ABSTRACT
If you do what you have always done, you will get what you always got.
—Mark Twain
Mark Twain was right about a lot of things. Tom Sawyer and Huck Finn, those beloved characters from his books, were always getting into scrapes and ›nding new and innovative ways to resolve them. If you follow the stages and steps of e Exchange, you too will be able to resolve di¨culties in new and innovative ways.
