The Globe and Mail reports in its Thursday edition that markets rallied hard after Donald Trump won, sparking hopes of tax cuts and pro-business policies. Guest columnist Ken Fisher writes, however, that midmonth volatility renewed the shrieking of pundits worldwide. Many see his tough tariff talk and America-first rhetoric as toxic to global trade and the Toronto Stock Exchange. Relax, Mr. Fisher says: There is no reason to presume pessimism. People often fear postelection crashes, largely based on biases about the winner. Stocks usually rally after an election no matter who wins. Many gloomsters the world over dislike the outcome. Bearish takes on Mr. Trump abound, citing his bizarre cabinet picks, harsh rhetoric and tariff talk as huge negatives. Bears have short memories. In 2016, pundits said the same thing. Still, stocks jumped globally after the 2016 election and rallied through 2017. Mr. Fisher calls it "falling uncertainty." Canada's markets lagged as a result of oil's woes, not tariffs. People say now is different, as Mr. Trump threatens 10-per-cent tariffs on all U.S. imports -- even from allies like Canada. There is already talk of exempting Canadian oil from new tariffs, although that uncertainty remains.