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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; z9 t# W" D- d2 z. \/ 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.html0 e; a$ P! E2 l$ K$ ^, F
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FROM LAI JIANG, Department of Chemistry, University of Pennsylvania
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It is a shame to see Nature — which nearly all scientists, including myself+ O2 \9 e4 L% f) ]7 l( `
, regard as one of the most prestigious and influential physical-science0 K0 ? x( ]# P: u" l: {, `' G9 [" X
magazines — publish a thinly veiled biased article like this. Granted, this' l8 P" `0 k. Z; w# Z# r
is not a peer-reviewed scientific article and did not go through the- @/ h6 c- C* E5 u0 C
scrutiny of picking referees. But to serve as a channel for the general$ c# v2 k. p/ K, ]1 L, v
populace to be in touch with and appreciate science, the authors and editors
$ y! i/ x k: i h0 c bshould at least present the readers with facts within the proper context,1 h/ n* Y* G) Z4 x0 W. B- f
which they blatantly failed to do." q/ D' C+ r* o1 [5 X0 g
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First, to identify Ye’s performance increase, Ewen Callaway compared her
# X" s* K1 X- e- ~" o; E- fOlympic 400-metre IM time with her performance at the World Championships in& E2 u W* g1 T' S/ G9 O
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “
* z% T2 d. G, Z1 t" b* S& a6 g4 Z. Eanomalous” improvement of around 7 seconds (6.72 s). In fact, her previous
+ [) W8 }0 _) B' s1 \" e" dpersonal best was 4:33.79 at the Asian Games in 2010. This leads to an
' O; F) R) T+ [ c3 Kimprovement of 5.38 seconds. In a sporting event in which 0.1 s can be the
# D6 Z- I7 s- _. W. gdifference between the gold and silver medal, I see no reason for 5.38 s to
) w9 x' Q) j. H0 kbe treated as 7 s.- b: m3 |* Z. W+ E7 \
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Second, as previously pointed out, Ye is only 16 years old and her body is
( O% r( q( X* n; r1 t2 R& x4 m/ |still developing. Bettering oneself by 5 seconds over two years may seem
4 o: T) J. f b3 `! _# k" pimpossible for an adult swimmer, but it certainly happens among youngsters.
' X, u* t! F9 U! n0 ?/ j9 ^3 `- ~An interview with Australian gold medallist Ian Thorpe revealed that his 400
+ w5 j7 S% e% B& S, [-metre freestyle time improved by 5 seconds between the ages of 15 and 16.
4 l' y8 e/ Z t ?9 L5 }7 wFor regular people, including Callaway, it may be hard to imagine what an$ R+ O) t$ q/ s C4 ~
elite swimmer can achieve as he or she matures and undergoes scientific and
2 `6 A) e: Z1 W& i$ i& e2 [persistent training. But jumping to the conclusion that it is “anomalous”
$ J; U4 u) @9 e# t4 Zbased 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
8 V6 N+ B9 A6 ?* h' r' ]example of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in
) z& G& X9 E% ^4 }the last 50 metres, but Lochte had a huge lead in the first 300 metres, so
) K9 z1 J' l* h" Hhe chose not to push himself too hard and to conserve his energy for later% @% q/ ~. V. C
events (whether this conforms to the Olympic spirit and the ‘use one’s
' M. y4 G: b; \. i: I+ J# g1 M4 qbest efforts to win a match’ requirement that the Badminton World
7 m4 X4 _9 B! j& O4 O* mFederation recently invoked to disqualify four badminton pairs is another$ U- f, j. k5 i0 w" s( @! B; l
topic worth discussing, though probably not in Nature). Ye, on the other/ e# ^' k/ c. r- k
hand, was trailing behind after the first 300 metres and relied on freestyle
) H$ E5 l, |! U6 m2 G# V! e, in which she has an edge, to win the race. Failing to mention this, T. T/ T2 q3 G3 D
strategic difference, as well as the fact that Lochte is 23.25 seconds
. A0 C5 b: {" ]7 X# c& Qfaster (4:05.18) than Ye overall, creates the illusion that a woman swam
C# }" B5 q+ R7 K/ m- o4 ffaster than the best man in the same sport, which sounds impossible. Putting) J" J; h8 Z I9 H* v8 C) k& k
aside the gender argument, I believe this is still a leading question that! m" C" o$ @8 j6 {+ D y
implies to the reader that there is something fishy going on.+ j$ A+ q* j0 n: S* z6 y
9 r& N4 h4 U' } ^: tFourth is another example of cherry-picking. In the same event, there are# F+ q& P" v2 u' f( X
four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93
- M6 c& a# K) ns) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s! B8 u# D5 p/ s4 [: `. E ?
), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns
/ W# W: K- }& b6 l) O2 {+ lout, if we are just talking about the last 50 metres in a 400-metre IM,
# A3 m. _- Y" V8 `( r' HLochter is not the example I would have used if I were the author. What kind3 ^; b9 E4 R& b* E% [2 h4 e' b2 A
of scientific rigorousness is Callaway trying to demonstrate here? Is it
7 y: S6 Z6 {1 C" n/ u _logical that if Lochter is the champion, we should assume that he leads in
5 F. A: X' a/ f3 p* c2 qevery split? That would be a terrible way to teach the public how science
( Y8 c7 q1 ]+ [* r& Z4 d) pworks.
