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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
( C; Z" D* F! s8 ~' Q如果是中国长大的,英语能到这种程度真是很不简单。! H3 @ h1 |) B. S! f
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http://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html/ K" i7 b. h; q' K9 A: O( s
: r+ h( }; y; YFROM 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
* I0 {% I! m' C" {! C, regard as one of the most prestigious and influential physical-science
' S* x# o4 T; f0 N; bmagazines — publish a thinly veiled biased article like this. Granted, this
P v2 ]0 l; `is not a peer-reviewed scientific article and did not go through the3 f$ u) [* \. ]# M% c4 Y! v8 V7 S
scrutiny of picking referees. But to serve as a channel for the general
) e" \8 _" c" u1 }. v9 e& W9 ypopulace to be in touch with and appreciate science, the authors and editors
* N; w1 j _# h% Q( Z5 { k( ^should at least present the readers with facts within the proper context,6 Y- Q1 U, k8 Q# ~0 f9 a8 K
which they blatantly failed to do.
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First, to identify Ye’s performance increase, Ewen Callaway compared her
# U7 k! J% c, q: g+ e- w% l9 n$ A/ @Olympic 400-metre IM time with her performance at the World Championships in
. R6 V: Q% F7 K$ f. s2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “
( |9 q6 I# C! m! u; [anomalous” improvement of around 7 seconds (6.72 s). In fact, her previous
) o" S, c+ Y8 s( m8 ?personal best was 4:33.79 at the Asian Games in 2010. This leads to an
7 \; |4 N1 Q- D, Y. V6 aimprovement of 5.38 seconds. In a sporting event in which 0.1 s can be the
% {4 O0 \5 q' e9 i6 Vdifference between the gold and silver medal, I see no reason for 5.38 s to
) s0 f) e8 S1 q, G9 r2 Ube treated as 7 s.$ a4 K; ^; B* [! k8 ^( U
, y- z! e3 o& s* pSecond, as previously pointed out, Ye is only 16 years old and her body is
/ r9 `) f$ t+ C ^' d$ j5 xstill developing. Bettering oneself by 5 seconds over two years may seem0 j6 R9 x$ f! W6 G" w
impossible for an adult swimmer, but it certainly happens among youngsters.6 |5 v7 Q$ Y& W6 z$ d
An interview with Australian gold medallist Ian Thorpe revealed that his 400& f- ^( t; x, E6 z) b
-metre freestyle time improved by 5 seconds between the ages of 15 and 16.* Y0 z2 @- C v. }( i
For regular people, including Callaway, it may be hard to imagine what an
# a; Q4 B$ ]% S& P Celite swimmer can achieve as he or she matures and undergoes scientific and
( Z6 u( V5 j* c# E% m6 \persistent training. But jumping to the conclusion that it is “anomalous”( W, D) V$ m. R$ e
based on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.
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# d8 W2 K: i3 L& B* GThird, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook T- t* u) V. e+ d7 _. E; o
example of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in
! B0 {' B: g2 G* D! Mthe last 50 metres, but Lochte had a huge lead in the first 300 metres, so, x; ]2 o+ C) C- U
he chose not to push himself too hard and to conserve his energy for later) D1 {) R* V8 t1 S/ \
events (whether this conforms to the Olympic spirit and the ‘use one’s# J2 c% A9 f1 ]& x- y7 s% _' H" _
best efforts to win a match’ requirement that the Badminton World
$ B. D% J; q8 C/ C) rFederation recently invoked to disqualify four badminton pairs is another
0 N! U* H) \# v8 [& }- z5 t! b" ntopic worth discussing, though probably not in Nature). Ye, on the other
5 X1 q5 M) ~0 f: N. @hand, was trailing behind after the first 300 metres and relied on freestyle- X% v; N" ]+ [ I1 T
, in which she has an edge, to win the race. Failing to mention this6 P% W$ J+ Y: @. q: G
strategic difference, as well as the fact that Lochte is 23.25 seconds
1 U+ E$ o: E1 \faster (4:05.18) than Ye overall, creates the illusion that a woman swam. ~# v3 K) K6 i
faster than the best man in the same sport, which sounds impossible. Putting
/ |" o% @. p) Y1 zaside the gender argument, I believe this is still a leading question that2 \. T; K. A$ A" e" Z2 i
implies to the reader that there is something fishy going on.9 [6 Y% Q9 o& q# b# p
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Fourth is another example of cherry-picking. In the same event, there are5 W5 S+ { ]: o$ |
four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93! h; ~3 J: f4 e: e5 U
s) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s
/ T( q' Q( G1 M1 [* c8 E; T), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns {" f/ @2 Q! J8 n6 G. Q9 {2 I' E: c+ s
out, if we are just talking about the last 50 metres in a 400-metre IM,
) T, p) b- L; o4 p; {$ FLochter is not the example I would have used if I were the author. What kind9 x) c8 C/ l# P# I* {
of scientific rigorousness is Callaway trying to demonstrate here? Is it
' E0 l- [- G; h/ L+ E2 W5 [logical that if Lochter is the champion, we should assume that he leads in. y$ o- O$ Y7 h% s* P8 B$ [3 \
every split? That would be a terrible way to teach the public how science {# s6 A* D, L: t+ e) S& ?
