Leslie Lamport, winner of the Association for Computing Machinery's A.M. Turing Award, discuses his classic paper "Time, Clocks, and the Ordering of Events in a Distributed System." He explains the paper's connection to special relativity and his unusual approach of treating mutual exclusion as a physics problem. This clip is taken from an interview conducted with Lamport by Roy Levin for the ACM and Computer History Museum on August 12, 2016 in Mountain View, CA. Video of the full interview is available as part of Lamport’s ACM profile at https://amturing.acm.org/award_winners/lamport_1205376.cfm.