Why Do Your Shoelaces Come Untied? (video) University of California - Berkeley Share Print E-Mail Loading video... Caption This is a slow-motion video of a shoelace coming untied. Credit UC Berkeley Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.