works.( R6 x$ k' y4 @" s9 D j' B. B" Z
0 @# k- M6 L/ K4 A) WFifth is the issue I oppose the most. Callaway quotes Ross Tucker and6 {# k; L7 h. ?
implies that a drug test cannot rule out the possibility of doping. Is this
, G+ C2 b* ^ K1 ` q2 ~# b0 Lkind of agnosticism what Nature really wants to teach its readers? By that* w4 [# Z; H' u) r( ?% y% [8 A
standard, I estimate that at least half of the peer-reviewed scientific9 l. O4 r2 [- P. j6 u1 F
papers in Nature should be retracted. How can one convince the editors and% L3 ~9 o9 p/ E( H" X: X
reviewers that their proposed theory works for every possible case? One: I! K! H) v( {( E
cannot. One chooses to apply the theory to typical examples and to, x0 I) D+ D! L, ~7 p
demonstrate that in (hopefully) all scenarios considered, the theory works
: t& a% q5 q; w9 l d8 s; @to a degree, and that that should warrant publication until a counterexample" \0 d c+ S8 H9 S# m* C5 R
is found. I could imagine that Callaway has a sceptical mind, which is
, G; Y$ o9 |! r9 e* n Lcrucial to scientific thinking, but that would be put to better use if he3 M! e9 K# _* [( H. l/ o* ~
wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly
1 g1 t0 j9 e" R, b& _/ U& G- q, B/ eadvanced, non-detectable drug that the Chinese have come up with in the. @6 l) L& ~* q6 R0 I
past 4 years (they obviously did not have it in Beijing, otherwise why not8 q: W2 Y; s1 [
use it and woo the audience at home?), based on data and rational derivation
+ f. v" m% p' v+ v3 r5 e. This article, however, can be interpreted as saying that all athletes are5 G( ~' Q$ T$ }, o8 E7 n; S; F
doping and the authorities are just not good enough to catch them. That may$ R& \4 a9 s0 H+ W7 d
be true, logically, but definitely will not make the case if there is ever a
6 ]6 o" U$ G' J, e2 rhearing by the governing body for water sports, FINA, to determine if Ye
# S- Y4 \, x0 k! h! B) Lhas doped. To ask whether it is possible to obtain a false negative in a' R$ t; F+ h& R, M/ k, U* J ^ o/ w
drug test looks like a rigged question to me. Of course it is possible:) C D6 x9 p! z8 G, k4 E, P' ?" r, [
other than the athlete taking a drug that the test is not designed to detect
- m. M: Z* }2 y, anyone who has taken quantum 101 will tell you that everything is; H& b. Q$ f0 t4 I
probabilistic in nature, and so there is a probability that the drug in an* _4 N [; c9 y6 g6 o* C0 G
athlete’s system could tunnel out right at the moment of the test. A slight
, h- Y& |: Y% ~& xchance it may be, but should we disregard all test results because of it?
: b& j2 D. ]8 W1 L- U% h& R5 A$ fLet’s be practical and reasonable, and accept that the World Anti-Doping9 A& [8 ]6 g3 M+ x; ~9 ~) G" i
agency (WADA) is competent at its job. Ye’s urine sample will be stored for8 i' e0 ` ^& F# S+ _
eight years after the contest for future testing as technology advances.4 f6 E, {1 p$ K+ D; d) |" c
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-1 g& }, }4 f u1 D- V" f+ e
competition drug test is already in effect, which Callaway failed to mention
9 t( W) N! ?/ f: \& H/ o3 ]3 {. As noted in the president of WADA’s press release, drug testing for- w0 u! q2 j/ q) \' j6 W
Olympians began at least six months before the opening of the London% E% y- I$ Q+ z7 O# h! x
Olympics. Furthermore, 107 athletes have been banned from this Olympics for
8 s6 n( y b4 {( q9 E+ N& `doping. That may be the reason that “everyone will pass at the Olympic' _# `8 F( F" P/ f' a
games. Hardly anyone fails in competition testing” — those who did dope* ~, G& r% S$ n: x; s" A: G" x
have already been caught and sanctioned. Callaway is free to suggest that a: r4 X" q/ ]/ f5 o
player could have doped beforehand and fooled the test at the game, but this( C5 s8 W! a; u6 ]& w
possibility is certainly ruled out for Ye.
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Over all, even though Callaway did not falsify any data, he did (
3 w2 W; n/ }+ v. L- v0 gintentionally or not) cherry-pick data that, in my view, are far too* Z3 Y4 Z4 T9 O% @# G% V% k* t
suggestive to be fair and unbiased. If you want to cover a story of a
+ l1 h9 `1 o, g7 p& S qsuspected doping from a scientific point of view, be impartial and provide* v) i9 L" `0 A$ i6 _2 s
all the facts for the reader to judge. You are entitled to your
: \4 i$ K5 x0 g. O: |$ a" Hinterpretation of the facts, and the expression thereof in your piece,* \! |; |- o. F) ?4 D! g6 Z# H6 S
explicitly or otherwise, but showing only evidence that favours your
* T" Y. T9 f; N5 r, Xargument is hardly good science or journalism. Such an article in a journal; z- d+ e5 Y, P, ~
such as Nature is not an appropriate example of how scientific research or
k2 B- q4 p- f. ?5 N5 t- |* T- J: l preporting should be done. |
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