“A second reason why science cannot replace judgement is the behavior of financial markets.”
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And finally, no matter how good the science gets, there are problems that inevitably depend on judgement, on art, on a feel for financial markets.
To finance this trade deficit, the U.S. has to borrow from the rest of the world or sell American assets like stocks, businesses, and real estate to the rest of the world.
Increased government spending can provide a temporary stimulus to demand and output but in the longer run higher levels of government spending crowd out private investment or require higher taxes that weaken growth by reducing incentives to save, invest, innovate, and work.
The only way that we can reduce our financial dependence on the inflow of funds from the rest of the world is to reduce our trade deficit.