All that we really need to plot out the
future of our universe are a few good measurements. This does not mean that we
can sit down today and outline the future course of the universe with anything
like certainty. There are still too many things we do not know about the way the
universe is put together. But we do know exactly what information we need to
fill in our knowledge, and we have a pretty good idea of how to go about getting
it. Perhaps the best way to think of our present situation is to imagine a train coming into a switchyard. All of the switches are set before the train arrives, so that its path is completely determined. Some switches we can see, others we cannot. There is no ambiguity if we can see the setting of a switch: we can say with confidence that some possible futures will not materialize and others will. At A. Train engineers. B. General audiences. C. Professors of statistics. D. Young children. 我来回答: 提交
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