Interesting questions. In short your first question - no. It's been decades since you needed real assets to print money as a nation. That's what banking used to be in the distant past. You gave the bank your bit of gold for safekeeping and they printed a bank note for you to honour your deposit.
Did you know that when someone borrows $1 in the US the banks and central bank can go out and print money to lend to other people to cover the borrowings? The interest from those debts creates money out of nothing. The problem is if the security does not equal the debt once called, you have an issue like the 2008 GFC. That's one way money is created out of thin air. Another less conventional way of raising capital is to buy the assets in banks, this artificially increasing their value and then flooding the market with liquidity. This is QE. It's a scam of course particularly in the US where the US Fed Reserve which is controlled by private banks, purchases other bank's assets and then creates liquidity out of that. Great scam. Another is higher risk leveraged funds. What you have is a bunch of leeches feeding off humanity and using the excuse that usury is the best option we have - well for those in a position to print money out of thin air - yes it pays for their 100 foot yachts in Monaco..
I think in the very near future we will find out just how bad the books really are. Starting with Europe and then the USA or Japan.
The nature of usury, printing money (or the sanitised propagandist version Quantitative Easing), out of control leveraged hedge funds and crook central and merchant bankers all add up to an unsustainable system. Debt, by its very nature cannot simply continue to increase, just as the earth has finite resources. The orthodox market approach to a debt problem is to create more debt. The irony is that their big concern is inflation pressures - rather than the fact that more unsustainable debt is created! Dreaming.
At some point, the debts will be called and the ultra wealthy 1% who control about 90% of the world's real wealth (that's once you've settled debts against assets) will have to answer to the whole of humanity for their dysfunctional system.
But fear not, if there's a problem just lend more and print more cash out of thin air.
What a gorgeous day. I think it's time for a swim.