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发表于 2012-8-14 00:55
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其实比饶毅更牛的回复是 Upenn 的 LAI JIANG
2 n2 h% A. j/ Q' m: h/ Y0 { A如果是中国长大的,英语能到这种程度真是很不简单。 h) A; L# v% v0 y% a0 C
- w) D) Q3 E4 {+ L5 Fhttp://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html
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! M& d8 i' x g* h7 RFROM LAI JIANG, Department of Chemistry, University of Pennsylvania
! ^ z7 L9 l2 O5 z0 L' y
8 d' d. S' s0 w: z. c# cIt is a shame to see Nature — which nearly all scientists, including myself0 u( N6 ?, w) G( o1 _
, regard as one of the most prestigious and influential physical-science
& D% \1 _+ p& Z1 K h$ \magazines — publish a thinly veiled biased article like this. Granted, this
; q/ I3 D8 O+ ^0 v( Iis not a peer-reviewed scientific article and did not go through the
# E- ]/ J7 B. i% h) dscrutiny of picking referees. But to serve as a channel for the general& e5 O4 A- k( }6 c' P: G. B! L3 ?
populace to be in touch with and appreciate science, the authors and editors# {# Z- r* h0 q( C0 @
should at least present the readers with facts within the proper context,
5 b" \1 m$ u/ {6 twhich they blatantly failed to do.$ j. p- ]: g: U$ P
8 ~+ ^! T% M3 m1 rFirst, to identify Ye’s performance increase, Ewen Callaway compared her
2 R/ Z( t3 e, e1 T kOlympic 400-metre IM time with her performance at the World Championships in) r5 K( M; U# m1 z
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “- F% f7 w; E7 l
anomalous” improvement of around 7 seconds (6.72 s). In fact, her previous6 F6 i/ B7 z' p/ z+ t
personal best was 4:33.79 at the Asian Games in 2010. This leads to an
* X( @! {: D# `2 w9 z# Oimprovement of 5.38 seconds. In a sporting event in which 0.1 s can be the- s% }* y( d# w: l0 O
difference between the gold and silver medal, I see no reason for 5.38 s to
+ l+ m {! w7 n1 V; O; F% ~be treated as 7 s.& E3 t. J7 w" i" Y6 f
. l- J+ l. r9 H" d2 rSecond, as previously pointed out, Ye is only 16 years old and her body is
( F2 J& { h9 S) Q I9 x; A$ Ostill developing. Bettering oneself by 5 seconds over two years may seem
' e4 F) Q, ~0 f4 nimpossible for an adult swimmer, but it certainly happens among youngsters.
T) i% i, h! L8 g/ p7 L2 eAn interview with Australian gold medallist Ian Thorpe revealed that his 400
$ k/ \& D) X j% W* n2 Y# t. v5 w-metre freestyle time improved by 5 seconds between the ages of 15 and 16.3 M* d$ b5 j. o
For regular people, including Callaway, it may be hard to imagine what an
3 a# D) h' x% B8 k- n' relite swimmer can achieve as he or she matures and undergoes scientific and' t( Y& N' e* o. w" }
persistent training. But jumping to the conclusion that it is “anomalous”
9 Y( j; J5 Y( t% s& d8 @based on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.
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Third, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook
/ ^7 n( R! `- Qexample of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in
$ G8 [6 @& ?% ^the last 50 metres, but Lochte had a huge lead in the first 300 metres, so
/ y6 B/ n: R! I1 H0 Z; i1 t1 h( mhe chose not to push himself too hard and to conserve his energy for later
0 X$ N3 z, I- R! J) b7 Tevents (whether this conforms to the Olympic spirit and the ‘use one’s
8 x# H, G e# [" l* d- pbest efforts to win a match’ requirement that the Badminton World
9 u- ?4 L$ U; c) Q; GFederation recently invoked to disqualify four badminton pairs is another
+ w$ ^3 m0 U: Ntopic worth discussing, though probably not in Nature). Ye, on the other
! N7 G7 z( p* s2 Vhand, was trailing behind after the first 300 metres and relied on freestyle7 L! b2 q+ ~3 p1 g/ Q: {
, in which she has an edge, to win the race. Failing to mention this
+ L/ e2 N9 t1 rstrategic difference, as well as the fact that Lochte is 23.25 seconds
) p# P) u, N( e+ d4 v! E$ Tfaster (4:05.18) than Ye overall, creates the illusion that a woman swam
0 D; G1 a: j# Jfaster than the best man in the same sport, which sounds impossible. Putting
% E0 w" t7 p1 Caside the gender argument, I believe this is still a leading question that! Y( i8 u1 j, a: @* K
implies to the reader that there is something fishy going on.- [ J# a+ Q) X
F4 d: g! f, v& l5 \0 F. SFourth is another example of cherry-picking. In the same event, there are& A" g2 g7 u; K8 y! Z2 [( `& S
four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93
: i0 W; m% C% {/ T0 B/ N3 b) i& ?s) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s' a& k4 {( \ p9 k n) L
), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns
/ Y. q# |% r g7 |2 q7 wout, if we are just talking about the last 50 metres in a 400-metre IM,
$ |9 g c' h2 y* s& ?Lochter is not the example I would have used if I were the author. What kind
: u9 [" j2 D% Y: n7 l6 Iof scientific rigorousness is Callaway trying to demonstrate here? Is it
7 V+ R3 ^ g; z2 _logical that if Lochter is the champion, we should assume that he leads in
/ w( ?& X6 m2 i. X0 xevery split? That would be a terrible way to teach the public how science$ ^- |6 T8 }6 n
works.
