Meet the "ems" -- machines that emulate human brains and can think, feel and work just like the brains they're copied from. Futurist and social scientist Robin Hanson describes a possible future when ems take over the global economy, running on superfast computers and copying themselves to multitask, leaving humans with only one choice: to retir...

Law is an industry like any other -- cars, books, music. Why is it characterized by a lack of personal choice? In this talk, Robin Hanson describes the bold case for privatizing criminal justice.