Christopher Mims writes Keywords, a weekly column on technology, for The Wall Street Journal. Before joining the Journal in 2014, he was the lead technology reporter for Quartz and has written on science and tech for publications ranging from Technology Review, Smithsonian, Wired, the Atlantic, Slate and other publications. Mims, who has degree in neuroscience and behavioral biology from Emory University, lives in Baltimore. Join him for a live chat on technology, science and innovation on Wednesday January 25 at 1 p.m. If you'd like to participate but don't have Prime, join here.