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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
9 I$ W0 m3 e" L- J/ O' ~3 e. p如果是中国长大的,英语能到这种程度真是很不简单。
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http://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html
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FROM LAI JIANG, Department of Chemistry, University of Pennsylvania
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+ ]5 `. e" D! ^2 w1 z: F5 HIt is a shame to see Nature — which nearly all scientists, including myself4 n7 |0 o$ o0 m, e+ @
, regard as one of the most prestigious and influential physical-science7 G$ M8 k# E, Z M( G' |
magazines — publish a thinly veiled biased article like this. Granted, this- P4 b* g' q6 [# D4 Z
is not a peer-reviewed scientific article and did not go through the
' c! S m' _( b* xscrutiny of picking referees. But to serve as a channel for the general
: s% f! K0 F1 S, i/ ipopulace to be in touch with and appreciate science, the authors and editors' `% B& U' E) V
should at least present the readers with facts within the proper context,9 \0 H! {/ r. ^7 j. x" F9 O0 l
which they blatantly failed to do.9 ^$ {* R( K0 W2 r2 p0 r
$ G3 |& l$ K+ SFirst, to identify Ye’s performance increase, Ewen Callaway compared her
5 W4 |* j4 H* f' y: L8 s: W, _Olympic 400-metre IM time with her performance at the World Championships in9 s. ]% V; {9 J' P; L& K" L
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “
! B& D4 J2 ~9 r' G; L6 g9 Lanomalous” improvement of around 7 seconds (6.72 s). In fact, her previous V# S* K2 z" c/ f, l' h
personal best was 4:33.79 at the Asian Games in 2010. This leads to an
7 S# ~2 A" k0 C9 \+ [! v; g+ cimprovement of 5.38 seconds. In a sporting event in which 0.1 s can be the
0 e+ P2 h; [( {: s5 K; kdifference between the gold and silver medal, I see no reason for 5.38 s to, e5 X0 B. [9 |/ \9 _9 \8 | n* S
be treated as 7 s.( D1 g% ?0 Z$ r; T0 Q
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Second, as previously pointed out, Ye is only 16 years old and her body is
1 P" Y, T9 \9 F; ?still developing. Bettering oneself by 5 seconds over two years may seem
* U6 [( G, E# \, Kimpossible for an adult swimmer, but it certainly happens among youngsters.
, M+ i0 e. f' V4 E9 X; a7 oAn interview with Australian gold medallist Ian Thorpe revealed that his 400
; x8 G# L6 c: t# G/ r8 H-metre freestyle time improved by 5 seconds between the ages of 15 and 16.
0 R/ T. K2 Z9 Z% [4 GFor regular people, including Callaway, it may be hard to imagine what an# ]0 T7 X E1 ^3 d7 z
elite swimmer can achieve as he or she matures and undergoes scientific and u& S3 [7 j6 h3 x6 M! u
persistent training. But jumping to the conclusion that it is “anomalous”
, S0 h4 @" v/ rbased 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 textbook1 E$ P: ^8 r: B* M# }; C
example of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in$ }. N( M6 M" e- ^% n, \3 d% y
the last 50 metres, but Lochte had a huge lead in the first 300 metres, so
* J1 F! d& M. The chose not to push himself too hard and to conserve his energy for later; O+ p8 ~* c+ t* i+ g/ {
events (whether this conforms to the Olympic spirit and the ‘use one’s
& ]! ~4 w5 `( e+ @7 b7 s& }( _best efforts to win a match’ requirement that the Badminton World
9 g, j+ x4 W2 [ w8 l/ B! CFederation recently invoked to disqualify four badminton pairs is another. |' B$ y, X* R: N
topic worth discussing, though probably not in Nature). Ye, on the other. J8 A0 U/ \- ~6 T) q9 r
hand, was trailing behind after the first 300 metres and relied on freestyle# Z2 k4 t; l) D, K
, in which she has an edge, to win the race. Failing to mention this
& f$ V' [3 z$ Q+ Y4 Tstrategic difference, as well as the fact that Lochte is 23.25 seconds
( @/ `( }3 k. H( r; r: }4 Z: bfaster (4:05.18) than Ye overall, creates the illusion that a woman swam
5 I0 |1 X' t/ Z9 ~3 V; m% ffaster than the best man in the same sport, which sounds impossible. Putting0 A+ S+ e/ a9 }9 g
aside the gender argument, I believe this is still a leading question that
4 U' w: d: Y. L! r. pimplies to the reader that there is something fishy going on.% K# J# K: O6 @& E, F
7 a/ @4 W- x. C+ I& P" H R/ a# {Fourth is another example of cherry-picking. In the same event, there are" L0 \$ ]% p, p3 N7 Y6 z' Z! c* I& U: X
four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93
0 a8 {* g% c, \. Fs) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s
# p" n9 F6 Z* \+ `+ ]- u. w0 I), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns
2 Y# O ~7 L& t/ `out, if we are just talking about the last 50 metres in a 400-metre IM,
) [* _2 Q% L/ t: [0 ^Lochter is not the example I would have used if I were the author. What kind
" H7 B2 }& _. P0 X! Dof scientific rigorousness is Callaway trying to demonstrate here? Is it
1 n. N* _: D7 O7 q* Z3 zlogical that if Lochter is the champion, we should assume that he leads in" R6 |" V8 S7 Q1 p0 i; S8 V
