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Systerm Error book cover

System Error: Where Big Tech Went Wrong and How We Can Reboot (HarperCollins, 2021)

System Error exposes the root of our current predicament: how big tech’s relentless focus on optimization is driving a future that reinforces discrimination, erodes privacy, displaces workers, and pollutes the information we get.  Well-intentioned optimizers fail to measure all that is meaningful and, when their creative disruptions achieve great scale, they impose their values upon the rest of us.

Coethnicity book cover

Coethnicity: Diversity and the Dilemmas of Collective Action (Russell Sage Foundation, 2009)

Research on ethnic diversity typically draws on either experimental research or field work. Coethnicity does both. By taking the crucial step from observation to experimentation, this study marks a major breakthrough in the study of ethnic diversity.

A Volume in the Russell Sage Foundation Series on Trust

Inside Rebellion book cover

Inside Rebellion: The Politics of Insurgent Violence (Cambridge University Press, 2006)

Some rebel groups abuse noncombatant populations, while others exhibit restraint. Insurgent leaders in some countries transform local structures of government, while others simply extract resources for their own benefit. In some contexts, groups kill their victims selectively, while in other environments violence appears indiscriminate, even random. This book presents a theory that accounts for the different strategies pursued by rebel groups in civil war.