Ultimately, if you're a country and you can "hide" debt, or make sure it's such a national security secret that nobody can ever know you're using tricks to hide it, you can effectively grow your country very quickly and effectively.

As long as you can cover your tracks, things are good.

And in the end, if your secret is out in the street, you don't really care because you already developed your economy, which is a huge benefit. I guess that's an advantage of what China is doing.