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How the US—and world—could benefit from Brexit

Economists around the world generally agree that a Brexit will be damaging to the U.K. economy and wider European Union (EU) for some time to come, but some believe that it could give the U.S. and the world at large fresh impetus.

When the majority of British voters voted to leave the EU in a referendum last Thursday, global markets lost $3 trillion in paper losses between Friday and Monday, according to S&P Global.

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Markets appear to be bouncing back, however, and academics and economists believe that while the damage might be long-lasting to the U.K. if and when a proper Brexit occurs, the U.S. could benefit.

"The big giant is the U.S. and, unlike what most people are saying, I don't think that it's obvious that this is a negative for the U.S." Alan Blinder, Economics Professor at Princeton University told CNBC on Wednesday.

"For example, I remember the East Asian crisis in 1997-1998 which was bad for the world economy and a lot of people thought it was going to drag down the U.S. but it was the reverse," he said, speaking to CNBC in Sintra, Portugal, where the European Central Bank is holding its annual forum on central banking.

"It's one huge question mark. There is potential(ly) very large downside for the U.K. and it's hard to imagine any upside. For Europe I think it's a sizable but probably not Titanic(-sized) downside but nobody really knows, it's not like we have a lot of experience with things like that."

He said such uncertainty was bound to deter investment in Western Europe. "If you were a European multinational or a U.K. one thinking of siting a facility somewhere to serve the world, it's not obvious at all that you go to the EU or U.K. at all with this gigantic question mark hanging over everybody's head."

Blinder believed that the U.S. Federal Reserve would hold off making another interest rate increase in both July and September, "as these things go, September is a long way off and we'll know a lot more about the world economic reaction to Brexit by September than we do now."

Andrew Sheng, distinguished fellow of Fung Global Institute, a Hong Kong-based global think tank, told CNBC that a Brexit was a "wake-up call to the whole world" and was a reaction against globalization.

"I think that those people who feel that they don't have enough access to resources and feel that life is unequal to them are blaming globalization and I think we have to listen to them," he told CNBC in Sintra. "We have to realize that the world has changed very, very fast and people are worried about their jobs, they're worried about immigration and so Brexit is a wake-up call to all of us."

He said he expected to see change as a result of the vote. "People need to realize that during this time of almost traumatic or transformative change such as technology, climate change, migration, terrorism - all these are very confusing and there's where leadership needs to come in and tell people that we have way forward. Then once everyone realizes what we have a stake in it (the future), then we'll all move together."

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