"By almost any metric, our practice of locking large numbers of people behind bars has proved at best ineffective and at worst a national disgrace. According to a recent Pew report, 2.3 million Americans are currently incarcerated—enough people to fill the city of Houston." The Atlantic reports on new electronic gear allowing convicts to live outside prisons while being monitored electronically by authorities. "Not only might such a system save billions of dollars annually, it could theoretically produce far better outcomes, training convicts to become law-abiders rather than more-ruthless lawbreakers."