Valuation is so important, much more important than the economic facts and fictions, positive or not, that many market pundits, but mainly economists, enjoy sending our way with so much details and variations. From GMO’s James Montier:
History is littered with the remains of proclaimed, but unfulfilled, new eras. Exhibit 6 shows the long-run history for the Graham and Dodd P/E for the U.S. market. Over this time, we have witnessed some quite remarkable, and quite appalling, things – the deaths of empires, the births of nations, waves of globalization, periods of deregulation, periods of re-regulation, World Wars, revolutions, plagues, and huge technological and medical advances – and yet one thing has remained true throughout history: none of these events mattered from the perspective of value!
(…) attempting to invest on the back of economic forecasts is an exercise in extreme folly, even in normal times. Economists are probably the one group who make astrologers look like professionals when it comes to telling the future. Even a cursory glance at Exhibit 4 reveals that economists are simply useless when it comes to forecasting. They have missed every recession in the last four decades! And it isn’t just growth that economists can’t forecast: it’s also inflation, bond yields, and pretty much everything else.