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本帖最后由 bigsnail 于 2012-6-7 11:17 编辑 2 Q; E% e% R) y4 g/ M( L8 N
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open your mouth and wash it with detergent6 k- i1 W% ^0 e- |$ a( D' Z9 T
P! U+ a, I' @1 P( s& b/ Zsure there is no rigorous statistical evidence because there is no way to manipulate in the experiment so as to fully justify the causality.. y) D; O7 v1 s4 X4 A
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And remember:
& H0 M6 g# r& t, } w: L"there is no evidence that A holds" / o) \) I2 O: ? e$ V0 g
does NOT mean ' a7 O. Y& N8 c& Y
"there is evident that A does not hold". 8 y0 K0 b# O5 i' q) o5 C; p
In fact, A could hold. ) ~6 d5 r; `6 G
It's a matter like observability vs objective existence.( h: l: Q; p9 i" Q/ V
So what you say doesn't constitute a refutation.
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8 B) Y- L' O2 b1 y$ i' yIt's mainly by argumentation. See for example:
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"Does the death penalty cost less than life in prison without parole?"
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6 F& V" r9 D; P' M" mhttp://deathpenalty.procon.org/view.answers.php?questionID=0010009 B I+ G+ T# A& N9 R
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Remember, things are more complicated than what you think." [! N% d5 j6 v# f
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