| His talk makes the mistake that spending money is what drives the economy. This is a fundamental error. What drives the economy is people creating value. When people have created value, they can exchange that value for things they want from other people who have created value. Simply handing people money to spend is not stimulative because it does not create value. Put another way, taking money from A and giving it to B so B can buy things from A does not (and cannot) make A wealthier. The route to greater wealth for A and B is that both A and B specialize in creating things that the other wants. Then, they trade, and each winds up with a higher standard of living than if each tried to do both. Economies are built on the greater efficiency that comes from specialization, and the resulting trade. |
Either way, the process of creating 'real value' on both sides cannot get started in some cases because neither A nor B has any confidence (or capital to support their confidence) that the other side will have the currency to buy the real value they intend to create.
Sure, the currency itself just goes around in circles, and only acts as a catalyst to creation of the 'real value' we are after. But by injecting actual currency to one side or the other (through tax cuts or other means) we increase the aggregate demand and thus amount of flow of this currency in the economy as a whole. This could then (hopefully) increase the confidence of A and B that the other will buy their real value and thus is a way to restart the circular flows of productivity that ultimately creates jobs (and real value).
His talk sort of just assumes you are aware of all the above. His actual point is that by giving tax cuts to the wealthy instead of workers a greater percentage of the stimulus / tax cut stays in bank accounts and thus the effect on aggregate demand is less.