From the article:
"If the problem of an ever-growing debt burden cannot be resolved, then the next logical question is: When will the borrowing train run out of steam?"
I've posted about this before.
"The numbers" don't matter any more.
It doesn't matter whether the debt is $10 trillion, or $20 trillion, or $40 trillion, or [insert your number of choice here].
The government (that means the Republicans and the democrat/communists, it makes no difference which side you choose) is going to keep borrowing and borrowing.
The "train analogy" above is a poor one.
The train isn't going to run out of steam.
Rather, "the train" is running downgrade, down, down, down, with no brakes.
It's rolling freely and nothing can stop it.
(Aside: have you ever been at the controls of a train going downhill that was on the edge of being out-of-control? I have.)
Actually, there IS something that will finally stop it -- the curves at the bottom of the grade.
When it gets there, it's going off. Nothing can stop that, either.
But until that point is reached, it's gonna keep right on rolling.
And right now, there's no one who can say for certain as to where those curves that will wreck it are. But we'll know when we get there.
The only way the train could be brought back under control would be for the government to stop the spending. But no one in government is going to do that. Not now, Not in the future. Ain't gonna happen.
And that train I mentioned in the aside above?
I -did- manage to wrastle it back under control, but I was saved because we reached the bottom of the grade and that helped slow things down. But I was gettin' nervous for a few miles beforehand!