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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) y* l7 G" W) b/ p' g- a
如果是中国长大的,英语能到这种程度真是很不简单。/ E8 f0 t/ w$ E8 v2 @6 w
% a; K1 ~6 ?" vhttp://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html( V* h' T4 Q0 ~
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FROM LAI JIANG, Department of Chemistry, University of Pennsylvania
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! M. W U& u. H) i7 ?; NIt is a shame to see Nature — which nearly all scientists, including myself
( a( G, X1 \4 L; o" z9 v# p, regard as one of the most prestigious and influential physical-science0 p" q& `0 o: t8 K0 P
magazines — publish a thinly veiled biased article like this. Granted, this
% S) M4 p! E" l- i9 Tis not a peer-reviewed scientific article and did not go through the
* H# N& s; S* {, _8 I( b( dscrutiny of picking referees. But to serve as a channel for the general
1 e- n8 X$ i# O9 gpopulace to be in touch with and appreciate science, the authors and editors7 [' h2 k* H* W% w% G2 Y
should at least present the readers with facts within the proper context,0 c! y' d3 F( w, `4 z: G0 X
which they blatantly failed to do.
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First, to identify Ye’s performance increase, Ewen Callaway compared her
# Z9 z/ X; p6 v1 {Olympic 400-metre IM time with her performance at the World Championships in% P" J$ {/ v$ q4 a# Z6 f& l: F+ B
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “
' x$ k( G6 h2 C& R* \( T% y3 A* x# Vanomalous” improvement of around 7 seconds (6.72 s). In fact, her previous" j' }- O1 }$ ]7 h. g
personal best was 4:33.79 at the Asian Games in 2010. This leads to an
6 G0 t' q. j: j ]% F: Dimprovement of 5.38 seconds. In a sporting event in which 0.1 s can be the
- N8 {2 C- z6 H) y9 U8 \! Qdifference between the gold and silver medal, I see no reason for 5.38 s to+ ?, p+ f' V* U. d2 Q
be treated as 7 s.0 a8 r9 T( u0 J, F
4 e0 C* q, J/ S; K2 R; y$ }Second, as previously pointed out, Ye is only 16 years old and her body is9 G9 A: N# ~/ [% S1 t ?. y) W
still developing. Bettering oneself by 5 seconds over two years may seem
. R+ M- H _! t9 K7 Z& Simpossible for an adult swimmer, but it certainly happens among youngsters.
; u! t% |. |4 E3 L0 eAn interview with Australian gold medallist Ian Thorpe revealed that his 4000 T* E0 |. Q1 |' _2 S+ s( K
-metre freestyle time improved by 5 seconds between the ages of 15 and 16.' F" I* K/ p0 ]0 |3 p( |2 f7 S4 O
For regular people, including Callaway, it may be hard to imagine what an" A- V; _0 x( O. N
elite swimmer can achieve as he or she matures and undergoes scientific and
" d# h9 Q2 U- P& T( @persistent training. But jumping to the conclusion that it is “anomalous”
: h! u2 e0 U$ j7 R% obased on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.
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& `9 p) e Z- cThird, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook
1 @* }7 ^" g! bexample of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in
" C1 M6 s1 G& x* r4 Pthe last 50 metres, but Lochte had a huge lead in the first 300 metres, so8 a. `; C# U' Z( z' R. z% e
he chose not to push himself too hard and to conserve his energy for later9 Q& {1 p# G K
events (whether this conforms to the Olympic spirit and the ‘use one’s
" A( ?4 p4 g& }# ubest efforts to win a match’ requirement that the Badminton World& i( w) [1 v R# G! ?
Federation recently invoked to disqualify four badminton pairs is another
, y+ ]. B4 v5 V7 Ytopic worth discussing, though probably not in Nature). Ye, on the other
$ {1 m2 x3 J5 C; n, }: ? ehand, was trailing behind after the first 300 metres and relied on freestyle0 R" [; }% h% N7 b
, in which she has an edge, to win the race. Failing to mention this# P! W: S1 ], D: x
strategic difference, as well as the fact that Lochte is 23.25 seconds
/ ]$ W0 D8 k0 xfaster (4:05.18) than Ye overall, creates the illusion that a woman swam
& L5 `. @9 l2 `0 L5 a2 f& x: wfaster than the best man in the same sport, which sounds impossible. Putting
" C e2 h0 {* h6 G8 iaside the gender argument, I believe this is still a leading question that
& t' E. l K8 @0 Jimplies to the reader that there is something fishy going on.
