If there was one message that echoed through the mountains ringing Davos a year ago, it was that the business world could ignore tweets from U.S. leader Donald Trump.

Once in office Trump would act more like a conventional American president and his torrent of Twitter taunts would surely slow, according to many of the executives who gathered in the Swiss town for the World Economic Forum just as he was inaugurated in 2017.

The thousands of Twitter rants Trump has sent since then — including one calling himself a “very stable genius” in defense of his mental health — show how wrong they were. It seems the mostly male corporate and political personalities who descend on the Alpine resort each year didn’t do well at foretelling the future.

Trump will be the center of attention at Davos again in the coming days, this time as the first sitting U.S. president in two decades to attend. As he takes his protectionist agenda straight to the internationalist elite, a look back shows that while many projections didn’t come true, some did.

Chitchat at Davos last January centered on Trump’s controversial campaign pledges to impose a travel ban on a number of predominately Muslim countries, to upend the North American Free Trade Agreement and to build a wall at the Mexican border.

“What somebody’s saying is not necessarily what they’re going to do,” David Cote, chief executive officer of Honeywell International Inc., said at the time. Companies needn’t fret over the president’s “one-liners” and can instead focus on Trump’s Cabinet nominees, added JPMorgan Chase & Co. CEO Jamie Dimon: “I think that these very rational people will be very thoughtful when they go about the actual policy.”

Last month, the U.S. Supreme Court allowed Trump’s travel ban to take effect pending appeal. Trump, meanwhile, reiterated his threat to pull out of NAFTA even this month, saying that doing this could generate cash to build the southern wall.

But corporate executives were correct to suggest Trump would be on their side and that the economy would continue to do well during his first year. “There seems to be a sense that we need to help corporate America,” Tom Farley, president of exchange operator NYSE Group, said at the time.

Goldman Sachs Group Inc. CEO Lloyd Blankfein said Trump’s manifesto would be stimulative for the economy. Growth did, in the end, accelerate to a projected 2.3 percent versus 1.5 percent — although it’s hard to say how much of that was due to Trump-era policies. Goldman Sachs economists predict his fiscal policy will boost U.S. growth by 0.6 percentage point in 2018.

At last year’s gathering, Trump was unofficially represented by hedge fund manager Anthony Scaramucci — who would later last just 10 days as the White House communications director. Scaramucci’s forecast that Trump would push through a tax overhaul was spot on: he recently signed a bill that cut U.S. corporate tax to 21 percent from 35 percent.

Less successful were Scaramucci’s predictions that Trump’s inauguration speech would be Reagan-esque and that the new president would offer great hope for globalism.

Billionaire investor George Soros, who called Trump a “con man,” made a gloomy prediction that the stock market rally would soon come to an end. He was wrong: The Standard & Poor’s 500 Index has rallied more than 20 percent in the past year.

“Uncertainty is at a peak, and actually uncertainty is the enemy of long-term investment,” Soros said in Davos. “I don’t think the markets are going to do very well. Right now they’re still celebrating. But when reality comes, it will prevail.”

Others proved more prescient. Credit Suisse Group AG CEO Tidjane Thiam said equities would have a reasonable year and Luke Ellis of Man Group PLC said it was a good time to buy cheap securities.

Davos delegates were also amiss when it came to the dollar, which did the opposite of what they said it would.

UBS Group AG Chairman Axel Weber, for one, expected the then-rallying dollar would gain a further 10 percent in the following 10 to 15 months. Credit Suisse’s Thiam agreed the U.S. currency would keep strengthening, although he put a limit on how high it could go.

In the end, the Bloomberg Dollar Spot Index dropped 8.5 percent in 2017 as the greenback slid among all but one of its 16 major peers.

Looking back at the last retreat, top executives from oil companies and trading houses showed greater foresight on the crude price trajectory than policy makers from major producing nations.

The general view among industry pundits was that price swings would remain relatively low, with oil trading between $50 and $60 a barrel — exactly what unfolded. “We are climbing very, very slowly out of a very tough period for the industry,” said BP PLC CEO Bob Dudley.

Less successful were ministers betting on a quicker recovery for oil and the wider energy industry.

The most notable example was Saudi Arabia’s Khalid Al-Falih, who wrongly forecast that OPEC was likely to phase out production cuts by mid-2017 thanks to accelerating oil demand growth and disappointing U.S. shale output. Not only did the cartel extend the cuts through year-end, it recently stretched them out to the end of 2018.

When it came to doing business in the Trump era, Moelis & Co. Chairman Ken Moelis was correct to predict that chief executive officers would scale back deal-making while awaiting clarity on the new administration’s policies. The volume of North American mergers and acquisitions fell 23 percent to $1.2 trillion, with some blaming Trump-related uncertainty.

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