David supports Open Philanthropy with in-depth reviews of evidence on empirical questions, such as “Do alcohol taxes save lives?” and “Does immigration reduce pay or employment for natives?” David worked at the Worldwatch Institute for nine years and the Center for Global Development for eleven. After a time with the Bill & Melinda Gates Foundation, he became an independent consultant in 2014, and soon began working with Open Philanthropy on that basis. He became an employee in 2015. David holds a degree in theoretical mathematics from Harvard, and spent an academic year on a Fulbright in Vietnam.
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