You can't even calculate the cost of decorating a headquarters. Faced with the dynamic changes in the real world, you only know how to explain afterwards and conduct model backtesting. What confidence do you have to tell the public: should interest rates be lowered and when This statement is very good. Under Powell's leadership, the Federal Reserve cannot even afford a simple renovation, with delays and budget overruns. Why do many people think Powell's interest rate policy is right, appropriate, and suitable? I even feel that the cost of decoration has been rising and rising again, making Powell feel that inflation is too high and cannot be lowered?