The Brain and the Computer
正确答案：
Some recent developments in the computer industry make scientists predict
that the gap between human beings and machines will be closed about the year
20000.To understand the significance of this prediction let us compare the human
brain with existing computers. The brain consumes electrical energy at the rate
of 25 watts and occupies a volume of one tenth of a cubic foot. The brain houses
between 10 billion and 100 billion items of information. Every brain cell is
directly connected to many other cells. As a result, the cells in which
information is stored can communicate with thousands of other cells.However, the
computer consumes 1000,000 watts of electrical power and occupies hundreds of
cubic feet of space. Its million items of immediately accessible information. In
contrast, the computer memory is like a cell of n pigeonholes, with no thinking
capacity and no connections elsewhere.In a word, the electronic brains are
hopelessly inadequate in comparison with the human brains.
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