Think of inflation the way you think of Goldilocks and the Three Bears: too much or too little is a problem. Just a bit can be just right. Sign at a market tells consumers they will get less for more. (Illustration by News Decoder) Editor’s note: On 14 October, the head of J.P. Morgan, one of the world’s largest investment banks, warned of a ripple effect from the collapse of the private credit market in the United States as some providers of car loans announced they were going under.