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At the very least, a mortgage had to be pooled with other mortgages of other homeowners. Traders and investors would trust statistics and buy into a pool of several thousand mortgage loans made by a Savings and Loan, of which, by the laws of probability, only a small fraction should default. Pieces of paper could be issued that entitled the bearer to a pro-rata share of the cash flows from the pool, a guaranteed slice of a fixed pie. There could be millions of pools, each of which held mortgages with particular characteristics, each pool in itself homogeneous. It would hold, for example, home mortgages of less than one hundred and ten thousand dollars paying an interest rate of 12 per cent. The holder of the piece of paper from the pool would earn 12 per cent a year on his money plus his share of the repayments of principal from the homeowners. Thus standardised, the pieces of paper could be sold to an American pension fund, to a Tokyo trust company, to a Swiss bank, to a tax-evading Greek shipping tycoon living in a yacht in the harbour of Monte Carlo, to anyone with money to invest. Thus standardised, the pieces of paper could be traded. All the trader would see was the bond. All the trader wanted to see was the bond. A bond he could whip and drive. A line which would never be crossed could be drawn down the centre of the market. On one side would be the homeowner, on the other, investors and traders. The two groups would never meet; this is curious in view of how personal it seems to lend a fellow man the money to buy his home. The homeowner would only see his local Savings and Loan manager from whom the money came, and to whom it was, over time, returned. Investors and traders would see paper. Bob
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