Then came the second Amsterdam discovery, although the principle was known elsewhere. Bank deposits...did not need to be left idly in the bank. They could be lent. The bank then got interest. The borrower then had a deposit that he could spend. But the original deposit still stood to the credit of the original depositor. That too could be spent. Money, spendable money, had been created. Let no one rub his or her eyes. It's still being done-every day. The creation of money by a bank is as simple as this, so simple, I've often said, that the mind is slightly repelled.