Michael Nielsen’s notebook

.. and digital books. Are these all “real” books? A teenage part of my mind insists a book is a physical object issued by a distinguished and long-lived publishing house — which would disqualify several of these. But “Quantum Country” and “Neural Networks and Deep Learning” couldn’t exist on paper, and each required thousands of hours, creating a narrative of fifty or a hundred thousand words. “Book” seems right — in its 21st century meaning!