Inflation

An increase in aggregate prices.

Can be caused by

• overall increase in demand (of many goods) (e.g. China rising tide)
• overall decrease in supply (of many goods) (Peak Oil, Evolution of parasites attacking food plants)
• overall increase in the Money Supply (e.g. government keeps printing money to cover Budget Deficit)

can be measured by CPI, PPI, or PCE

• nice PCE graph https://fred.stlouisfed.org/series/PCE