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11/14/2018

The Genius Neuroscientist Who Might Hold the Key to True AI

Warning: the free energy principle is maddeningly difficult to understand

When King George III of England began to show signs of acute mania toward the end of his reign, rumors about the royal madness multiplied quickly in the public mind. One legend had it that George tried to shake hands with a tree, believing it to be the King of Prussia. Another described how he was whisked away to a house on Queen Square, in the Bloomsbury district of London, to receive treatment among his subjects. The tale goes on that George’s wife, Queen Charlotte, hired out the cellar of a local pub to stock provisions for the king’s meals while he stayed under his doctor’s care.

More than two centuries later, this story about Queen Square is still popular in London guidebooks. And whether or not it’s true, the neighborhood has evolved over the years as if to conform to it. A metal statue of Charlotte stands over the northern end of the square; the corner pub is called the Queen’s Larder; and the square’s quiet rectangular garden is now all but surrounded by people who work on brains and people whose brains need work. The National Hospital for Neurology and Neurosurgery—where a modern-day royal might well seek treatment—dominates one corner of Queen Square, and the world-renowned neuroscience research facilities of University College London round out its perimeter. During a week of perfect weather last July, dozens of neurological patients and their families passed silent time on wooden benches at the outer edges of the grass.

On a typical Monday, Karl Friston arrives on Queen Square at 12:25 pm and smokes a cigarette in the garden by the statue of Queen Charlotte. A slightly bent, solitary figure with thick gray hair, Friston is the scientific director of University College London’s storied Functional Imaging Laboratory, known to everyone who works there as the FIL. After finishing his cigarette, Friston walks to the western side of the square, enters a brick and limestone building, and heads to a seminar room on the fourth floor, where anywhere from two to two dozen people might be facing a blank white wall waiting for him. Friston likes to arrive five minutes late, so everyone else is already there.

Please select this link to read the complete article from WIRED.

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