At O’Reilly Media’s Tools of Change for Publishing conference in New York this week, book industry dreamers and doers gathered, as they do every year, to learn how to capitalize on the incredibly disruptive force of digital media. This year marked a critical shift, however. With the advent of a plethora of ereading devices, the conversation was no longer about whether such devices will be viable replacements for books, but about ways to make them vastly better than books ever were.