The document discusses strategies for building software quickly by standing on the shoulders of giants and leveraging existing open source projects and libraries. It acknowledges common problems like reinventing the wheel and fear of the unknown that prevent reuse. The author advocates looking for existing solutions that match your needs and problems before writing new code, and shares experiences successfully using existing social networking, e-commerce, and push notification libraries to accelerate development. The overall message is that reuse allows you to ship projects faster with fewer bugs by leveraging the work of others.