In an argument that the Los Angeles Review of Books calls "unique," Simon contends that because we cannot offer meaningful health care, mental health care, or safe and reasonable prison conditions when prisons are run at many times their maximum capacity, "mass incarceration is fundamentally incompatible with humane treatment."
Todd Clear, former dean of Rutgers School of Criminal Justice, calls Mass Incarceration on Trial "highly readable, stunning," Slate says the book "could mark the beginning of a new era in American jurisprudence," and David Cole in the New York Review of Books calls Simon's work a "sign of the new optimism about criminal justice reform."