Mainstream economic textbooks propose a kind of economic world which can only exist in fictitious markets where producers and consumers interact like robots, relations are mechanical and assumptions utopian. Accordingly, the expositions are, in substance, nothing but sophistry. Yet, many economists are becoming more and more discontent with the sophistries of mainstream doctrines. The book presents some realistic alternative approaches to the conventional `unrealistic' attitudes of mainstream economists in order to pave the way for a further development of new ideas.