Libraries are about Freedom. Freedom to read, freedom of ideas, freedom of communication. They are about education (which is not a process that finishes the day we leave school or university), about entertainment, about making safe spaces, and about access to information.

I worry that here in the twenty-first century people misunderstand what libraries are and the purpose of them. If you perceive a library as a shelf of books, it may seem antiquated or outdated in a world in which most, but not all, books in print exist digitally. But to think that is to fundamentally miss the point.

I think it has to do with nature of information.

Information has value, and the right information has enormous value. For all of human history, we have lived in a time of information scarcity, and having the needed information was always important, and always worth something: when to plant crops, where to find things, maps and histories and stories—they were always good for a meal and company. Information was a valuable thing, and those who had it or could obtain it could charge for that service.

In the last few years, we’ve moved from an information-scarce economy to one driven by an information glut. According to Eric Schmidt of Google, every two days now the human race creates as much information as we did from the dawn of civilization until 2003. That’s about five exabytes of data a day, for those of you keeping score. The challenge becomes, not finding that scarce plant growing in the desert, but finding a specific plant growing in a jungle. We are going to need help navigating that information to find the thing we actually need.

Libraries are places that people go for information. Books are only the tip of the information iceberg: they are there, and libraries can provide you freely and legally with books. More children are borrowing books from libraries than ever before—books of all kinds: paper and digital and audio. But libraries are also, for example, a place that people, who may not have computers, who may not have Internet connections, can go online without paying anything: hugely important when the way you find out about jobs, apply for jobs or apply for benefits is increasingly migrating exclusively online. Librarians can help these people navigate that world.

I do not believe that all books will or should migrate onto screens: as Douglas Adams once pointed out to me, over twenty years before the Kindle showed up, a physical book is like a shark. Sharks are old: there were sharks in the ocean before the dinosaurs. And the reason there are still sharks around is that sharks are better at being sharks than anything else is. Physical books are tough, hard to destroy, bath resistant, solar operated, feel good in your hand: they are good at being books, and there will always be a place for them. They belong in libraries, just as libraries have already become places you can go to get access to ebooks, and audiobooks and DVDs and Web content.