Some wonder why we have been so convinced that no matter what happens, that the Fed will have no choice but to continue pushing the monetary easing pedal to the metal. It is actually no secret: we explained the logic for the first time back in March of this year with "Here Is Why The Fed Will Have To Do At Least Another $3.6 Trillion In Quantitative Easing." The logic, in a nutshell, is simple: everyone who looks at modern monetary practice (as opposed to theory) through the prism of a 1980s textbook is woefully unprepared for the modern capital markets reality for one simple reason: shadow banking; and when accounting for the ongoing melt of shadow banking credit intermediates, which continues to accelerate, the Fed has a Herculean task ahead of it in restoring consolidated credit growth. Shadow banking, as we have explained many times most recently here, is merely an unregulated, inflationary-buffer (as it has no matched deposits) which provides the conventional banking credit transformations such as maturity, credit and liquidity, in the process generating term liabilities. In yet other words, shadow banking creates credit money which can then flow into monetary conduits such as economic "growth" or capital markets, however without creating the threat of inflation - if anything shadow banks are the biggest systemic deflationary threat, as due to the relatively short-term nature of their duration exposure, they tend to lock up at the first sing of trouble (see Money Markets breaking the buck within hours of the Lehman failure) and lead to utter economic mayhem unless preempted. Well, preempting the collapse in the shadow banking system is precisely what the Fed's primary role has so far been, even more so than pushing the S&P to new all time highs. The problem, however, as we will show today, is that even with the Fed's balance sheet at $2.8 trillion and set to rise to $5 trillion in 2 years, it will not be enough.