The book describes a very simple method to find increasingly profitable companies to invest in and rejecting investment in companies which are likely to be unprofitable. You can do this yourself without needing the assistance of investment advisers and tipsters. This method, calculating the degree of Returns to Scale of a company, is new and has been used to date by only a few individuals to their considerable profit. Firms with Increasing Returns to Scale have rapidly increasing profits and usually rising share prices. Now, using this book anyone can use this method easily to find firms with Increasing Returns to Scale to invest in, (and rejecting investment in firms with Decreasing and Negative Returns to Scale), to their great profit.