You can “move” in time without moving in space, but you cannot move in space without moving in time, because your speed is limited by the speed of light.
If you can move in space without moving in time, there can be a continuum of multiple identical copies of yourself at a same time across a region of space.
— Me@2011.09.22
2013.06.12 Wednesday (c) All rights reserved by ACHK
We must not attach knowledge to the mind; we have to incorporate it there.
— Michel de Montaigne
An important piece of knowledge should not be only a piece of application software.
Instead, it should be part of the operating system.
— Me@2011.01.08
— Me@2013.06.12
2013.06.12 Wednesday (c) All rights reserved by ACHK
Meaningful 10.4
這段改編自 2010 年 4 月 3 日的對話。
（安：我現在終於明白，為何每次旅行結束時，都會格外空虛，因為沒有「下一步」。）
這個講法不太切合實際，因為每次去旅行，你總會學懂了一些新知識；體驗了一些新經歷；認識了一些新朋友。你應該會感受到一點點充實。
（安：旅行的過程，我固然很開心。但是，越來越接近假期結束，我就越不安。「空虛感」很快就會完全蓋過了「滿足感」。「一點點充實」面對「一大堆空虛」，毫無還手之力。
可能，那是因為我感受到工作的來臨，厭惡上班。）
— Me@2013.06.11
2013.06.12 Wednesday (c) All rights reserved by ACHK
Physics Town 