0 = Abandon the book after first chapter

1 = Waste of paper, we will see what the environmentalist say about this!

2 = Skip it, read the book if you have got nothing better to do

2.5 = An average book, easily forgettable.

3 = A good read.

3.5 = A good entertaining read, a page-turner

4 = So glad that I read the book, a book with substance and invaluable for future reference

4.5 = So glad that I read the book, would pester everyone to read it, invaluable, I would want to own it and wouldn't mind a second read (something that I seldom do)

5 = The book is so good that I feel like I am on scale 4 and 4.5, and more, it blew me away and lingers on my head for weeks!