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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
7 C! P# i2 s( u/ M y: u8 c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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* U, `, k. z. B3 j4 G. FFROM LAI JIANG, Department of Chemistry, University of Pennsylvania
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3 K0 [1 p4 E5 AIt is a shame to see Nature — which nearly all scientists, including myself: n H$ d- b6 }9 q) X% M2 B0 v7 }
, regard as one of the most prestigious and influential physical-science
1 J3 v, v G mmagazines — publish a thinly veiled biased article like this. Granted, this. E. N; O. U `/ I/ b1 \
is not a peer-reviewed scientific article and did not go through the
/ W; N1 t( ?$ a9 nscrutiny of picking referees. But to serve as a channel for the general: W s( Y5 a7 ~3 u- D% P
populace to be in touch with and appreciate science, the authors and editors c4 {: F. z: u9 O, d; w3 k
should at least present the readers with facts within the proper context,/ p& O$ V7 N) c0 k1 k4 X2 K# X
which they blatantly failed to do.
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- x7 x$ a7 g3 E7 Y' pFirst, to identify Ye’s performance increase, Ewen Callaway compared her$ y9 ^; s1 N$ M: p9 t" }
Olympic 400-metre IM time with her performance at the World Championships in
% r0 V9 Q, R& R7 D% d4 J2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “
( G1 J; M6 C" r6 H+ t6 Tanomalous” improvement of around 7 seconds (6.72 s). In fact, her previous7 {' S& {/ |/ ~" {. R5 y0 a
personal best was 4:33.79 at the Asian Games in 2010. This leads to an; \* `6 u3 B/ l3 R% C2 j
improvement of 5.38 seconds. In a sporting event in which 0.1 s can be the, b6 r2 G. `* F& ~, ^0 A8 Q
difference between the gold and silver medal, I see no reason for 5.38 s to% F5 X& z. b) P0 g9 {7 o# R' ^7 @
be treated as 7 s.
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/ G( I1 B+ O" T4 S) M. kSecond, as previously pointed out, Ye is only 16 years old and her body is2 b. y1 d( L6 w h& ^# z& N
still developing. Bettering oneself by 5 seconds over two years may seem
9 S I" S/ ^$ Z3 Qimpossible for an adult swimmer, but it certainly happens among youngsters.
1 S- d) Q; _2 } I/ V) w2 ?* k- W# WAn interview with Australian gold medallist Ian Thorpe revealed that his 400
, k0 q7 \* o1 H, I-metre freestyle time improved by 5 seconds between the ages of 15 and 16.
, R& {$ [1 r/ a0 R! V# E; c: Q7 @For regular people, including Callaway, it may be hard to imagine what an% ~* m I7 T* y9 E% A- [" T6 e
elite swimmer can achieve as he or she matures and undergoes scientific and% Q4 x" K" A( {' C
persistent training. But jumping to the conclusion that it is “anomalous”8 V& E9 i/ |5 j- U$ k
based on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.
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t% K1 {) S- C, L. BThird, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook' J1 D2 ]+ Y+ o& b6 J
example of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in L0 V& V9 j: d& V8 V
the last 50 metres, but Lochte had a huge lead in the first 300 metres, so# T! O. a$ Z! ~9 N) k2 g8 I2 Y
he chose not to push himself too hard and to conserve his energy for later
4 I" e1 j$ ^7 Q' | F4 Nevents (whether this conforms to the Olympic spirit and the ‘use one’s
" h8 K2 ^% b; f9 |( `' Xbest efforts to win a match’ requirement that the Badminton World1 W# F( f- h T: j [( W: W$ H! W- ^
Federation recently invoked to disqualify four badminton pairs is another7 t: [" @6 w1 J% r: r% j1 ~
topic worth discussing, though probably not in Nature). Ye, on the other8 @: \ {; P* V' c( t: z4 w- c
hand, was trailing behind after the first 300 metres and relied on freestyle/ Y. c" \# I9 e( @. B
, in which she has an edge, to win the race. Failing to mention this
" \# ]1 Y( v# {+ Ostrategic difference, as well as the fact that Lochte is 23.25 seconds: V6 |8 a* ^8 |% I6 m1 ^5 {4 V
faster (4:05.18) than Ye overall, creates the illusion that a woman swam
- Z$ m+ s+ q5 f% U- gfaster than the best man in the same sport, which sounds impossible. Putting
0 m5 s; c9 L m3 }6 Caside the gender argument, I believe this is still a leading question that
9 L( c" l$ T7 [' Y/ C" x2 x/ O9 i) F# Yimplies to the reader that there is something fishy going on.
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N9 M2 t8 g, O" f9 `5 s+ O6 CFourth is another example of cherry-picking. In the same event, there are3 }' G% Z: P% y1 w# N
four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93
' ?7 w- u! b2 {/ w' m3 e; K$ as) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s" V$ p2 I3 q+ z/ x
), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns( c7 b+ Q; B: ]/ L8 e
out, if we are just talking about the last 50 metres in a 400-metre IM,
; F; Y5 j0 @! z4 S V5 E! RLochter is not the example I would have used if I were the author. What kind
5 G& l; L4 R/ I/ f3 U2 Rof scientific rigorousness is Callaway trying to demonstrate here? Is it
4 y* E3 e) p U) J( qlogical that if Lochter is the champion, we should assume that he leads in; S* e' S2 M) p( I
every split? That would be a terrible way to teach the public how science: U; @. L5 f3 G' i/ ^# J
works.
