Just what is a pipeline in the computer science sense? We asked Computer Science guru Professor Brian Kernighan Why Asimov's Laws of Robotics Don't Work: Brian Kerninghan on Bell Labs: Don Knuth on Email: Computer That Changed Everything: This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: Computerphile is a sister project to Brady Haran's Numberphile. More at