Zeynep Tufekci is a computer programmer turned sociologist, whose book Twitter and Tear Gas is coming out in a couple of months. This TED talk is the video parallel of Cathy O’Neil’s book, Weapons of Math Destruction. The core point is the same – that machines we don’t understand, trained on imperfect data, are as likely to be amplifying human biases as to be emobodying objectivity.