[tungle]

I doubt point 1), pls enlighten me. When a commercial bank receive interest from bonds from a central bank, it can then take out the proportion of 'real money' it put in before. Say, I'm BofA, I put in 10b as compulsory lock (my laymen term), I use some other money to buy bonds and receive interest, say, 200m. Then if that 200m goes to my reserve, I'd have 10.2b, which is 200m above the compulsory lock, then I can take that 200m out and use for business. Money doesn't have the label 'old money, can use' vs 'newly-printed money, can't use', does it?

Minor edit: adding missing 'take' (in 'take that')