kevindkeogh
Think of it this way, without New Yorkers, this building would be worthless.
I'll agree to the second critique re: the credit in a full-reserve banking case.
This is incorrect. Bank solvency has to do with the assets of the bank, even in markets with commodity (e.g., gold) or representative money (e.g., gold-backed paper). The assets of a bank include loans, the liabilities are the money the bank owes to depositors. There is no reason a bank can't take a gold deposit and loan it out (thereby, "creating" gold).
The purpose of a central bank, at least in orthodox economics, is to loan to solvent banks that are nonetheless cash-poor. Imagine a mismanaged bank, that has loaned too much, and cannot meet the demands of depositors. If the loans + cash are more valuable than the deposits, the central bank will loan to the bank to meet their temporary cash shortage. [0]
This is essentially what happened in the case of AIG. The Fed believed that the value of AIGs assets were greater than its liabilities, and loaned them the money at a penalty rate. The Fed believed that AIG was _solvent_. There were a number of extenuating factors here that I'm glossing over, but that is the underlying point. The reason that Lehman was not saved was that the Fed had substantial reason to believe that the assets (primarily the sub-prime loans) were not worth more than the liabilities, and the Fed will not lend into hole. Lehman was _insolvent_.
Fractional reserve banking, by itself, does not suggest solvency or insolvency. Without fractional reserve banking, there cannot be credit. Sharia banking is an example of full-reserve banking, because interest is prohibited, so there is no incentive to loan. (There are ways Islamic banks get around these prohibitions).
[0] I would suggest looking at Bagehot (1873) for a full description of this idea.
LIBOR (and there are different LIBORs for different currencies and maturities, the main one is USD 3-month) is the rate that banks lend each other on an unsecured basis. Technically, each bank determined their own LIBOR based on how they see the market and what they believe they can borrow at (hence our problems).
The important thing about LIBOR is that many trillions in notional of derivatives use it as a reference, so changing it has very real impact for all market participants (including pension funds, etc.). Even floating rate loans are often based on LIBOR.
[0] https://www.theice.com/publicdocs/endex/ICE_Endex_Trade_Canc...
[1] https://twitter.com/matt_levine/status/742800372473946112
Edit: For a more complete analysis of DB's capital position, they have published Moody's report on their credit. [2] I don't see much in there that would suggest DB was insolvent, but they do seem to be having some difficulty reorganizing their business.
[2] https://www.db.com/ir/de/download/Moody_s_on_DB_26_May_2016....