Bob Goodin is Distinguished Professor of Philosophy at Australian National University. He is Founding Editor of the Journal of Political Philosophy and was General Editor of the eleven-volume series of Oxford Handbooks of Political Science. Goodin's work centres on political theory and public policy. He is co-author of, most recently, On Complicity and Compromise and Explaining Norms, both published by OUP in 2013. Kai Spiekermann is Associate Professor of Political Philosophy at the London School of Economics. Among his research interests are normative and positive political theory, philosophy of the social sciences, social epistemology and environmental change. He is particularly interested in applying formal methods, computational simulations, and experiments to problems in political philosophy. His recent publications have focused on mechanisms of norm avoidance, strategic ignorance and moral knowledge, on information aggregation, jury theorems and epistemic democracy, and on reductionism and holism in the social sciences.

"Let me just say this is an excellent, comprehensive study, systematically arragned by theme, of results that pertain to CJT.As well as bringing together old results and presenting some novel ones, the authors also deploy a mized method approach that combines analytical proofs and simulation analyses to shed light ont heir subject matter."

• 1: Introduction Part I: The Condorcet Jury Theorem 2: The Classic Framework 3: Extensions 4: Limitations 5: Independence Revisited Part II: Epistemic Enhancement 6: Improving Individual Competence 7: Diversity 8: Division of Epistemic Labour 9: Discussion and Deliberation Part III: Political Practices 10: Respecting Tradition 11: Following Leaders 12: Taking Cues 13: Pluralism: Differing Values & Priorities 14: Factionalism: Differing Interests Part IV: Structures of Government 15: Epistocracy or Democracy 16: Direct versus Representative Democracy 17: Institutional Hindrances to Epistemic Success 18: Institutional Aids to Epistemic Success Part V: Conclusions 19: The Relation Between Truth and Politics, Once Again 20: Headline Findings, Central Implications 21: Epilogue: What About Trump and Brexit? Appendices A1: Key to Notation A2: Estimating Group Competence by Monte Carlo Simulation

Bob Goodin is Distinguished Professor of Philosophy at Australian National University. He is Founding Editor of the Journal of Political Philosophy and was General Editor of the eleven-volume series of Oxford Handbooks of Political Science. Goodin's work centres on political theory and public policy. He is co-author of, most recently, On Complicity and Compromise and Explaining Norms, both published by OUP in 2013. Kai Spiekermann is Associate Professor of Political Philosophy at the London School of Economics. Among his research interests are normative and positive political theory, philosophy of the social sciences, social epistemology and environmental change. He is particularly interested in applying formal methods, computational simulations, and experiments to problems in political philosophy. His recent publications have focused on mechanisms of norm avoidance, strategic ignorance and moral knowledge, on information aggregation, jury theorems and epistemic democracy, and on reductionism and holism in the social sciences.

"Let me just say this is an excellent, comprehensive study, systematically arragned by theme, of results that pertain to CJT.As well as bringing together old results and presenting some novel ones, the authors also deploy a mized method approach that combines analytical proofs and simulation analyses to shed light ont heir subject matter."

• 1: Introduction Part I: The Condorcet Jury Theorem 2: The Classic Framework 3: Extensions 4: Limitations 5: Independence Revisited Part II: Epistemic Enhancement 6: Improving Individual Competence 7: Diversity 8: Division of Epistemic Labour 9: Discussion and Deliberation Part III: Political Practices 10: Respecting Tradition 11: Following Leaders 12: Taking Cues 13: Pluralism: Differing Values & Priorities 14: Factionalism: Differing Interests Part IV: Structures of Government 15: Epistocracy or Democracy 16: Direct versus Representative Democracy 17: Institutional Hindrances to Epistemic Success 18: Institutional Aids to Epistemic Success Part V: Conclusions 19: The Relation Between Truth and Politics, Once Again 20: Headline Findings, Central Implications 21: Epilogue: What About Trump and Brexit? Appendices A1: Key to Notation A2: Estimating Group Competence by Monte Carlo Simulation

Bob Goodin is Distinguished Professor of Philosophy at Australian National University. He is Founding Editor of the Journal of Political Philosophy and was General Editor of the eleven-volume series of Oxford Handbooks of Political Science. Goodin's work centres on political theory and public policy. He is co-author of, most recently, On Complicity and Compromise and Explaining Norms, both published by OUP in 2013. Kai Spiekermann is Associate Professor of Political Philosophy at the London School of Economics. Among his research interests are normative and positive political theory, philosophy of the social sciences, social epistemology and environmental change. He is particularly interested in applying formal methods, computational simulations, and experiments to problems in political philosophy. His recent publications have focused on mechanisms of norm avoidance, strategic ignorance and moral knowledge, on information aggregation, jury theorems and epistemic democracy, and on reductionism and holism in the social sciences.

"Let me just say this is an excellent, comprehensive study, systematically arragned by theme, of results that pertain to CJT.As well as bringing together old results and presenting some novel ones, the authors also deploy a mized method approach that combines analytical proofs and simulation analyses to shed light ont heir subject matter."

• 1: Introduction Part I: The Condorcet Jury Theorem 2: The Classic Framework 3: Extensions 4: Limitations 5: Independence Revisited Part II: Epistemic Enhancement 6: Improving Individual Competence 7: Diversity 8: Division of Epistemic Labour 9: Discussion and Deliberation Part III: Political Practices 10: Respecting Tradition 11: Following Leaders 12: Taking Cues 13: Pluralism: Differing Values & Priorities 14: Factionalism: Differing Interests Part IV: Structures of Government 15: Epistocracy or Democracy 16: Direct versus Representative Democracy 17: Institutional Hindrances to Epistemic Success 18: Institutional Aids to Epistemic Success Part V: Conclusions 19: The Relation Between Truth and Politics, Once Again 20: Headline Findings, Central Implications 21: Epilogue: What About Trump and Brexit? Appendices A1: Key to Notation A2: Estimating Group Competence by Monte Carlo Simulation