Existence, 2

Existence is not a property of an object. It is a property of properties.

For example, when we say “X does not exist”, we do not mean that “there is an X and X has a property of non-existence.” Instead, existence is a property of the collection of other objects.

Existence is a property of the system that X is in. 

X exists

= the system has the component X

= the system has the property of “having X”

X doe not exist

= no systems have the component X

= no systems have the property of “having X”

— Me@2012.10.11

2012.10.12 Friday (c) All rights reserved by ACHK

Memory 5.3

這段改編自 2010 年 4 月 3 日的對話。

大明比小明聰明。小明在很多時候,處事能力沒有大明那麼高。所以,大部分情況下,大明的考試分數,都會比小明好。小明發覺沒有辦法,單憑智力去戰勝大明,長期心有不甘。於是,有一次,小明想暗算大明。但是,由於大明比小明足智多謀,他在事前就已經可以,化解了小明的詭計。

這篇文章,內廢而外不廢。

這篇文章,其實就好像「變形金剛」中的機械人。首先,原本只有一隻。然後,我把它複製成多四隻。接著,再把那五隻機械人,變成五種不同的形態。那樣,就可以把它們合體,變成一隻「大機械人」。

— Me@2012.10.12

2012.10.12 Friday (c) All rights reserved by ACHK

Muscles work

Why does holding something up cost energy while no work is being done?

This is about how your muscles work — the’re an ensemble of small elements that, triggered by a signal from nerves, use chemical energy to go from less energetical long state to more energetical short one. Yet, this obviously is not permanent and there is spontaneous come back, that must be compensated by another trigger. This way there are numerous streches and releases that in sum gives small oscillations that create macroscopic work on the weight.

— This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.

— Physics Stack Exchange

— answered Dec 16 ’10 at 11:52

— mbq

2012.10.12 Friday ACHK