We’re on the brink of a future beyond what we can fathom — a future with driverless cars, designer babies, intelligent robots, and digital doppelgangers. Who will you choose to be in that future? How will it change you?

Economist Robin Hanson thinks the era of ems — robots with artificial copies of human brains — could occur in the next century. Read his astonishing predictions … and prepare for your jaw to drop.