A businessman struggles with his luggage at an airport and pioneers the wheeled suitcase. An engineer watches people using walkie-talkies and dreams up the mobile phone. A printer is frustrated by his unpredictable inks and creates the Pantone colour system.
Why were these particular people able to identify a problem, and how did they discover the solutions that everyone else missed? Where exactly did their great ideas come from, and how did they go about making them a reality?