What is really meant by Lean

In your own words provide in a document (maximum of 500 words) a summary of the first three chapters in Lean Done Right. This paper should include the following: 1) what is really meant by Lean; 2) examples of how Lean has been misused or applied incorrectly; 3) how is Lean successfully achieved; 4) who and/or what is critical in the creation of a Lean organization.