Fw: [轉錄] 中華五千年是是不是一坨屎?
※ [本文轉錄自 PublicIssue 看板 #1RBiOTf5 ]
作者: kuopohung ((風之過客)在場的缺席) 看板: PublicIssue
標題: Fw: [轉錄] 中華五千年是是不是一坨屎?
時間: Sun Jun 24 06:13:47 2018
※ [本文轉錄自 historia 看板 #1Pux-fwl ]
作者: kuopohung ((風之過客)在場的缺席) 看板: historia
標題: Re: [轉錄] 中華五千年是是不是一坨屎?
時間: Mon Oct 16 04:05:58 2017
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我可以確定你不懂邏輯
邏輯並不涉及真假問題,而只是推論結構是否合理
我舉兩個例子;
a.
1.所有的橡樹都有根
2.所有長在英國的樹都有根
----
英國有生長著橡樹
--------------------------------------------
這裡三句話都是對的,但是卻不是有效論證
語句邏輯翻譯為;
1. P-->Q
2. R-->Q
----
R-->P
b.
1.如果地球是圓的,則東西都會從上面掉出去
2.在地球上面的東西並不會掉出去
----
地球不是圓的
雖然結論和大前提和結論是錯的,但這確是一個有效推論
邏輯語句的翻譯為;
1. P-->Q
2.~Q
----
~P
至於我提到的漢文化無法精確的用邏輯描述
語句邏輯有五大符號
且,或,非,等價,如果...則(connective)
其中的如果...則(一個馬蹄形符號),沒辦法用很精準的中文翻譯
甚至說中文在特殊情況下,且或的翻譯要看語意脈絡才可以判斷要如何翻譯
所以漢文是不精準的語言
而量限邏輯則是把每一個句子和字元全部翻譯成邏輯符號
(我突然忘了bbs不支援邏輯符號的格式)
漢文化並沒有產生這類的推論形式
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※ 文章網址: https://www.ptt.cc/bbs/historia/M.1508097961.A.EAF.html
※ 編輯: kuopohung (111.255.9.210), 10/16/2017 04:26:26
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※ 編輯: kuopohung (111.255.9.210), 10/16/2017 04:50:38
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※ 發信站: 批踢踢實業坊(ptt.cc)
※ 轉錄者: kuopohung (111.255.248.168), 06/24/2018 06:13:47
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※ 發信站: 批踢踢實業坊(ptt.cc)
※ 轉錄者: A6 (218.1.232.78), 07/13/2018 16:23:17
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