ACKNOWLEDGMENTS

For useful comments and discussion and assistance, the authors wish to thank Adaobi Adibe, Sam Altman, Marc Andreessen, Christina Cacioppo, Agnes Callard, Bryan Caplan, Greg Caskey, Ben Casnocha, John Collison, Patrick Collison, Natasha Cowen, Michelle Dawson, Alice Evans, Richard Fink, Elad Gil, Auren Hoffman, Reid Hoffman, Robin Hanson, Ben Horowitz, Coleman Hughes, Garett Jones, Charles Koch, Sandor Lehoczky, Kadeem Noray, Shruti Rajagopalan, Daniel Rothschild, Hollis Robbins, Michael Rosenwald, Virgil Storr, Alex Tabarrok, Peter Thiel, Erik Torenberg, Peter Tosjl, and others we surely have forgotten. None of them is responsible for any of these contents.