"Because economics is all about optimising, doing the best you can with what you have - it's usually the first place you should look for answers if you want to maximise your happiness."

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The world economy is in a nosedive, and understanding what I call "depression economics" - the weird world you get into when even a zero interest rate isn't low enough, and a messed-up financial system is dragging down the real economy - is essential if we're going to avoid the worst.

— Paul Krugman