With the advent of the internet, any topic we want to know about is instantly available with the touch of a smartphone button. With so much knowledge at our fingertips, what is there left for our brains to do? Simon Winchester explores how humans have attained, stored and disseminated knowledge. Examining such disciplines as education, journalism, encyclopedia creation, museum curation, photography and broadcasting, he looks at a whole range of knowledge diffusion – from the cuneiform writings of Babylon to the machine-made genius of artificial intelligence, by way of Gutenberg, Google and Wikipedia to the huge Victorian assemblage of the Mundaneum, the collection of everything ever known, currently stored in a damp basement in northern Belgium. Studded with strange and fascinating details, this book is a deep dive into learning and the human mind.