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發表於 2017-5-30 17:54:42 | 顯示全部樓層 |閱讀模式
假設性問題,
嘗試性解決。



Re:變心 (2003-01-11 12:44:34)
《論現今東方女子之十大優點》

李天命 (2003-01-12 14:40:00)
《論十三點》
首先撇開可以省略之點……

然後思考非常重要之點︰?!

最後探索最最重要之點∵
(論畢)



Re:Faustus (2002-12-20 11:45:20)
Backward Reasoning
“… Suppose a teacher tells the class that he will give them a surprise quiz in the following week. Now, the teacher cannot give the quiz on Friday because when it is Thursday, the whole class will know for sure that the quiz will be on Friday, so it won't be a "surprise" anymore. But the teacher cannot give the quiz on Thursday because the quiz cannot be on Friday (for reason stated above) and when it is Wednesday, the whole class will know for sure that the quiz will be on Thursday, so it won't be a "surprise" either. Similarly, the teacher cannot give the quiz on Wednesday, Tuesday, or Monday. The conclusion is that a teacher can never give a real "surprise" quiz. What is wrong about this (backward) reasoning? ”

李天命 (2002-12-20 15:20:00)
If the students are convinced by this reasoning and accept the conclusion // that a teacher can never give a real "surprise" quiz//,then the teacher can give a quiz on Monday or Tuesday or ...or Friday (or even Saturday or Sunday, by calling them to come to school for a quiz), to their real surprise. ^^



Re:征服者 (2002-11-09 17:34:23)
「哲學的意思就只是愛思考
有好奇心吧
不要以為是什麼怪物,我可以和你說,數學才是吃人的怪物」

李天命 (2002-12-21 14:11:00)
最偉大的數學家也不能征服數學這隻怪物;
最聰明的哲學家則要對這隻怪物略有所知,
然後保持安全距離。



Re:張海澎 (2002-12-04 07:16:00)

《"美女不美"的證明----給好色一代男》

命題: 美女不美

證明:

1.得不到的美女不算美
2.已得到的美女不再美
3.或者得到,或者得不到
4.故美女不美

李天命 (2002-12-04 10:25:00)

命題:女性皆美

證明︰

1.得不到手的女性特別美
2.得到手的女性有增值美
3.或者得到,或者得不到
4.故︰女性皆美



Re:心沉 (2002-11-07 19:18:34)
《李博士,有人話你詭辯呀!》

李天命 (2002-11-08 17:25:00)
 ?



Re:張海澎 (2002-11-24 14:56:00)
「正如亞里士多德是邏輯學之父,李天命是分析邏輯之父。」

李天命 (2002-12-22 18:30:00)
 !

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