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Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and6 C$ i0 i. v( J6 p) a
implies that a drug test cannot rule out the possibility of doping. Is this4 U* K- K$ f9 E4 J6 _9 }9 o/ B
kind of agnosticism what Nature really wants to teach its readers? By that. M Z! E3 u6 i( r) R
standard, I estimate that at least half of the peer-reviewed scientific" L* D* P3 r9 E$ V3 U
papers in Nature should be retracted. How can one convince the editors and* ?) f5 q; H9 |, ]- {
reviewers that their proposed theory works for every possible case? One
5 ?1 W7 Z5 L6 I$ k. x2 e# ncannot. One chooses to apply the theory to typical examples and to& a# x( O' j+ j% A
demonstrate that in (hopefully) all scenarios considered, the theory works
* H& H4 |7 O1 zto a degree, and that that should warrant publication until a counterexample0 j( n* X, _" m3 ^% ~
is found. I could imagine that Callaway has a sceptical mind, which is, _6 f6 H% B$ x2 @. m
crucial to scientific thinking, but that would be put to better use if he
3 S- t5 d) }8 { J) E9 xwrote a peer-reviewed paper that discussed the odds of Ye doping on a highly4 p" Z e1 H4 D5 M
advanced, non-detectable drug that the Chinese have come up with in the
" |; d9 E/ i) E: Q* i; n* k! Vpast 4 years (they obviously did not have it in Beijing, otherwise why not
- u* j+ Z+ L! d& j @use it and woo the audience at home?), based on data and rational derivation
V. ?+ K$ f9 X& j7 q. This article, however, can be interpreted as saying that all athletes are$ [/ ]- `/ t+ p
doping and the authorities are just not good enough to catch them. That may
$ S- ?- R) n7 k( `, {' Ibe true, logically, but definitely will not make the case if there is ever a5 j. c% P) V L3 O/ C0 Y* I
hearing by the governing body for water sports, FINA, to determine if Ye) G' ^+ t" [- b
has doped. To ask whether it is possible to obtain a false negative in a
) ]& E1 l, C+ \3 A0 x3 J/ idrug test looks like a rigged question to me. Of course it is possible:
9 t5 W) X7 n& j. F% ], @" y; vother than the athlete taking a drug that the test is not designed to detect
# G1 u* v. c0 e/ I" t+ r, anyone who has taken quantum 101 will tell you that everything is
' r- W$ x2 ^- A# x5 [8 f9 lprobabilistic in nature, and so there is a probability that the drug in an
; Q: s" N- ?6 \athlete’s system could tunnel out right at the moment of the test. A slight3 `# X+ f& P- d9 v0 A3 |3 K/ v
chance it may be, but should we disregard all test results because of it?
! F0 E r+ e. r, pLet’s be practical and reasonable, and accept that the World Anti-Doping1 s: k6 U- p1 x& h3 J
agency (WADA) is competent at its job. Ye’s urine sample will be stored for
( Z3 J+ y" n! G# T- u7 Z& geight years after the contest for future testing as technology advances.1 L& J, x3 j8 U
Innocent until proven guilty, shouldn’t it be?
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* i2 H- I+ R7 C7 bSixth, and the last point I would like to make, is that the out-of-
7 ^) i6 ^( F: \& T' F3 R( Vcompetition drug test is already in effect, which Callaway failed to mention( T" C8 ]$ M) e; `, u
. As noted in the president of WADA’s press release, drug testing for
Y2 X$ ^) d1 I4 j: COlympians began at least six months before the opening of the London8 ^- [, A9 L* {# p6 D) G
Olympics. Furthermore, 107 athletes have been banned from this Olympics for: x/ g$ O { S1 H
doping. That may be the reason that “everyone will pass at the Olympic
, n7 e. D7 V2 c" o7 [: Sgames. Hardly anyone fails in competition testing” — those who did dope
% U& t( ]8 d1 m* g! ~5 ?have already been caught and sanctioned. Callaway is free to suggest that a
, p% H+ l2 ^7 s4 l4 \5 @player could have doped beforehand and fooled the test at the game, but this% w$ o' A; b* K# M% r
possibility is certainly ruled out for Ye./ Q* S5 c3 l7 ?8 M7 t4 L- T
. {0 m; K+ o( Z1 g+ Q9 J, ^Over all, even though Callaway did not falsify any data, he did (
% s% a4 l" u% ?, mintentionally or not) cherry-pick data that, in my view, are far too2 @2 F g3 H* o) a1 T8 U, m
suggestive to be fair and unbiased. If you want to cover a story of a+ W* @: @( Y( ~8 a
suspected doping from a scientific point of view, be impartial and provide& ~ I/ o0 L% E+ ?
all the facts for the reader to judge. You are entitled to your+ E4 q( b! @/ F i Z
interpretation of the facts, and the expression thereof in your piece,' g6 x' j4 d/ U3 [& {" ~
explicitly or otherwise, but showing only evidence that favours your) g* q! i3 K5 q! i
argument is hardly good science or journalism. Such an article in a journal
# N8 E- O+ |1 H; ]8 b* w/ isuch as Nature is not an appropriate example of how scientific research or% m7 V! `6 Z. L
reporting should be done. |
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