"What Is Time?" offers a comprehensive overview of the nature of time across multiple disciplines. The conversation, featuring hosts Maya, explores how time has been conceptualized, starting with ancient philosophy—discussing thinkers like Parmenides and Augustine who questioned whether time is real or merely a measure of change. The script then transitions to modern physics, contrasting Newton's absolute time with Einstein’s theories of relativity, which establish that time is elastic and interwoven with spacetime, affected by gravity and motion. Finally, the discussion incorporates thermodynamics (explaining the "arrow of time" through entropy) and quantum theories, concluding that while our subjective feeling of time’s "flow" might be a neurological construct, the objective structure of time (like causality and duration) is demonstrably real.