Trevor Cox, a Professor of Acoustic Engineering, explores the intriguing realm of silence and how it’s measured, revealing that absolute silence is an illusion. Marta Moita, a Neuroscientist, shares her findings about how rats associate silence with potential threats, hinting at our own instincts. The discussion delves into the dual nature of silence as both a potential alarm and a source of relaxation, depending on context. Marnie’s visit to an anechoic chamber uncovers the unsettling side of complete quiet, challenging our understanding of silence.