很好的问题，而且其物理内涵实际上并不像有些人以为的那样简单。以下我尽量避免使用公式和术语，试图用大多数人能理解的方式来进行回答（提示：这在很多细节上是不严谨的，但是不影响主旨）。 首先需要知道，所谓“物体运动不能超过光速”只是一种科普式的简化。在相对论里，“速度”这个概念并不是我们日常想象的那样，简单地用“距离除以时间”。因为相对论的核心观念就在于，什么叫做“距离”，什么叫做“时间”，这在“不同人的眼里”是不一样的。用相对论的话说，在不同的“参考系”里面，“距离”和“时间”的计算方式都会不同，只有先确定…

This proposal outlines a project plan for the migration of the text package from its current default encoding (UTF-16) to a new default of UTF-8. The lack of UTF-8 as a default in the text package is a pain point raised by the Haskell Community and many…

Eusociality (Greek εὖ eu 'good' and social) is the highest level of organization of sociality. It is defined by the following characteristics: cooperative brood care (including care of offspring from other individuals), overlapping generations within a colony…

过去十年间，Clear Linux 展现了其在 x86_64 硬件上不俗潜力，而且哪怕是在 AMD 平台上也表现出了出色的性能。但随着英特尔的成本削减和裁员行动，Clear Linux 即将终止开发。

A document format is a tool for sharing knowledge and, as such, should be as simple and accessible as possible in relation to the complexity of the document content itself. This remains true even when the format is based on an XML schema that is hidden from…

Airplane seats are getting smaller and smaller, clothes are unrecognizable after the second wash, and machines now answer our calls. Quality and care for craftsmanship seem to be things of the past

I've always been told that caching is a tool to make software faster. That, given some careful considerations to consistency, caching makes it so that when...

日本語で出しても英語で出しても反響のあったこのイラスト
労働の過酷さは万国共通なんだな......

This illustration, which resonated in both Japanese and English, really shows that the harshness of labor is universal......