One of the most important questions in macroeconomics is one that economists have curiously chosen not to study. That question is: “How much can the government safely borrow?” In fact, no one knows the answer to this question.
https://noahpinion.substack.com/p/no-one-knows-how-much-the-government
https://noahpinion.substack.com/p/no-one-knows-how-much-the-government