Now we are facing a big economic crisis. All the countries are making every effort to control this chaotic mood. Suppose we are in 22th century, this crisis can be called the Second Great Depression. Or the Greater Depression might be more accurate expression. Now we can get any information about the current economic situation. That's why we can stay a little moderate. We believe many advanced nations are cooperative with each other. However, if this downturn is just a beginning of the Greater Depression, what will come next?