What is 80,000 Hours? What sorts of people should become entrepreneurs? How can you run cheap experiments on yourself? What are some beneficial modes of philosophical thinking?Arden Koehler is a researcher and writer at 80,000 Hours, a nonprofit whose mission is to help people use their careers to help solve the world's most pressing problems, and an active member of the effective altruism community. Arden has a PhD in philosophy from New York University, with a specialisation in ethics and attitudes toward time, and a B.A. in philosophy from University of California, Berkeley. You can check out her work at 80,000 Hours, and you can email her at arden@80000hours.org.