Existing knowledge about what makes the free market economy system function efficiently is incomplete, though improving continually. Few scholars of economics possess any idea as to what unleashes the factors that fuel free market efficiency, high economic growth, and sustained human-centred development. The lack of this knowledge has led to warped philosophical economic thinking, theorising, faulty policies, useless plans, irrelevant projects, and bankrupt programmes. This book presents the theory and empirical evidence on the human factor foundation of free market efficiency. It demonstrates that the sole variable that underscores the degree of effectiveness of the laissez-faire economic system is the quality of the human factor.