Ariadne is the Greek mythological character who provided her lover Theseus with a spool of thread to exit the Labyrinth, a maze he had to enter to kill the Minotaur, a half-human, half-bull monster. By doing so, she saved her lover from a certain death, and she surpassed Deadalus the genius architect of the Labyrinth. Today, Ariadne's thread saves lives in aviation and other safety-critical environments by requiring that one or more "Plan B" be ready to kick in for each failure known to have happened in the past, or likely to be happening in the future. Always required, often overlooked, Ariadne can often be embodied and implemented easily. It provides useful guidance towards designing certifiable autonomy. Eric Feron Professor Electrical, Computer Engineering, and Mechanical Engineering King Abdullah University of Science and Technology Saudi Arabia To ask the speaker a question, click on the speech bubble icon in the lower right hand corner and type in the question in the window that pops up. The question will be sent directly to us. Please note that there is a little bit of a delay when streaming. What participants see is a few minutes behind what is happening at our end. The longer we stream, the greater the delay may become so the questions submitted at the very end may not reach us in time. The best way to get the questions answered is to send them as they come up.