Ethan Zuckerman

Buyers of powerful cars place a high premium on the exhaust note, and manufacturers spend a lot of money getting it right. At the same time, high-end cars are expected to filter out the sounds of the mundane world.

Every time you log in to Facebook, every time you click on your News Feed, every time you Like a photo, every time you send anything via Messenger, you add another data point to the galaxy they already have regarding you and your behavior.