The Economist explains | The Economist explains economics
What is the Keynesian multiplier?
Fiscal stimulus, an idea championed by John Maynard Keynes, has gone in and out of fashion
More from The Economist explains
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What is a carry trade?
Borrowing cheaply to buy high-yielding assets is popular, but risky
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The significance of liquid water on Mars
There could be an ocean’s worth deep underground
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Why Russian troops are attacking on motorbikes
New conditions give rise to new tactics
What is “two-tier” policing?
The conspiratorial belief has spread online, fuelling disorder in Britain
Would legal doping change the Olympics?
The impact would be smaller—and worse—than proponents of drug-taking claim
Do vice-presidential picks matter?
If they have any effect on an election’s result, it is at the margins