Cityphilia
John Lanchester: The credit crunch, 3 January 2008
“... out of Black-Scholes (as it is now universally known) and the worldwide derivatives business took off like a rocket. In an ideal world, one populated by vegetarians and Esperanto speakers, derivatives would be used for one thing only: reducing levels of risk. Because they are bought ‘on margin’ – i.e. not for the full cost of the underlying ... ”