the physical act of reading a book, with its bound pages, helps strengthen the learning of the concepts inside.1 (If you are reading this book in physical form, you may well be able to remember, hours or days from now, where on the page and how far into the book this very sentence was found—a physical memory of your senses from eyes and hands that will reinforce the idea you absorbed at the same time. That experience will be missing if you read it on a digital screen, with no fixed location on a page, no weight of the two halves of the book in your hands, and the idea itself will also be
...more
