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Inflationary and deflationary scenarios
This tutorial walks through various scenarios of moderate and extreme price changes. Very good way to understand how activity in the economy may impact price (and vice versa).
Why there tends to be moderate inflation during good economies
How a supply shock can cause prices to rise and the economy to stagnate
Basics of a deflationary spiral
Basic of hyperinflation. Weimar Germany, Hungarian Pengo and Zibabwean Dollar