"$10B to help provide vaccines, drugs, bed nets and other supplies in developing countries created an estimated $200 billion in social and economic benefits." google.com/amp/s/www.wsj.…
That's just one example of an optimization analysis. How can impact be optimized?
"Warren is scanning the world trying to get his opportunity cost as high as he can so that his individual decisions are better.”
Philanthropic decisions are made in this way by Bill Gates: gatesnotes.com/About-Bill-Gat…