Weaker currencies abroad mean a strong dollar, and a stronger dollar, together with a weak global environment, is a drag on the U.S. economy. So it's important, as it affects overall levels of production and employment in the U.S. There are many domestic industries doing well in the United States, notwithstanding a strong dollar.

The U.S. government has a technology, called a printing press (or, today, its electronic equivalent), that allows it to produce as many U.S. dollars as it wishes at essentially no cost.

The amount of currency in circulation is not changing. The money supply is not changing in any significant way.

The lesson of history is that you do not get a sustained economic recovery as long as the financial system is in crisis.

If current trends continue, the typical U.S. worker will be considerably more productive several decades from now. Thus, one might argue that letting future generations bear the burden of population aging is appropriate, as they will likely be richer than we are even taking that burden into account.

The Federal Reserve will not monetize the debt.

The sources of deflation are not a mystery. Deflation is in almost all cases a side effect of a collapse of aggregate demand.. a drop in spending so severe that producers must cut prices on an ongoing basis in order to find buyers.