Explore the fascinating world of time perception in this 32-minute video lecture by Sean Carroll. Delve into the complexities of how humans perceive time, which differs significantly from the mechanical ticking of a clock. Discover intriguing facts, such as how we actually live 80 milliseconds in the past despite our perception of the present moment. Examine biological networks in various organisms, cultural approaches to time, and methods for quantifying these perceptions. Investigate how the brain measures time, the role of brain pulses in temporal perception, and the impact of sensory input and focus on our experience of time. Learn about memory formation, question the existence of the "present" moment, and understand the implications of the Stanford Marshmallow Experiment on time attitudes. This thought-provoking lecture, part of the "Mysteries of Modern Physics: Time" series, offers a mind-bending journey into the nature of time and human cognition.