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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
( }6 S+ E, K! r z1 P/ S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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3 u- d( D4 s$ T6 }% g; E- `http://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html* ~9 O& K; ^1 L
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FROM LAI JIANG, Department of Chemistry, University of Pennsylvania$ Z9 x) s5 N, J4 _
. [* ?9 A7 R3 F$ v* {( _2 iIt is a shame to see Nature — which nearly all scientists, including myself* f, N7 p% K+ K: \3 p
, regard as one of the most prestigious and influential physical-science& F$ a e1 f% l$ f, }" n8 d P+ J
magazines — publish a thinly veiled biased article like this. Granted, this* e. ^5 q: v& }& _- q8 }- l% q
is not a peer-reviewed scientific article and did not go through the; v5 U( D* Z; K7 `& {; _
scrutiny of picking referees. But to serve as a channel for the general
4 W& D; J& j6 s+ d: ]; Jpopulace to be in touch with and appreciate science, the authors and editors6 W4 N& F7 l0 t6 r0 R
should at least present the readers with facts within the proper context,1 S$ j- e/ j* |/ _# g0 U
which they blatantly failed to do.
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First, to identify Ye’s performance increase, Ewen Callaway compared her
# x4 N U$ k# m7 F0 SOlympic 400-metre IM time with her performance at the World Championships in8 L7 T7 k- `7 T4 \2 ]( d7 P3 O
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “
. y) R' g1 ]1 w3 j: a) x Yanomalous” improvement of around 7 seconds (6.72 s). In fact, her previous
1 P. y$ f3 ~- O* Wpersonal best was 4:33.79 at the Asian Games in 2010. This leads to an8 j7 g% C0 M9 U+ m( v9 R7 E- G6 G& A
improvement of 5.38 seconds. In a sporting event in which 0.1 s can be the: C5 s- H% M- c2 q2 k! R
difference between the gold and silver medal, I see no reason for 5.38 s to0 z( {9 x/ z! z$ }- f( B
be treated as 7 s.! @$ k; ?% b4 k0 G
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Second, as previously pointed out, Ye is only 16 years old and her body is
$ {6 }4 m3 o4 B* Astill developing. Bettering oneself by 5 seconds over two years may seem
- I, Y& @- H, d# Gimpossible for an adult swimmer, but it certainly happens among youngsters.
4 X! m, e) t2 C; [% h/ L. F: ^* s5 S2 uAn interview with Australian gold medallist Ian Thorpe revealed that his 400) y8 j4 i ?9 A) G" N9 J% B
-metre freestyle time improved by 5 seconds between the ages of 15 and 16.
Q& i: ^8 N7 ~! CFor regular people, including Callaway, it may be hard to imagine what an9 Z3 x" K7 _- B; J5 }. l! g' B! ~
elite swimmer can achieve as he or she matures and undergoes scientific and$ N! `+ g# M5 D D6 L2 K' d8 X1 F
persistent training. But jumping to the conclusion that it is “anomalous”
( r; p: M+ L0 p# O9 Ubased on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.. Q. l# A. g+ `
. }/ P8 o7 j2 dThird, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook
: N2 t8 y* [" uexample of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in
, l: |8 ^" P P& f7 [3 q; rthe last 50 metres, but Lochte had a huge lead in the first 300 metres, so: A8 w9 C, d1 i3 @! w( M5 Z$ @
he chose not to push himself too hard and to conserve his energy for later
; e# w! K1 Z* t3 M* e3 Tevents (whether this conforms to the Olympic spirit and the ‘use one’s6 a; m: d Z3 n y8 U* `$ t& t" n5 w
best efforts to win a match’ requirement that the Badminton World
6 f0 v+ C* o. lFederation recently invoked to disqualify four badminton pairs is another
& N4 i9 J w, m. e! O4 j5 c& Htopic worth discussing, though probably not in Nature). Ye, on the other
2 [% p, ^. g: H7 G- p5 C1 B! khand, was trailing behind after the first 300 metres and relied on freestyle
# K1 C1 c( S4 i) | n- h3 q, in which she has an edge, to win the race. Failing to mention this0 D) r* \9 T' q7 Z# p
strategic difference, as well as the fact that Lochte is 23.25 seconds3 }( J/ p( Z" t# c7 U' b
faster (4:05.18) than Ye overall, creates the illusion that a woman swam4 g6 V+ j4 W" Z+ @+ K( U, g
faster than the best man in the same sport, which sounds impossible. Putting4 d1 J. K/ m; ^0 f0 x4 p
aside the gender argument, I believe this is still a leading question that* W# g1 h' F# F; m
implies to the reader that there is something fishy going on.. T7 e, L7 i8 m. T* C% G" D& G
; R5 D5 O% L+ Z# d; g# NFourth is another example of cherry-picking. In the same event, there are3 z* J" s# g _! d) Q3 R8 L" ?
four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93
l: U( m6 B* T2 _7 d5 as) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s
" W- i9 N0 ?, Q), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns
% p) h9 y$ x. S3 N: T/ zout, if we are just talking about the last 50 metres in a 400-metre IM,
" A' o7 R- E' Q9 f5 Z$ DLochter is not the example I would have used if I were the author. What kind- ]2 Z: }8 ^7 ^% I5 k* c. T
of scientific rigorousness is Callaway trying to demonstrate here? Is it
0 A$ f ~$ Q b8 @logical that if Lochter is the champion, we should assume that he leads in, |- N' x8 Y' H) F- V# u
every split? That would be a terrible way to teach the public how science
2 j8 d5 E- e H/ G0 k- n, F8 ` Rworks.
