Explain what will happen if the expectation of rising prices on New York and falling prices in London becomes widespread. Might expectations become self-fulfilling?

Property investors are looking outside London in the uncertain climate created by the U.K. vote to leave the European Union—Brexit. New York could gain from this changed outlook, but that’s not all good news. It could add further upward momentum to an already overheated U.S. property market. A fall in the U.K. pound might moderate some of these predictions.