Tim Harford tells the fascinating stories of inventions, ideas and innovations which have helped create the economic world.
Tim Harford tells the fascinating stories of inventions, ideas and innovations which have helped create the economic world.
Surveillance cameras were invented so Nazi scientists could observe rocket launches from a safe distance. They've come a long way since then, and are gathering more data about us than ever before. But in a world where millions happily carry smartphones in our pockets, how do we really feel about being watched?
