The whole Modern Conventional Economics revolves around the MARKET FORCES or MARKET MECHANISM, which at the elementary level is referred to as DEMAND and SUPPLY or PRICE SYSTEM, or LAISSEZ FAIRE, and at the higher level, CAPITALISM or INVISIBLE HAND. Beginning with its elementary level, one can hardly find a student of Economics who did not find it difficult to understand the mechanics of Demand and Supply. This is also true, when it comes to the higher level, where it also reflects the true nature of the Conventional Economics, which also becomes very difficult, more especially when it comes to the understanding of its real philosophy.