AN AGE of uncertainty is upon us. For the past three decades or so, businesspeople have been able to steer by a few lodestars. Trade negotiators lowered and simplified trade barriers. Central bankers tried to keep inflation to a minimum. Policymakers around the world negotiated multilateral treaties on the environment. Global bodies such as NATO provided security in Europe. Today the lodestars are exploding, one after the other.
Meanwhile, Donald Trump is making policy on the hoof. It turns out that the Affordable Care Act of 2010, or Obamacare, is not so bad after all. A big section of his planned wall on the border with Mexico will be a fence. In the past presidents have always arrived in the White House with a detailed set of policies. Mr Trump arrives with a tatty envelope scrawled with a few jottings on the back. Across the Atlantic, Brexit has opened a Pandora’s box: nobody knows whether Britain will leave the European single market or negotiate the equivalent of an associate membership. The Supreme Court has yet to determine how much say Parliament will have in shaping the negotiations.
One of the big promises from…
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