After three years, several hundred interviews and trips that took them from Washington think tanks such as the Brookings Institution to health clinics in Myanmar and rural villages in Kenya, they have narrowed their interests to four major “buckets”: U.S. policy, global catastrophic risks, international aid and science.
Arrillaga-Andreessen, wife of Netscape founder Marc Andreessen and who teaches courses at Stanford about philanthropy, has advised numerous tech billionaires — including Tuna and Moskovitz — about their charitable work.
“The world is a big, complicated system,” Tuna said, “and I feel we need to be as smart as we can be in order to stand a chance of having an impact with the resources we have — which are significant in one sense but really small in comparison to the kinds of the problems we want to work on.”












