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本帖最后由 bigsnail 于 2012-6-7 11:17 编辑
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. k6 Y6 _* F& ~8 lopen your mouth and wash it with detergent6 O# j: d$ j/ X' S
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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.
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And remember: 8 u* E; E" t) J4 {. U8 T0 f
"there is no evidence that A holds" $ Y' {2 q* \0 j" `0 H# Z t
does NOT mean & |% l2 |7 |- c$ L. {, G
"there is evident that A does not hold".
% N- `6 @. I) z' BIn fact, A could hold. 5 y6 ^; C# t+ L2 e3 e( l* P
It's a matter like observability vs objective existence.: Y# C0 M b d6 _
So what you say doesn't constitute a refutation.
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! ]* e. D t, S% W0 I9 \9 u+ tIt's mainly by argumentation. See for example:
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' N: h7 s6 A' `6 n. m* X, T"Does the death penalty cost less than life in prison without parole?"5 l, r7 H$ `8 Y2 v$ V2 n
in
: s. E J- G6 {5 j- w& Ahttp://deathpenalty.procon.org/view.answers.php?questionID=0010009 x) Z+ T. ]* u6 B" F' }2 K6 i
7 t0 R7 i' f7 I! |. DRemember, things are more complicated than what you think.1 N& G/ d4 m$ |6 E: Q) n
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