挑燈看劍
Wednesday, September 15, 2010
Logic
甲:羅素論Gregory The Great,"...the most effective men of action are often intellectually second-rate"。
乙:So what?
甲:會不會是我太intellectual,以致缺乏行動,所以一無所成?
乙:
(p -> q) & ~q 能推出 ~p,但
(p -> q) & ~p 並不能推出 ~q,你缺乏行動不代表你intellectually first-rate,你最大可能只是缺乏行動並且intellectually third-rate。
甲:...
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