Are foreign currencies a way to make more money by exchanging dollars for a more stable currency? For example, if one dollar equals one euro, but the euro sees no inflation, whereas the dollar sees 5% inflation, could I put my life savings into euros to come out with a 5% increase in my dollars. Also, wouldn't these rates mean that I could pick any two currencies and make money by either borrowing or lending one of the currencies (as in exchanging one currency for another, not getting a loan with interest) and make money by making the right decision unless the two currencies had the same rate of inflation?
********** THE DOWNSIDES: the rate to borrow goes up (uh oh now it costs more to borrow), the currency exchange rate from yen to dollar goes down (uh oh, when you convert your money back to yen, it costs more dollars to do that), or, if the thigs that are supposed to go up collapses (Uh oh, Trump just tariffed the crap out of everybody and stocks decided to jump off a cliff).
So in the example, if the rate to exchange yen decreases from 160 per USD to 140, the 400k profit you had turns into a nice 250k loss. And that just ONE thing that can go wrong.
Also, Gavin makes a good point, if all the prices of goods also go up 5%, then nothing is achieved, so there's that. Also, why not put your money into euro-bonds and make a profit that way, albeit very small.