Subject: $100T
Apparently this guy is respected. Not some crackpot. I read this in my feed (I think Fortune), but I'm linking Yahoo Finance.

https://finance.yahoo.com/news...

According to Kent Smetters, faculty director of the Penn Wharton Budget Model and one of the country’s most respected fiscal economists, that $39 trillion number is a polite fiction. The real tab, he argues, is closer to $100 trillion.

I'm not an accountant, and don't want to be. I'm assuming the accounting distinction he is drawing is significant, and not some "trick" accountants play to draw the picture they want.