Earlier quoted context omitted.
> If you believe economists and budget experts then you're absolutely right, there is no problem. But economists as a whole do no (or a tiny margin) better than chance at predicting a lot of things. You do realize that the whole thing you are trying to get us scared about is, itself, a prediction of future levels of debt service costs relative to other government expenditures by CBO and OMB economists and budget expe…
In this case their predictions are of the "look at the trend and extrapolate over a few years" kind which I am familiar with, and have a reason to believe. There's a HUGE difference between extrapolating a trend which shows no signs of slowing, and "predicting" that it will in fact be no problem whatsoever. Extrapolating a trend requires no particular expertise. But judging the impact of a particular cashflow on an e…
Those predictions necessarily involve predictions of revenue levels (and thus, general economic performance, and thus, the impact of debt service levels on general economic performance) for all the intervening years.
Which means accepting them means accepting that the "experts" involved can predict the impact of debt service levels on general economic performance, which is exactly the thing you have to assume they cannot do to dismiss the relevance of economists and budget experts opinion on the final condition.
> Remember, extending a trendline on a single metric (US debt or interest payments) and doing the same on a million metrics (everything that makes up the US economy) are two WILDLY different things.
Debt service costs are a product of: 1) Starting debt levels, 2) Government revenue vs. expenditures in the intervening period, and 3) Cost of borrowing for the government in the intervening time.
Note that #2 is dependent on performance of the overall economy, including all factors which influence the overall economy (and not just the aggregate performance, but how that performance is distributed relative to what government taxes.)