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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
$ `$ P+ N( k1 T K4 s0 {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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: D# w. ]! {0 l/ j, H* bhttp://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html1 Z/ K Y" ~: s) p8 o
; r- o) L5 _% @0 W9 A) gFROM LAI JIANG, Department of Chemistry, University of Pennsylvania! @% O; }. R, A' D5 W
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It is a shame to see Nature — which nearly all scientists, including myself' }# i# u/ ?2 ?. n! [" B, M, C% X
, regard as one of the most prestigious and influential physical-science
4 s4 h( w% Z( y4 l! L- ?; Umagazines — publish a thinly veiled biased article like this. Granted, this4 u, O9 b- j* g2 `& ^$ V
is not a peer-reviewed scientific article and did not go through the# G1 a2 I( z6 y; K
scrutiny of picking referees. But to serve as a channel for the general
9 v! ]- U9 x8 w8 e+ epopulace to be in touch with and appreciate science, the authors and editors1 `1 T8 C5 [' N) J
should at least present the readers with facts within the proper context,
6 R6 ~) p: [3 C* _1 ]2 W7 jwhich they blatantly failed to do.
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First, to identify Ye’s performance increase, Ewen Callaway compared her( Z1 Z: b3 [: s5 N. { t% W6 J
Olympic 400-metre IM time with her performance at the World Championships in) B6 c* y/ w: S' F7 G
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “& k: B& k; \8 w7 m7 m
anomalous” improvement of around 7 seconds (6.72 s). In fact, her previous, B, x$ O# F+ b( g3 C( j
personal best was 4:33.79 at the Asian Games in 2010. This leads to an. J7 T3 c0 V* C# ]3 y
improvement of 5.38 seconds. In a sporting event in which 0.1 s can be the
, ~5 f; I7 h/ Sdifference between the gold and silver medal, I see no reason for 5.38 s to
, g- O* z" s" }5 |be treated as 7 s.
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Second, as previously pointed out, Ye is only 16 years old and her body is
. J" ]3 G* \; k+ b. b# Qstill developing. Bettering oneself by 5 seconds over two years may seem
& x7 f( ?; h G( ^" gimpossible for an adult swimmer, but it certainly happens among youngsters.
( ~3 M$ u0 Z; V- l' e KAn interview with Australian gold medallist Ian Thorpe revealed that his 400. e+ Y; f! e x" |. ?8 J
-metre freestyle time improved by 5 seconds between the ages of 15 and 16.
1 C) G( I& m/ _# y$ u- w" FFor regular people, including Callaway, it may be hard to imagine what an1 D/ L( }5 v" Y
elite swimmer can achieve as he or she matures and undergoes scientific and
8 e! j9 e" J$ W. f8 X" Zpersistent training. But jumping to the conclusion that it is “anomalous”
5 J: g/ z7 p) L9 Jbased on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.
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S1 q3 C7 ]* a a$ cThird, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook3 [8 G" s+ M) l5 u( I
example of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in" D- K# ^# S0 y/ b3 k6 ^, T
the last 50 metres, but Lochte had a huge lead in the first 300 metres, so
1 w$ [5 W2 I) Q% f- c/ She chose not to push himself too hard and to conserve his energy for later0 N1 ~ f- o- `* h0 \' T3 b8 M" u
events (whether this conforms to the Olympic spirit and the ‘use one’s0 p0 R) o+ {/ a9 e
best efforts to win a match’ requirement that the Badminton World
7 y, s9 r5 `& ~) [Federation recently invoked to disqualify four badminton pairs is another
/ T* K6 C F$ v' n: }% g7 D1 utopic worth discussing, though probably not in Nature). Ye, on the other
% `* m2 G3 X7 Q- [/ {hand, was trailing behind after the first 300 metres and relied on freestyle
1 R E9 r7 T2 [* \, n) b, in which she has an edge, to win the race. Failing to mention this
/ ]( O# L C! F+ U6 V3 Bstrategic difference, as well as the fact that Lochte is 23.25 seconds
/ q$ f0 V. j. F; Y: J* Ffaster (4:05.18) than Ye overall, creates the illusion that a woman swam
0 V. g, h; t' x: O% A& efaster than the best man in the same sport, which sounds impossible. Putting u" x, e: J; S
aside the gender argument, I believe this is still a leading question that& t: _4 ?4 b/ C3 y
implies to the reader that there is something fishy going on." ]7 V$ ~8 _+ g# v5 Y% w
3 x+ p2 U' m3 Y; D# k6 P5 rFourth is another example of cherry-picking. In the same event, there are
6 l% y/ ~' z/ B& q2 H8 L, p+ xfour male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93/ R+ i6 n0 p& M8 @7 V5 R! v
s) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s' ~8 P0 K6 \9 F `' \. ^
), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns
3 p6 L, z9 U. y. gout, if we are just talking about the last 50 metres in a 400-metre IM,! c' M: x2 D5 [7 i6 m E" W
Lochter is not the example I would have used if I were the author. What kind7 f, v2 F, _* a$ n6 H
of scientific rigorousness is Callaway trying to demonstrate here? Is it
