Find out where great ideas come from.
A father cleans up after his toddler and imagines a cup that won't spill. An engineer watches people using walkie-talkies and has an idea. A doctor figures out how to deliver patients to the operating room before they die. By studying inventions like these — the sippy cup, the cell phone, and an ingenious hospital bed — we can learn how people imagine their way around "impossible" problems to discover groundbreaking answers. Pagan Kenn .