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本帖最后由 bigsnail 于 2012-6-7 11:17 编辑 : j! I. f. N0 d) _6 I# h
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open your mouth and wash it with detergent
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sure there is no rigorous statistical evidence because there is no way to manipulate in the experiment so as to fully justify the causality.* Y) `1 I7 X% o+ M5 v7 _( \+ o
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And remember: ; `) @! U9 @1 g" U1 R6 s
"there is no evidence that A holds"
- e6 g8 G- N7 `2 `4 fdoes NOT mean , b' C# j# i9 U1 E
"there is evident that A does not hold".
6 s; |8 b/ Y- Z! Z; C# [$ IIn fact, A could hold. 0 Z1 j1 P/ d2 j) f7 l; |2 u# l* e
It's a matter like observability vs objective existence./ [2 `7 o N! T; Y' J8 i
So what you say doesn't constitute a refutation.
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It's mainly by argumentation. See for example:
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% |9 n; G& \ `: q"Does the death penalty cost less than life in prison without parole?"
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% F. t/ h2 ^9 D/ Phttp://deathpenalty.procon.org/view.answers.php?questionID=001000- N' l7 U. B; ]4 z5 j* k
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Remember, things are more complicated than what you think.
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