( ~$ B# Q* q1 s, j4 P" W4 [2 V6 Slogical that if Lochter is the champion, we should assume that he leads in; N8 @) W' f( @* r
every split? That would be a terrible way to teach the public how science3 p. n, x; B$ p) ]8 _
works." P' i9 M+ y$ ]: j/ e7 R* A* S4 `
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Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and
( }( H# p% }/ L1 Bimplies that a drug test cannot rule out the possibility of doping. Is this; j/ G- G# a& u' D
kind of agnosticism what Nature really wants to teach its readers? By that0 U/ x+ q4 S5 d9 A9 G( }9 z' q4 W% O
standard, I estimate that at least half of the peer-reviewed scientific" @, D& d9 j6 S# k
papers in Nature should be retracted. How can one convince the editors and4 X. S/ G; {5 K, E
reviewers that their proposed theory works for every possible case? One
6 n' h1 X+ \( y! _8 `0 E5 Zcannot. One chooses to apply the theory to typical examples and to. L" ~1 \+ ?, N2 E4 c5 Y
demonstrate that in (hopefully) all scenarios considered, the theory works/ q. E9 n8 |( d, E, T5 f1 Z
to a degree, and that that should warrant publication until a counterexample
8 _# R$ M) B: V* O2 Ris found. I could imagine that Callaway has a sceptical mind, which is
$ V3 O* Y. S( Y6 [ [( F- icrucial to scientific thinking, but that would be put to better use if he0 \3 Z0 \4 H8 i% W6 A% I
wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly# |" r3 I7 _$ @" c" M
advanced, non-detectable drug that the Chinese have come up with in the
7 Y& C. I! P/ z1 D! }2 F$ Qpast 4 years (they obviously did not have it in Beijing, otherwise why not
) g* c F! x: I% n7 Y" kuse it and woo the audience at home?), based on data and rational derivation
v/ \8 n/ t7 z4 w. This article, however, can be interpreted as saying that all athletes are
, K- F8 Z+ m k6 Edoping and the authorities are just not good enough to catch them. That may
) Y( ]: S# j+ x2 e# bbe true, logically, but definitely will not make the case if there is ever a
8 v7 L( \1 T7 m" F1 Jhearing by the governing body for water sports, FINA, to determine if Ye
8 U; n8 k) a9 X' n n! {! W0 chas doped. To ask whether it is possible to obtain a false negative in a* }$ V; ?+ l$ `
drug test looks like a rigged question to me. Of course it is possible:+ F" Z$ ?6 |+ l' k* _6 @4 O, l
other than the athlete taking a drug that the test is not designed to detect
; r, b: |( \9 k, anyone who has taken quantum 101 will tell you that everything is. h2 v& _8 j4 d+ Y! j: r3 `
probabilistic in nature, and so there is a probability that the drug in an1 ?4 \' b, w$ J
athlete’s system could tunnel out right at the moment of the test. A slight
% `, ? W, z* M8 T* C1 M jchance it may be, but should we disregard all test results because of it?
: V9 I5 j# S$ ^5 w0 G1 p$ XLet’s be practical and reasonable, and accept that the World Anti-Doping5 ?% m& [1 g/ u/ L; J
agency (WADA) is competent at its job. Ye’s urine sample will be stored for
2 ~) _2 W1 {0 X2 l( g2 Geight years after the contest for future testing as technology advances.
$ ?3 F% A1 V' b2 A4 U! \; PInnocent 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-- a, q) l2 n: N; M3 }) f6 I* Z
competition drug test is already in effect, which Callaway failed to mention
5 n# X# D/ n' `4 D; i! v6 I. As noted in the president of WADA’s press release, drug testing for
, \- L3 a R; p5 T+ a( Z; A# pOlympians began at least six months before the opening of the London
8 Y0 W9 A( ^; o9 g$ MOlympics. Furthermore, 107 athletes have been banned from this Olympics for3 @- v R3 X2 J# ~6 F( |
doping. That may be the reason that “everyone will pass at the Olympic# F [0 S, d- @ |2 F
games. Hardly anyone fails in competition testing” — those who did dope
6 a+ r+ ^ s* R0 ~6 jhave already been caught and sanctioned. Callaway is free to suggest that a% a @( }' d* Y+ \+ b
player could have doped beforehand and fooled the test at the game, but this
7 R* G _: H' i4 w) g! c5 cpossibility is certainly ruled out for Ye.' l1 H7 Y5 _( R3 v' d. Z
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Over all, even though Callaway did not falsify any data, he did (1 J; u! b' h6 j. J. U1 K" ~- F
intentionally or not) cherry-pick data that, in my view, are far too
% @ H9 x) Q. Z4 z5 c/ Bsuggestive to be fair and unbiased. If you want to cover a story of a9 D6 R7 V- Q ]4 L$ |
suspected doping from a scientific point of view, be impartial and provide/ {: T( d4 I+ D" h
all the facts for the reader to judge. You are entitled to your
) M; Z, { L9 sinterpretation of the facts, and the expression thereof in your piece,
- g3 s u; O: k4 hexplicitly or otherwise, but showing only evidence that favours your
: g& N- t$ i2 Aargument is hardly good science or journalism. Such an article in a journal9 r. c8 `1 P1 t+ y1 N4 a
such as Nature is not an appropriate example of how scientific research or! q7 w4 U7 Y4 b6 I) n. @
reporting should be done. |
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