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  3. It is hard to predict how science is going to turn out, and if it is really good science it is impossible to predict. If the thi

It is hard to predict how science is going to turn out, and if it is really good science it is impossible to predict. If the thi

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问题     It is hard to predict how science is going to turn out, and if it is really good science it is impossible to predict. If the things to be found are actually new, they are by definition unknown in advance. You cannot make choices in this matter. (46)You either have science or you don’t, and if you have it you are obliged to accept the surprising and disturbing pieces of information, along with the neat and promptly useful bits.
    The only solid piece of scientific truth about which I feel totally confident is that we are profoundly ignorant about nature. Indeed, I regard this as the major discovery of the past hundred years of biology. It is, in its way, an illuminating piece of news. (47)It would have amazed the brightest minds of the 18th century Enlightenment to be told by any of us how little we know and how bewildering the way ahead seems. (48)It is this sudden confrontation with the depth and scope of ignorance that represents the most significant contribution of the 20th century science to the human intellect. In earlier times, we either pretended to understand how things worked or ignored the problem, or simply made up stories to fill the gaps. Now that we have begun exploring in earnest, we are getting glimpses of how huge the questions are, and how far from being answered. Because of this, we are depressed. (49)It is not so bad being ignorant if you are totally ignorant the hard thing is knowing in some detail the reality of ignorance, the worst spots and here and there the not so bad spots, but no true light at the end of the tunnel nor even any tunnels that can yet be trusted.
    But we are making a beginning and there ought to be some satisfaction. There are probably no questions we can think up that can’t be answered, sooner or later, including even the matter of consciousness. (50)To be sure, there may well be questions we can’t think up, ever, and therefore limits to the reach of human intellect, but that is another matter. Within our limits, we should be able to work our way through to all our answers if we keep at it long enough, and pay attention.

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答案如果你是彻底无知的话，无知也就不那么糟了。困难的是了解无知这一事实的具体情况，最差的地方以及这里或者那里不这么差的地方，但是通道的尽头没有真正灯光指引，而且至今还没有可以信赖的任何通道。
解析 句子框架是It is not so bad being ignorant if...；the hard thing is knowing...the reality...but no true light...nor even any tunnels...。分号连接两个并列句。前面的分句句首it为形式主语，真正的主语为being ignorant；if引导条件状语从句。后一分句的knowing和no true light...nor even any tunnels由but连接作谓语；句尾that引导的定语从句修饰tunnels。
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