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( d! G- E1 q% _2 q5 `6 L, E" KFifth is the issue I oppose the most. Callaway quotes Ross Tucker and' x" K$ R- }( O/ M2 t( K
implies that a drug test cannot rule out the possibility of doping. Is this
2 E0 E: t/ h4 Z* @kind of agnosticism what Nature really wants to teach its readers? By that
5 V0 ?$ V6 i* `- v1 l: }" f; i" [( Pstandard, I estimate that at least half of the peer-reviewed scientific: _ h! ^2 b9 \( B& }
papers in Nature should be retracted. How can one convince the editors and q8 ^! E( D5 K; w2 ] e& T3 Z
reviewers that their proposed theory works for every possible case? One
/ ]4 C8 n7 K! Tcannot. One chooses to apply the theory to typical examples and to6 V' j; f# x3 [& S1 R' I
demonstrate that in (hopefully) all scenarios considered, the theory works
2 X q" x1 F6 ?% w8 r- Z# zto a degree, and that that should warrant publication until a counterexample
* P7 q. ?3 x- b3 p5 T+ ris found. I could imagine that Callaway has a sceptical mind, which is
( W( X: E8 w4 w, ^crucial to scientific thinking, but that would be put to better use if he% I: D0 B1 B% H& i1 G
wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly
) h. Z4 M& x% o$ g$ U1 Tadvanced, non-detectable drug that the Chinese have come up with in the
2 T, i! q# z: Apast 4 years (they obviously did not have it in Beijing, otherwise why not
9 P7 e+ Q. t% m. Y8 q1 Cuse it and woo the audience at home?), based on data and rational derivation
+ t! Y. u* E4 b8 |. This article, however, can be interpreted as saying that all athletes are- R3 K8 G2 n8 R9 N) s5 A3 ~8 Z7 `
doping and the authorities are just not good enough to catch them. That may
5 L, r$ B. j( r# }* l0 qbe true, logically, but definitely will not make the case if there is ever a$ J- H1 X7 [ J" P, [+ i/ k
hearing by the governing body for water sports, FINA, to determine if Ye6 P' }4 m, @: T6 c
has doped. To ask whether it is possible to obtain a false negative in a- g( W- j& ?8 q* L+ Y" A7 S: c( U
drug test looks like a rigged question to me. Of course it is possible:
! |- Y8 U9 _2 M# A3 \2 Mother than the athlete taking a drug that the test is not designed to detect
$ }, O5 V9 ?, }' y! P, anyone who has taken quantum 101 will tell you that everything is
0 p' i! K3 H' W/ _+ l; Yprobabilistic in nature, and so there is a probability that the drug in an
8 }; D& D: t5 I& yathlete’s system could tunnel out right at the moment of the test. A slight# k! l9 T% W- [4 o
chance it may be, but should we disregard all test results because of it?
7 |: F. f4 r2 Y2 yLet’s be practical and reasonable, and accept that the World Anti-Doping: e. C! \7 p& Y
agency (WADA) is competent at its job. Ye’s urine sample will be stored for* |! R' i$ ~) Q8 O# v( k* D
eight years after the contest for future testing as technology advances.% s; @1 ~ J* L8 V8 ~: m
Innocent 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-
! }! e* w5 d6 V0 Jcompetition drug test is already in effect, which Callaway failed to mention
3 |& N- i& e- v! q. As noted in the president of WADA’s press release, drug testing for: F N* p: y% D5 p% p$ `8 v1 J
Olympians began at least six months before the opening of the London
% P5 u* F3 M0 R0 AOlympics. Furthermore, 107 athletes have been banned from this Olympics for
" D9 [& T: c* F8 ?9 U6 l' |0 W9 n8 gdoping. That may be the reason that “everyone will pass at the Olympic; h+ X. k' ^1 A' O6 r+ l
games. Hardly anyone fails in competition testing” — those who did dope
/ @ W% e* y8 J0 X! O: p- ehave already been caught and sanctioned. Callaway is free to suggest that a
: G( \: [% e7 \ ], \player could have doped beforehand and fooled the test at the game, but this# U# @" l4 q0 A9 S4 E. J0 ~7 V
possibility is certainly ruled out for Ye.
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Over all, even though Callaway did not falsify any data, he did (
- l, U1 {9 h9 x" z3 N' \& ointentionally or not) cherry-pick data that, in my view, are far too
% u6 |- Q) W& g* W2 zsuggestive to be fair and unbiased. If you want to cover a story of a0 w8 n0 l% {4 i$ Z9 i
suspected doping from a scientific point of view, be impartial and provide
/ B# ~! B4 t# `7 q5 _9 d3 y2 a& xall the facts for the reader to judge. You are entitled to your7 C) z+ ?& k# K: ?
interpretation of the facts, and the expression thereof in your piece,
( G6 |; R, I# F' B$ {+ t2 ^5 G- }explicitly or otherwise, but showing only evidence that favours your
2 x" M6 X5 `( {. ~& R" f8 Bargument is hardly good science or journalism. Such an article in a journal, Q8 l g: o) A0 L# N4 R% ~! z
such as Nature is not an appropriate example of how scientific research or
5 J( X3 a# D& M9 ~% U/ z treporting should be done. |
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