maximize profit calculus The investment quantity is the decreasing function of interest rate, saving is the increment function of interest rate, and the change of interest rate depends on the equilibrium point of investment quantity and saving amount. Keynes's theory of money supply and demand decided that interest rates were a monetary factor rather than an actual factor. So now that it is the end of the year, it is a good time to reflect on what we have done to achieve these goals. Block chain can create a world in which all requirements were met, everyone can express their own points of view, we can take meaningful global cooperation, can benefit through different experience. The truth about foreclosures is That NO ONE wants one. You, the homeowner, obviously don't want to loose your own home to a foreclosure. The bank actually does not desire to foreclose. The bank will not have anything to gain by foreclosing on your own home. As a result of foreclosed the bank finds itself which has a home it does not want, a property it may ought to engage a "trash-out" plan to clean, a property it must sell. Even when the lending company does sell a foreclosed home it might loose funds on the sale of the home. About the only person who benefits from a foreclosure will be the "trash-out" service. Larger suppliers can borrow cheaply from the government's regular contributions, which means they have little incentive to raise savings rates to attract customers' deposits and then lend.