Economics
Short Run vs Long Run Aggregate Supply Shifts
Quick fact
In the short run, a sudden increase in demand can push output above its long-run potential, but in the long run, output always returns to the level determined by resources and technology.
Why this is interesting
Think of an economy like a factory that can run at different speeds—but not all speeds are sustainable. Why does the economy sometimes produce more than its 'normal' capacity, and why can't that last?