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How to Defeat Superintelligent Computers
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I'm re-reading King's Wizard and Glass on audio while I'm reading the last book in the series, The Dark Tower, and I'm at the part where the group of venturers defeat a superintelligent computer running a monorail named Blaine.

They defeat it by shorting out its logic circuits, a well-worn trope in sci-fi, acknowledged by this Economist article on fuzzy thinking:

EPIMENIDES the Cretan, a philosopher of the 6th century BC, is said to have uttered the sentence, “All Cretans are liars”. As he himself was a Cretan, this gave rise to a paradox—if he were telling the truth, then he would be a liar. Depending on how one defines a liar, the paradox is resolvable; he could have been a habitual liar who was telling the truth in this one instance. However, a stronger version of the paradox, known as the Liar paradox—“this sentence is false”—is not resolvable in conventional logic systems.

Indeed, the circular loop that the sentence induces—if it is false, it must be true, and if true, false—has been used more than once in science-fiction movies to cause marauding computers to lose their sanity and explode.

Well, it wasn't a paradox, exactly, that did Blaine in. It was nonsense...silliness. Logic not playing by the rules. But using paradoxes to destroy superintelligent computers has been put to good use time and again.

It's interesting to note that when you read...

This sentence is false.

...your head doesn't explode. Or if it did, I apologize.

This is because our minds are fuzzy systems. They don't crash or lock up the way binary, sequential processing systems do. When encountering paradox or illogic, they don't break. On the contrary, we often find paradox or incongruities interesting, pleasing, and/or funny.

In fact, I personally don't think it's possible for humans to create a human-level or above intelligence the old fashioned way. I think it's going to have to be a massively parallel fuzzy system. So, sad to say, I don't think you're going to be able to thwart superintelligent computers in the future by showing them a painting with a pipe, with the subtitle, "This is not a pipe."

I'd suggest a nice EMP instead.

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