I address these questions in Video #1 (questions 1 and 2) and Video #2 (questions 3 and 4) from the Chapter 13 module. These are also discussed in your book 1. The Payback method is not a true measure of the profitability of an investment. It just tells a manager how many years are required to recover the original investment. What are the two additional criticisms of the Payback method that I mention in Video #1 or can be found on page 635 of your book? 2. The Simple Rate of Retum method does not use cash flow but focuses on 'net operating income. What is the other major criticism of the Simple Rate of Retum method that I mention in Video #1 or can be found on page 652 of your book? 3. What are the two simplifying assumptions associated with the Net Present Value method that I mention in Video #2 or can be found on page 638 of your book? 4. What is the questionable assumption' made in the Internal Rate of Return method that I mention in Video #2 or can be found on page 645 of your book