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! ]7 O3 W: W- v) J9 Q" {+ u8 F2 OFourth is another example of cherry-picking. In the same event, there are
' Y& E- L( h& E- j, Mfour male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93
% A( s! _" u- l+ b3 Zs) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s
; T; k/ k( G' y3 [* B2 M. R), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns
, x7 |5 j+ D3 Sout, if we are just talking about the last 50 metres in a 400-metre IM,; E' x: ] s' L# ?( s, r
Lochter is not the example I would have used if I were the author. What kind( j5 \5 u+ g1 n4 J' g
of scientific rigorousness is Callaway trying to demonstrate here? Is it
: I5 `6 l5 ^# y+ {9 ulogical that if Lochter is the champion, we should assume that he leads in0 j: @8 ?/ i5 t( ~2 _9 e) x
every split? That would be a terrible way to teach the public how science
- J1 u9 J$ ~5 o) }! Q: {works.' F3 l: x. L3 o% z! O/ n& _
/ `. Z, u7 p2 O: w) v9 uFifth is the issue I oppose the most. Callaway quotes Ross Tucker and
2 o! F/ ]: |3 E/ i9 Limplies that a drug test cannot rule out the possibility of doping. Is this
" s5 s5 i8 A1 i6 y7 [- x- [kind of agnosticism what Nature really wants to teach its readers? By that: D. q) M$ u% l0 o: ]! `
standard, I estimate that at least half of the peer-reviewed scientific
- @3 T" _: q4 ^/ a h$ hpapers in Nature should be retracted. How can one convince the editors and
! h7 v2 p6 j/ u% G( s) U9 [6 v* l# G. ~reviewers that their proposed theory works for every possible case? One9 ~' v* f* s: [" i$ m
cannot. One chooses to apply the theory to typical examples and to1 d1 @1 O& ]5 n" u# p, l: h( j' F, I
demonstrate that in (hopefully) all scenarios considered, the theory works
0 W+ G5 {& v$ e( ?7 Lto a degree, and that that should warrant publication until a counterexample
; X* g& t6 ?, G* ~is found. I could imagine that Callaway has a sceptical mind, which is& J# E! Z, g+ c1 G V/ l0 E# k
crucial to scientific thinking, but that would be put to better use if he) w8 W; N& W) D4 g6 _, B
wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly. y/ G9 E+ f6 a' h: k' { `1 Z
advanced, non-detectable drug that the Chinese have come up with in the. ^- V) X0 J$ w! D% G1 f
past 4 years (they obviously did not have it in Beijing, otherwise why not9 _* O; v1 q2 [
use it and woo the audience at home?), based on data and rational derivation
7 t( A9 E% e4 x1 W* A- g! Q) r. This article, however, can be interpreted as saying that all athletes are
; ?' V/ Q9 f( ]/ V5 Edoping and the authorities are just not good enough to catch them. That may1 k" H! [2 C N8 @, c
be true, logically, but definitely will not make the case if there is ever a: N% ^* H7 {" r4 H
hearing by the governing body for water sports, FINA, to determine if Ye
& W2 C! \6 N; ]- Thas doped. To ask whether it is possible to obtain a false negative in a
7 ?8 [( \% Z8 E2 Z8 M) N' Q( }7 Udrug test looks like a rigged question to me. Of course it is possible:* ~8 H3 y7 g3 o7 r3 Z* R
other than the athlete taking a drug that the test is not designed to detect: Y- J. L9 F& J2 g1 j7 m
, anyone who has taken quantum 101 will tell you that everything is
) _1 D& l9 U- a/ ?8 Oprobabilistic in nature, and so there is a probability that the drug in an, @/ g- l8 g, C' s7 Q( T
athlete’s system could tunnel out right at the moment of the test. A slight# R7 ]+ u" ?0 \" O. M4 k' e
chance it may be, but should we disregard all test results because of it?
3 L/ D: s1 B: J- rLet’s be practical and reasonable, and accept that the World Anti-Doping) i3 i, j. E/ Y) [! V m" Q
agency (WADA) is competent at its job. Ye’s urine sample will be stored for
% C( f& z" Z4 z: `" c9 o6 N. ^eight years after the contest for future testing as technology advances.4 s1 [* f1 [/ X! ^2 ]
Innocent until proven guilty, shouldn’t it be?2 A+ T' A6 v t6 z% e' U# _6 H- P) @
6 E* @, q6 ~- }- L/ ISixth, and the last point I would like to make, is that the out-of-) X8 ^! B8 T2 [" P+ q$ w) F0 V
competition drug test is already in effect, which Callaway failed to mention; c; f4 Y" p/ V' k$ o8 p
. As noted in the president of WADA’s press release, drug testing for! j" X6 q( R% \, Q
Olympians began at least six months before the opening of the London# W2 N7 [! u; e& ^" z1 u
Olympics. Furthermore, 107 athletes have been banned from this Olympics for
, j( u7 l( c N& j- }doping. That may be the reason that “everyone will pass at the Olympic
6 y# E: O; v* W+ y) ygames. Hardly anyone fails in competition testing” — those who did dope
. {# ]$ X: _' d$ ~# s; \. Nhave already been caught and sanctioned. Callaway is free to suggest that a) S( C. R2 R$ K7 D, d
player could have doped beforehand and fooled the test at the game, but this: ^$ {; B, |" B6 ^# `; H
possibility is certainly ruled out for Ye.
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: K5 W9 K9 Q, [. ?4 @Over all, even though Callaway did not falsify any data, he did (
3 P, m$ `' g! K! n7 V% t9 Gintentionally or not) cherry-pick data that, in my view, are far too% {, }0 c+ r% \ O/ v
suggestive to be fair and unbiased. If you want to cover a story of a! _) T( E1 X0 @! P' s3 C6 h. s \
suspected doping from a scientific point of view, be impartial and provide H1 d* J0 r- t8 C
all the facts for the reader to judge. You are entitled to your
9 G v" |$ ~& [interpretation of the facts, and the expression thereof in your piece,9 S' }! s. p0 o$ i
explicitly or otherwise, but showing only evidence that favours your, s- F4 V) e0 H
argument is hardly good science or journalism. Such an article in a journal. a( e% o: [9 O7 v
such as Nature is not an appropriate example of how scientific research or W1 y5 j8 Q: J8 v% N% |7 u
reporting should be done. |
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