The document summarizes how libraries and books have changed over time and need to continue adapting to remain relevant. It notes that for centuries, books and libraries were closed to limited groups of people but that the development of computers and the internet require libraries to change by becoming more accessible online, easy to use like Google, and allowing more interaction like Libraries 2.0 and 3.0. It argues that digital libraries can create a new era for libraries by providing worldwide access to information anytime, anywhere, and for anyone, while still maintaining their roles as knowledge guardians and cultural learning centers.