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
2025-02-01
31
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] According to the passage, ______ plays an important role which cannot be ignored.
选项
A、the speed of time travel
B、the relationship between people
C、the destination of time travel
D、the length of time travel
答案
A
解析
推断题型通读全文,假设时间旅行者能在现在、过去甚至未来(见文中的各个例子)任意来往,那么显然时间旅行的速度是惊人的,因此答案为A。
转载请注明原文地址:https://tihaiku.com/zcyy/3938028.html
相关试题推荐
Assumingthattheengineeringproblemscouldbeovercome,theproductionof
Assumingthattheengineeringproblemscouldbeovercome,theproductionof
Assumingthattheengineeringproblemscouldbeovercome,theproductionof
Assumingthattheengineeringproblemscouldbeovercome,theproductionof
Hisemotionalproblems______fromhisexperiencesasachild,Ithink.A、stemB、fl
WhentheErieCanalwasbuiltinthe1820’s,itwastheengineeringmarvelofit
WhentheErieCanalwasbuiltinthe1820’s,itwastheengineeringmarvelofit
Hisemotionalproblems______fromhisexperiencesasachild,Ithink.A、stemB、fl
Paperproducedeveryyearisthreetimesheavyoftheworld’sproductionofvehi
WhentheErieCanalwasbuiltinthe1820s,itwastheengineeringmarvelofits
随机试题
[img]2019m11x/ct_epekm_epelist_0401_201910[/img][br][originaltext]I’dliket
[audioFiles]2017m2x/audio_ezfm_029_201702[/audioFiles]MP3PlayersDespi
Thebookgivesyouagood______ofwhatlifewaslikeinJapaninthe19thcentur
除机关、团体、事业单位的其他单位应当至少()进行一次防火检查。A.每月 B
实践中常用查全率和查准率来衡量专利检索的效果。而查全率常用来衡量检索的( )。
最常见于风湿性二尖瓣狭窄患者的心律失常是A.房性早搏 B.心房颤动 C.窦性
崔颢的《黄鹤楼》与李白的《登金陵凤凰台》两首诗谁高谁下,历代文人纷争不已,但见仁
下列说法中,正确的是( )。A.大赦既赦其刑,又赦其罪B.特赦只赦其刑
32,8,4,1,12,()。A.2 B.3 C.4 D.11
女,55岁,厌食、乏力3个月,无痛性进行性黄疸1个月,体重明显减轻。查体:皮肤及
最新回复
(
0
)