The only way to “build a wall” without destroying the U.S. | Jared Diamond

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There's more than one kind of wall that we can build. Building the right kind of wall might even be good for the U.S.

- In times of crisis, we often 'build a wall' that separates the part of our lives that feels out of control from the parts that are more in control.

- This is healthy and can help us maintain perspective.

- Nations, too, build walls during times of crisis. But those walls can't be designed to isolate ourselves from others; rather, they need to delineate what is working and what isn't.

Jared Diamond, a noted polymath, is Professor of Geography at the University of California, Los Angeles. Among his many awards are the U.S. National Medal of Science, Japan's Cosmos Prize, a MacArthur Foundation Fellowship, a Pulitzer Prize for General Nonfiction, and election to the U.S. National Academy of Sciences. He is the author of the international best-selling books: "Guns, Germs, and Steel"; "Collapse"; "Why Is Sex Fun?"; "The World Until Yesterday"; and "The Third Chimpanzee", and is the presenter of TV documentary series based on three of those books. His latest is "Upheaval: Turning Points for Nations in Crisis" http://bit.ly/jardiamond

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