explain profitability Bed Prism Glasses or Lazy Glasses, since they are called, are an aid to relaxation. They are used mainly for relaxing in bed reading a novel or watching tv or sometimes by patients during recuperation from illness or injury, where long-term bed rest is necessary. Certainly not for anything that could be termed as a Sports Activity, in addition to watching the football on TV, in bed, perhaps! In 2010, China overtakes Japan being the other world's economy. According to economists, China remains to be a developing country with fast pace of growth. Data released that Japan\'s gross domestic product is $1.286 trillion while it is worth $1.335 trillion for China. Another source demonstrates Japan keeps growing at 2-3 percent in compared with 10 % a year of China. After all, with tighter regulation and tight capital, high interest rates and high limits mean high risk, but investors should also be careful not to put money in one basket. 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".