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本帖最后由 bigsnail 于 2012-6-7 11:17 编辑 7 q( O8 H2 A& u- [
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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.: o7 p9 K& ?" Q0 t/ }' u/ T& w( K
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And remember: + j1 u& X- B3 u+ x
"there is no evidence that A holds"
1 s2 V/ a- I: U; ], \5 K7 ldoes NOT mean
' ~& E. Z3 V" }$ P* _"there is evident that A does not hold". " t" ?' U; ^7 ]3 b: p1 f5 h6 N( J" B
In fact, A could hold.
% n2 I W/ m( J4 i9 K3 I9 NIt's a matter like observability vs objective existence.
3 z* F. C3 L- W2 b( eSo what you say doesn't constitute a refutation.
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It's mainly by argumentation. See for example:: ?$ m. a) V- `/ d& o
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"Does the death penalty cost less than life in prison without parole?"
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% L! I+ \9 D: R; X5 a; f, q6 ohttp://deathpenalty.procon.org/view.answers.php?questionID=001000& m+ ]! Y. `9 S7 r. g
% x( U; m e6 A& f. FRemember, things are more complicated than what you think.
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