We write this essay for both lay readers and scientists, though mainstream economists are welcome to enjoy it too. Our subject is the basic toolbox of mainstream economics. The most important tools in this box are demand, supply and equilibrium. All mainstream economists – as well as many...

The financial crisis of 2007-09 began as a local problem in the mortgage finance market in the United States and Europe but, within months, escalated into a general global financial crisis, resulting in collapsing investment not just in developed nations but also in Shanghai, Rio and Mumbai, and...