What If? Fifty Discoveries That Changed the World

The stories in this book are about people who looked at things and wondered if they could make something else happen with what they saw. They took another look at an ordinary thing and they asked, "What if...?" and went on to do something wonderful. They made an important association or connection. Their What ifs changed your life and mine for the better. There is information in this book about people who invented the ball point pen, ice cream in a cone, hot air balloons, cash registers, French fries, Levis and Jeans, mailboxes, the shopping cart, skyscrapers, and all kinds of useful things that we depend on to make our life better and easier. And if you haven't done so already, start taking a second look at the world around you, and ask, What if? If could be the most important question you ever asked.