RIO DE JANEIRO, BRAZIL - Since their inception, banks have had a simple business model: to raise money from account holders and lend it with interest. Much more than an activity of "greedy people" - an image consecrated by the character Shylock in Shakespeare's classic The Merchant of Venice - banks have been instrumental in the greatest achievements of modern man, from great navigations to technological advances, from the conquest of democracy to innovations in medicine.
Without credit, the world as we know it would not exist. According to American economist Robert Shiller, Nobel laureate, the financial system enables the transformation of . . .