disease because it will provide little value to the world, in comparison to a more common one? Well obviously. We s

> Should no one work on the cure for a rare disease because it will provide little value to the world, in comparison to a more common one? Well obviously. We should invest in whatever saves the most expected quality adjusted life years per unit of resource spent. Investing in rare diseases is just silly and missing a huge opportunity cost. Usually.