首页
登录
职称英语
Assuming that the engineering problems could be overcome, the production of
Assuming that the engineering problems could be overcome, the production of
游客
2024-01-01
24
管理
问题
Assuming that the engineering problems could be overcome, the production of a time machine could open up a Pandora’s box of causal paradoxes. Consider, for example, the time traveler who visits the past and murders his mother when she was a young girl. How do we make sense of this? If the girl dies, she cannot become the time traveler’s mother. But if the time traveler was never born, he could not go back and murder his mother.
Paradoxes of this kind arise when the time traveler tries to change the past, which is obviously impossible. But that does not prevent someone from being a part of the past.
Suppose the time traveler goes back and rescues a young girl from murder, and this girls grows up to become his mother. The causal loop is now self-consistent and no longer paradoxical. Causal consistency might impose restrictions on what a time traveler is able to do, but it does not rule out time travel per second.
Even if time travel isn’t strictly paradoxical, it is certainly weird. Consider the time traveler who leaps ahead a year and reads about a new mathematical theorem in a future edition of Scientific American. He notes the details, returns to his own time and teaches the theorem to a student, who then writes it up for Scientific American. The article is, of course, the very one that the time traveler reads. The question then arises: Where did the information about the theorem come from? Not from the time traveler, because he read it, but not from the student either, who learned it from the time traveler. The information seemingly came into existence from nowhere, reasonlessly.
The bizarre consequences of time travel have led some scientists to reject the notion outright. Stephen W. Hawking of the University of Cambridge has proposed a "Chronology protection conjecture," which would outlaw causal loops. Because the theory of relativity is known to permit causal loops, chronology protection would require some other factors to intercede to prevent travel into the past. What might this factor be? One suggestion is that quantum processes will come to the rescue. The existence of a time machine would allow particles to loop into their own past. Calculations hint that the ensuring disturbance would become self-reinforcing, creating a runaway surge of energy that would wreck the wormhole. [br] The first paragraph intends to show ______.
选项
A、the time machine in the future would be feasible
B、the time machine in the future is just like the Pandora’s ox
C、the time machine in the future is still doubtful
D、the time machine in the future might cause murder
答案
C
解析
细节题型第一段第一句说:假定设计问题能够解决,时光机器的生产也会像打开潘多拉的盒子一样产生些偶然的似非而是的情况,随之举例;因此答案为C。
转载请注明原文地址:https://tihaiku.com/zcyy/3323466.html
相关试题推荐
WhentheErieCanalwasbuiltinthe1820’s,itwastheengineeringmarvelofit
Hisemotionalproblems______fromhisexperiencesasachild,Ithink.A、stemB、
Scientistshavealreadyfoundproblemsthatassociated______livingintheocean
Assumingthattheengineeringproblemscouldbeovercome,theproductionof
Assumingthattheengineeringproblemscouldbeovercome,theproductionof
Assumingthattheengineeringproblemscouldbeovercome,theproductionof
Assumingthattheengineeringproblemscouldbeovercome,theproductionof
Assumingthattheengineeringproblemscouldbeovercome,theproductionof
Hisemotionalproblems______fromhisexperiencesasachild,Ithink.A、stemB、fl
WhentheErieCanalwasbuiltinthe1820’s,itwastheengineeringmarvelofit
随机试题
【教学过程】 (一)导入新课 上节课我们讲述了一个小男孩和他的小伙伴一起玩耍的故事,最后只留他自己在悬崖上,孤苦无依,那他是怎么下去的呢?在看到《走一步
对抗震设防地区建筑场地液化的叙述。下列何者是错误的?( )A.建筑场地存在液化
A.-2或3 B.2或3 C.2或-3 D.-2或-3
患者,女性,58岁,脑梗死后2周,洼田饮水试验时一饮而尽,有呛咳,该检查结果属于
对于间质性肾炎,最有价值的诊断检查手段是A.肾组织学检查 B.尿沉渣检查 C
开放式基金的赎回费在扣除手续费后,余额不得低于赎回费总额的(),并应当归入
保险的职能主要包括()。A:代理和咨询 B:分散危险 C:组织经济补偿
目前江西生态示范区的面积占全省国土面积的57.3%,全省森林覆盖率达60.05%
当前,流生问题与()问题这两种倾向妨碍了教育目的的实现和基础教育质量的提高。
下列有关药品卫生的叙述错误的是A.各国对药品卫生标准都作严格规定 B.药剂被微
最新回复
(
0
)