Nominals don't provide criteria of identity
Nominals don't provide criteria of identity
复制标题
名词不提供身份标准
DOI：
10.1515/9783110226546.9
复制
发表时间：
2008
影响因子：
0.8
通讯作者：
C. Barker
中科院分区：
文献类型：
--
作者：
C. Barker
或者，也许它们都是同一个电子。1948年，约翰·阿奇博尔德·惠勒在与他的学生理查德·费曼的电话交谈中提出了一个令人愉快的假设，即宇宙中只有一个电子。单个粒子在时间上来回穿梭，编织出一条令人难以置信的错综复杂的“世界线”。在粒子的世界线穿过我们所感知的时空平面的每一点，如果它在时间上向前移动，它在我们看来就像一个电子，如果它在倒退，它就像一个正电子。所有这些表象的总和构成了物质宇宙。这就是为什么所有的电子都有相同的质量和电荷：因为它们都是相同的电子，总是等于它自己。
Or else maybe they are all the selfsame electron. In 1948 John Archibald Wheeler, in a telephone conversation with his student Richard Feynman, proposed the delightful hypothesis that there is just one electron in the universe. The single particle shuttles forward and backward in time, weaving a fabulously tangled ”world line.” At each point where the particle’s world line crosses the spacetime plane that we perceive as ”now,” it appears to us as an electron if it is moving forward in time and as a positron if it is going backward. The sum of all these appearances constructs the material universe. And that’s why all electrons have the same mass and charge: because they are all the same electron, always equal to itself.