every split? That would be a terrible way to teach the public how science1 J0 v$ G/ S. T9 ]
works.0 d& B: ^- t: y+ e5 O$ M
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Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and
! c1 Y- G0 p, d U8 y' {9 [# b/ B) Vimplies that a drug test cannot rule out the possibility of doping. Is this
$ J% t9 P% V" c7 [7 m! A9 P3 W1 ikind of agnosticism what Nature really wants to teach its readers? By that8 u* S; P6 a0 J
standard, I estimate that at least half of the peer-reviewed scientific0 l) e! @+ d( A, f
papers in Nature should be retracted. How can one convince the editors and
) Z2 O' Q) R _9 p' h' `1 v, A) Q# jreviewers that their proposed theory works for every possible case? One6 H$ y; T, D" K8 S
cannot. One chooses to apply the theory to typical examples and to
& I7 p, N r( S* Rdemonstrate that in (hopefully) all scenarios considered, the theory works& K. D) n" M2 k8 Z
to a degree, and that that should warrant publication until a counterexample9 q' I1 n/ p8 P$ j [
is found. I could imagine that Callaway has a sceptical mind, which is5 t! v9 R- ]8 u: O0 v; ~4 f
crucial to scientific thinking, but that would be put to better use if he
! B* L$ P E( ?' C, d4 p, ?$ P' r# `wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly
j9 q5 N" a. U3 h: B' }3 Madvanced, non-detectable drug that the Chinese have come up with in the8 S$ ?; u! |! F6 \5 ~- I
past 4 years (they obviously did not have it in Beijing, otherwise why not
0 m- X, T# K; t* U8 Zuse it and woo the audience at home?), based on data and rational derivation5 `& a' \8 q5 Z7 F# m
. This article, however, can be interpreted as saying that all athletes are
7 h, n' M: L: x) N1 rdoping and the authorities are just not good enough to catch them. That may
5 r0 i8 r. F. M; z1 t1 ebe true, logically, but definitely will not make the case if there is ever a' E) Y- z: g0 c2 M. L- W% Z* z
hearing by the governing body for water sports, FINA, to determine if Ye
4 I+ E2 B" P) h- V( @" _has doped. To ask whether it is possible to obtain a false negative in a
( i7 i5 \. T! U8 i- g9 idrug test looks like a rigged question to me. Of course it is possible:
: D, D/ H- g+ h' n8 gother than the athlete taking a drug that the test is not designed to detect
& E+ d% H, e4 c r7 N& ]+ n, anyone who has taken quantum 101 will tell you that everything is$ ?7 m4 K7 u. m" j- ~
probabilistic in nature, and so there is a probability that the drug in an9 x/ X' A; _3 [
athlete’s system could tunnel out right at the moment of the test. A slight2 H- N" `9 p" C- W7 Z
chance it may be, but should we disregard all test results because of it?6 `/ @: p% {# w0 e* L# Q* _ l
Let’s be practical and reasonable, and accept that the World Anti-Doping
# q. e* ` W5 Y# r+ {+ Q% oagency (WADA) is competent at its job. Ye’s urine sample will be stored for
3 x+ n# v' \* k m/ }) @eight years after the contest for future testing as technology advances.
: V; {& |* e; l4 X5 nInnocent until proven guilty, shouldn’t it be?
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Sixth, and the last point I would like to make, is that the out-of-
; [ W* s2 t' R: _0 Zcompetition drug test is already in effect, which Callaway failed to mention7 b3 d0 q+ h& e M
. As noted in the president of WADA’s press release, drug testing for
. W3 Y2 v6 ~' @1 jOlympians began at least six months before the opening of the London
3 @; e) k+ \$ ? ZOlympics. Furthermore, 107 athletes have been banned from this Olympics for
2 e1 s5 D1 n5 \+ ?doping. That may be the reason that “everyone will pass at the Olympic# c+ V/ `4 q$ w( a2 J
games. Hardly anyone fails in competition testing” — those who did dope
5 R" n% G- y+ G) ~" {3 {5 lhave already been caught and sanctioned. Callaway is free to suggest that a# z) w. Q! n( G) f6 V. z- ~
player could have doped beforehand and fooled the test at the game, but this
7 X, ?' o( y# D: ~ _) ypossibility is certainly ruled out for Ye.
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Over all, even though Callaway did not falsify any data, he did (
3 C3 b9 N! e- ~" b0 k( pintentionally or not) cherry-pick data that, in my view, are far too! P- N! o& p. ^' R. P
suggestive to be fair and unbiased. If you want to cover a story of a6 U5 d v# s* E. S+ C
suspected doping from a scientific point of view, be impartial and provide
3 g: Y* K; ^0 X3 ` ^1 e* iall the facts for the reader to judge. You are entitled to your
# K( G! d) D: V2 Ointerpretation of the facts, and the expression thereof in your piece,
v4 h7 R) l. a8 c5 d! K/ r5 Uexplicitly or otherwise, but showing only evidence that favours your
" E) u# q7 X; B7 Wargument is hardly good science or journalism. Such an article in a journal+ A1 X6 N& y: _/ B& X8 p$ T
such as Nature is not an appropriate example of how scientific research or
' s- D& H s' O2 P# ]: greporting should be done. |
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