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Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and/ l- N, f3 _0 f
implies that a drug test cannot rule out the possibility of doping. Is this0 C9 D' u1 T0 s9 `: G. q+ c$ b
kind of agnosticism what Nature really wants to teach its readers? By that
0 d: J5 A' \# \8 _standard, I estimate that at least half of the peer-reviewed scientific
+ U: e1 I0 [- _7 Z: e( |, z6 N& Hpapers in Nature should be retracted. How can one convince the editors and% z+ _! f9 n: L5 R C2 y4 i8 ?
reviewers that their proposed theory works for every possible case? One
. G8 ]: o2 a4 Y3 ycannot. One chooses to apply the theory to typical examples and to
# X/ `9 D* w" D Mdemonstrate that in (hopefully) all scenarios considered, the theory works
2 Q4 g* n' I( D5 m) B/ qto a degree, and that that should warrant publication until a counterexample
8 l& M: u& n8 [ S& X- Sis found. I could imagine that Callaway has a sceptical mind, which is
' f6 F! G# o I6 o' V3 U. y4 {3 D% P) bcrucial to scientific thinking, but that would be put to better use if he7 h8 _ r1 @' G, x$ ~% N+ I, G
wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly8 J4 q3 j7 k r4 B3 O
advanced, non-detectable drug that the Chinese have come up with in the+ ^9 V4 z5 J0 G0 J
past 4 years (they obviously did not have it in Beijing, otherwise why not
' f* Z6 B( _9 {6 v) {9 Quse it and woo the audience at home?), based on data and rational derivation4 o6 |& I& S5 w2 h
. This article, however, can be interpreted as saying that all athletes are
( ]8 _7 s6 m' {. q: Sdoping and the authorities are just not good enough to catch them. That may! n# x( ?1 I3 T* d, P
be true, logically, but definitely will not make the case if there is ever a
, m$ d; P$ {8 S6 C3 O" Ahearing by the governing body for water sports, FINA, to determine if Ye
3 e8 f! |, L7 xhas doped. To ask whether it is possible to obtain a false negative in a
& r$ ?3 v2 R2 q: {; \drug test looks like a rigged question to me. Of course it is possible:* W( X# k m1 E1 b$ h, _+ D
other than the athlete taking a drug that the test is not designed to detect
5 i+ ]5 |" V% }( A# S! q$ ^1 [! c [, anyone who has taken quantum 101 will tell you that everything is+ ?6 `' A K# I+ c% j: J8 w
probabilistic in nature, and so there is a probability that the drug in an
8 |7 a5 ^: i) C1 Hathlete’s system could tunnel out right at the moment of the test. A slight& J C5 |1 P! c" [) g2 r
chance it may be, but should we disregard all test results because of it?
9 `7 I& x) V, e" O C2 E( j. U. cLet’s be practical and reasonable, and accept that the World Anti-Doping
& Q2 n+ V8 ]4 J9 \agency (WADA) is competent at its job. Ye’s urine sample will be stored for1 M t' \) j- n. s
eight years after the contest for future testing as technology advances." J' _6 Z! f+ @
Innocent until proven guilty, shouldn’t it be? J2 t6 R9 @5 r+ x s/ ^: P. ?; }
; z" L I8 y4 X i+ kSixth, and the last point I would like to make, is that the out-of-
3 r& Q L7 `' L% \8 W: t9 |competition drug test is already in effect, which Callaway failed to mention
) g$ s1 O) k; D8 f- y* p0 |" b. As noted in the president of WADA’s press release, drug testing for* a" {5 z+ ~0 W+ j$ y) v
Olympians began at least six months before the opening of the London
1 v6 i5 @" U. ?$ i+ _, r7 {Olympics. Furthermore, 107 athletes have been banned from this Olympics for
7 X8 X1 e/ {$ F- D. y# L( Z. Wdoping. That may be the reason that “everyone will pass at the Olympic
6 d% `3 h4 Z8 q8 V, I' j3 h6 Hgames. Hardly anyone fails in competition testing” — those who did dope
( l0 f1 h8 a! a+ z$ F. f7 X! T6 p! ]have already been caught and sanctioned. Callaway is free to suggest that a! d- `! k% } P
player could have doped beforehand and fooled the test at the game, but this
6 U8 w7 @6 W, f. ypossibility is certainly ruled out for Ye.
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( V8 S- H9 b4 Y1 C& \$ t" ^" VOver all, even though Callaway did not falsify any data, he did (0 C& O5 m3 y6 |7 y* x. \
intentionally or not) cherry-pick data that, in my view, are far too4 N6 i( ]6 F* ~& I
suggestive to be fair and unbiased. If you want to cover a story of a
$ L8 L6 h- i, P6 y7 U4 S5 w. ~% qsuspected doping from a scientific point of view, be impartial and provide
2 p U! a# @/ M5 ^* v" K! aall the facts for the reader to judge. You are entitled to your. B7 z, _2 e0 k n4 S+ q
interpretation of the facts, and the expression thereof in your piece,) Q$ S' L% F! S0 f& D
explicitly or otherwise, but showing only evidence that favours your# b }/ k: i. d: T5 U1 |' h$ K
argument is hardly good science or journalism. Such an article in a journal6 i+ n; ?5 f4 K
such as Nature is not an appropriate example of how scientific research or
" g5 Q$ c ^' B9 C w7 Yreporting should be done. |
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