The concept of information is not a new one; it has been evolving since ancient times. In this key idea, the author highlights the historical development of information from primitive forms of communication to the modern digital age. The author provides a glimpse of information's ancient roots, tracing its evolution from cave paintings to the invention of writing, the printing press, and beyond.

The author illustrates how the early modes of communication, such as smoke signals, drumming, and flag waving, were the precursors to the modern-day digital communication systems. The author also explains how the need to store and retrieve information led to the development of various storage systems, such as the library, the card catalog, and the Dewey Decimal System.

Furthermore, the author mentions the role of key innovators and inventors in the development of information technology. The author explains how the invention of the telegraph, telephone, radio, and television transformed the way information was communicated, making it faster and more efficient. The author also explores the impact of computers and the internet on the dissemination of information.

The author argues that the increasing accessibility of information has led to a democratization of knowledge, making it available to a wider audience. However, the author also highlights the challenges of information overload and the need to filter and prioritize information.

Overall, this key idea provides a comprehensive overview of the historical development of information and its evolution into a digital age. The author's engaging writing style and use of anecdotes and examples make this key idea both informative and inspiring.