What is the national debt, and should we worry about it?

The national debt is essentially a record of all the dollars the federal government has spent into the economy but hasn't taxed back. Those dollars don't disappear - they become savings held by the private sector, including households, businesses, pension funds, and foreign governments.

When the government runs a deficit, it means the private sector is running a surplus. The 'national debt' represents the accumulated financial wealth that the private sector holds in the form of Treasury bonds - one of the safest assets in the world. When we talk about 'paying off the debt,' we're really talking about eliminating those savings.

The debt clock is often presented as something scary, but it could just as easily be called the 'private sector savings clock' or the 'national wealth clock.' For a country that issues its own currency, the national debt is fundamentally different from household or business debt. The US government can never run out of dollars to pay obligations denominated in dollars.

This doesn't mean deficits don't matter at all - they can contribute to inflation if they're too large relative to the economy's capacity. But the fear that we're 'burdening future generations' with debt misunderstands how federal finance actually works.