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Politics : Foreign Affairs Discussion Group

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To: carranza2 who wrote (142840)	8/11/2004 11:14:31 AM
From: Sun Tzu	Read Replies (1) of 281500

I've only read excerpts of the book. Our brains are massively parallel machines. Parallel processing has a cost associated with it which is typically 10%-20% of the resources. This is to say that a 2xCPU machine may be deliver say 180% performance and a 4xCPU machine may deliver only 300% performance. Long before you reach anything approaching human brain capacity, the system will thrash (spend more time on managing parallelism than processing). From what I know, Penrose shows that to design a processing unit fast enough to prevent thrashing, you have to resort to quantum computing and at levels that violate QED laws.

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