average net profit margin by industry Interest rate In the 1920s and 1930s, the great depression forced western economic theorists to reflect on the definition of the market. The final answer is completely laissez faire is not enough, the invisible hand sometimes does not exist, market failure, government should be on economic activity on the "total" intervention, so "macroeconomics" was born. Roosevelt also accepted Keynes's proposal to impose a "New Deal" on government intervention in the economy. It has now formed the world's most consensus-building government: fiscal policy, monetary policy, and, of course, none of these "new" policies. China's understanding of the market is mainly based on mechanical reference to western economic theory, but it ignores their assumptions and implicit assumptions. China's so-called mainstream economists' understanding of the market is more of a new classic. In other words, the market is an efficient allocation of social resources pricing mechanism. Although China has introduced new institutional economics, it has not read the meaning of "property rights", and mechanically believes that property rights are based on "stock of property". Additionally, some businesses tend to omit or neglect the after-sales service. /After putting the money into the pocket, businesses shoulder no responsibility for the successive service. This narrow-minded view wipes off the potential business based on customers' impression. When Businesses have been immersed in counting the temporary money, they have failed to gain more in future. /For example, the diamond of shoes from ABC I had purchased dropped off in two days. I had to head for the relevant repairing center. However, the repaired shoes broke again and irritated me to ask for the refund. What's more, they even charged more for the refunded money. Later I sworn never to offer a glance at this shop and dissuaded friends from visiting it. The customer's feeling directly decides on products' life in the market. When you decide that you want to create maximum profits in Forex trading, something else that you'll need to complete is to create sure that you create a long-term strategy. Even though investing of currency for profits is usually a fantastic way to increase your portfolio in the short term, it's not as good as a long lasting strategy also it needs a large amount of monitoring. You therefore have to design a long term strategy that may enable you to view your investments rising steadily within the months as well as the years. In his theory, money supply is controlled by the central bank and is an exogenous variable with no interest rate elasticity. At this point, monetary demand depends on people's psychological "liquidity preference".