On this week’s Tech Nation, Moira speaks with Tech Nation’s former biotech correspondent David Ewing Duncan about his new book - “Talking to Robots: Tales from Our Human Robot Future.” Then Dr. Daniel Kraft tells us how robotics are replacing surgeons, and McAfee’s Gary Davis, expands on those massive thefts of online credentials – they are for sale and they are out there … on the Dark Web – yes, he explains that, too.