This year, Deficit Day - that is, the day the federal government runs out of money for the year and starts spending money it doesn't have - fell on October 24. This is about average for the last 30 or so years. And yet, somehow, this year's deficit spending is on track to be the largest it's ever been. How does that work? And what's the difference between mandatory and discretionary spending? Is the rate of expansion of government spending sustainable? James Harrigan and Antony Davies discuss this and more on this week's episode of Words and Numbers.

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