How Facebook is taking mind reading from sci-fi to reality

The rumblings started months ago. Through a series of peculiar job listings and key hires, it became clear Facebook was up to something unlike anything it had ever pursued. Building 8, as the company would name it, was to be a new division under famed technologist Regina Dugan, former director of the government's Defense Advanced Research Projects Agency (DARPA). Dugan had transitioned to the tech industry in 2012, serving as the head of Google’s experimental ATAP group. Among other things