Instruct: Classify a given review into positive or negative sentiment.
Query: Short on concrete, ***********

Its been some time since I read this book, but my lasting impression is that it is not very useful -- it's a 400 page ad for hiring him as a consultant -- based on promises alone.He describes writing a UI design document based, not on roles people play (not directly), but inventing "real" people with concrete skills and characteristics, imbedding stock photo in the document to make the "person" more real. Good idea to enhance UI Use Case type documents.But the book contains no examples. Only abstract statements. What does a good UI document look like? How detailed should it be?I contacted him via email to obtain so concrete examples. He refused claiming his examples are owned by his clients. I responded suggesting simplification to remove identifying info or he (or I) getting permission from the client for some limited access. No response.Is he for real? Does he have concrete examples? Prove it!! Or is he just blowing smoke.