Simply told, Economics is science applied to money and commerce. The first who thought to do this soon prove how important it is for national development, and then everyone was rushing to study economics. And to invent new and ever more sophisticated and implausible financial instruments with which to rip off the unsuspecting consumer. Development of economics unlocks the final building of the Commercial Hub - the Stock Exchange , where the above-mentioned folks could engage freely into that rip-off, on a grand and majestic scale.