Silence may seem natural, but in many cases it is the result of human intervention. This episode traces the chain of changes that made it possible to control sound—from the rise of urban noise to the development of solutions such as soundproofing and headphones. As these innovations connect, they transform the way we inhabit spaces, work, and relate to our surroundings. What was once an environmental condition can now be designed, isolated, or even personalized. A story in which silence ceases to be absence and becomes a construction.