Speaking of Psychology - The Biggest Advance in Memory in the 20th Century

In the new edition of your book, can you say what has been the biggest change or advance in our understanding of memory in the 20 years since you published the first edition? A, that's a really good question. What i would like to be able to do is go through each of the seven sand and say what i think is the most important thing. We now have more experimental support for this fundamental idea thata various kinds of memory errors actually reflect adaptive aspects of the system. That would be the thing that i would single out.