by Steve Saville, The Speculative Investor
All else remaining equal, an increase in the supply of money will lead to a decrease in the purchasing-power (price) of money. Furthermore, this is the only effect of monetary inflation that the average economist or central banker cares about. Increases in the money supply are therefore generally considered to be harmless or even beneficial as long as the purchasing-power of money is perceived to be fairly stable*. However, reduced purchasing-power for money is not the most important adverse effect of monetary inflation.
If an increase in the supply of money led to a proportional shift in prices throughout the economy then its consequences would be both easy to see and not particularly troublesome. Unfortunately, that’s not the way it happens. What actually happens is that monetary inflation causes changes in relative prices, with the spending of the first recipients of the newly-created money determining the prices that rise the first and the most.