2. Product design

2.1 Innovation

The products that industry sells to its customers have been designed to satisfy certain needs; to do this, they fulfil a number of functions. Some of these products, such as the Walkman, Post-it notes or the recent drug Viagra, have changed or are changing our daily lives through their innovative nature. Breakthroughs tells the story of fourteen of them. Hard work, stubbornness, luck and inventiveness are at the root of these innovations, which differ from inventions precisely in the way they go from idea to profitable product