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' Y/ V8 S* z3 T" Z8 Y: z/ } hFifth is the issue I oppose the most. Callaway quotes Ross Tucker and
' V/ C% b5 E/ b, `$ A& Y" d: w. h4 Aimplies that a drug test cannot rule out the possibility of doping. Is this3 p/ S2 w! R8 J5 N* D4 r
kind of agnosticism what Nature really wants to teach its readers? By that7 ]8 l" U/ i& }0 x G+ ]9 Y
standard, I estimate that at least half of the peer-reviewed scientific
+ ?, x6 y+ s! r! {& Apapers in Nature should be retracted. How can one convince the editors and* N- ]; X; [# {* f
reviewers that their proposed theory works for every possible case? One! E( j" q! `! g, T6 L
cannot. One chooses to apply the theory to typical examples and to
$ }+ ^! D- {) i1 f6 xdemonstrate that in (hopefully) all scenarios considered, the theory works( ]+ O8 h; k- L
to a degree, and that that should warrant publication until a counterexample" I1 F1 d) _- ], I7 M, W
is found. I could imagine that Callaway has a sceptical mind, which is
+ f- M# }3 R, U# G! M: [' a( }crucial to scientific thinking, but that would be put to better use if he
9 B- X } v: r! X. q( n9 qwrote a peer-reviewed paper that discussed the odds of Ye doping on a highly5 N- A- k2 l' S; A/ H* A5 l
advanced, non-detectable drug that the Chinese have come up with in the
/ @2 n T% N b$ y0 W$ jpast 4 years (they obviously did not have it in Beijing, otherwise why not
2 B0 S& o) O- o; t8 Huse it and woo the audience at home?), based on data and rational derivation/ M4 j) g5 V; |% o3 {- Q
. This article, however, can be interpreted as saying that all athletes are
: B9 t. {; A! t* _ jdoping and the authorities are just not good enough to catch them. That may" R6 q( X5 Z- z: t3 ]. c, H) m
be true, logically, but definitely will not make the case if there is ever a
, p" d' r$ A$ e- a+ l8 \hearing by the governing body for water sports, FINA, to determine if Ye
' T& m, g, v+ A7 H6 x1 t: Bhas doped. To ask whether it is possible to obtain a false negative in a
" \8 t& s/ _1 r0 {' udrug test looks like a rigged question to me. Of course it is possible:9 G- w* O' r3 y5 ?$ P% e* v
other than the athlete taking a drug that the test is not designed to detect
) _& g" l* t3 v, Y- Z3 T, anyone who has taken quantum 101 will tell you that everything is6 ^1 Z' e% H3 K6 y5 C9 }& q
probabilistic in nature, and so there is a probability that the drug in an6 `) m9 x( @/ J2 [, T8 l! H; e
athlete’s system could tunnel out right at the moment of the test. A slight- b* U9 l% J: X. k. A$ U# `
chance it may be, but should we disregard all test results because of it?) ^! q7 I4 m, G' V( D' \) j: Z
Let’s be practical and reasonable, and accept that the World Anti-Doping+ W; N! Q* x& T6 o4 B( D3 J
agency (WADA) is competent at its job. Ye’s urine sample will be stored for/ f" c. o9 |4 F: r
eight years after the contest for future testing as technology advances.
3 e% \) }. l3 K3 T+ n# q( `! A& \Innocent until proven guilty, shouldn’t it be?8 H, N1 f) }* R; Z4 y2 `3 `3 X
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Sixth, and the last point I would like to make, is that the out-of-
6 t q4 ?+ c8 Tcompetition drug test is already in effect, which Callaway failed to mention/ }- V# m3 d5 B: W7 \( w3 V
. As noted in the president of WADA’s press release, drug testing for/ E @# K8 p8 ? A" _" {
Olympians began at least six months before the opening of the London9 U- ]) O, ~) K2 J) ~
Olympics. Furthermore, 107 athletes have been banned from this Olympics for
4 Y; R+ k* n D4 S1 D8 l0 R- hdoping. That may be the reason that “everyone will pass at the Olympic! B: a( e$ B |. y* Z& c2 D
games. Hardly anyone fails in competition testing” — those who did dope0 u: j- B% J6 C6 X; X( B+ L* T
have already been caught and sanctioned. Callaway is free to suggest that a c3 k4 U5 E2 B* q4 O1 v
player could have doped beforehand and fooled the test at the game, but this# E" Z0 e3 n/ ?; P! @ e
possibility is certainly ruled out for Ye.3 L" {8 J& u! J$ W u+ o. R
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Over all, even though Callaway did not falsify any data, he did (
: h J9 K4 y8 a: E- ]intentionally or not) cherry-pick data that, in my view, are far too$ a' c b N% O! ]
suggestive to be fair and unbiased. If you want to cover a story of a+ V5 |0 x, T8 k" o# H+ T6 c5 [3 w
suspected doping from a scientific point of view, be impartial and provide
+ D5 o- E$ Z, j( iall the facts for the reader to judge. You are entitled to your) c% q3 i- l* _4 Q
interpretation of the facts, and the expression thereof in your piece,1 `, M' _1 K( D+ A( F% A
explicitly or otherwise, but showing only evidence that favours your
& Q8 s! M' ] i0 U) sargument is hardly good science or journalism. Such an article in a journal0 P* j4 ^* g0 H. U( o: _- \' {) p
such as Nature is not an appropriate example of how scientific research or
6 K9 j! t3 q: i# k4 L7 Sreporting should be done. |
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