There are economic textbook called pre-pharmacy require...micro and macro-econimic in UB. They have textbook and the TA session...supply and demand charts.

They always have a population on statistic....meaning more diagrams, more graphs, more charts. What comes intuitive to your personal patent holder, to what you imagine to be like me. 

Do you understand the real concepts in that book, every book you ever read?

I highly doubts it....your GPA.