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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 JIANG3 _( w- L% `; i
如果是中国长大的,英语能到这种程度真是很不简单。5 W9 k1 V, S" T5 R) I1 ~8 A
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http://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html5 o7 W4 I8 G9 `0 m: U2 c% k
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FROM LAI JIANG, Department of Chemistry, University of Pennsylvania
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- X5 X& a a3 h# Q5 h) V. X! BIt is a shame to see Nature — which nearly all scientists, including myself
$ `. e# M/ T! Y z% x, regard as one of the most prestigious and influential physical-science7 O' R3 T% |- V ?& @
magazines — publish a thinly veiled biased article like this. Granted, this5 W' l5 ^; i. k* C2 M0 v
is not a peer-reviewed scientific article and did not go through the$ {+ ^0 k: z0 P H
scrutiny of picking referees. But to serve as a channel for the general
9 a2 S# X, w2 e8 V& Kpopulace to be in touch with and appreciate science, the authors and editors" |1 K! K. Z) \
should at least present the readers with facts within the proper context,
# R) L4 G+ f4 h1 L" vwhich they blatantly failed to do.
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, L% J# U, c7 V7 {( [2 }0 [2 l; F; GFirst, to identify Ye’s performance increase, Ewen Callaway compared her( z6 E. U( ]+ [9 S& B7 J8 {
Olympic 400-metre IM time with her performance at the World Championships in
4 v f |9 X1 q% s2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “
/ [6 Y6 ?; o8 y# O3 P( Oanomalous” improvement of around 7 seconds (6.72 s). In fact, her previous8 R. d: Y6 _' W* C* i
personal best was 4:33.79 at the Asian Games in 2010. This leads to an
3 W; g6 d. X' i: bimprovement of 5.38 seconds. In a sporting event in which 0.1 s can be the* b, F9 G( M3 p6 B1 g1 N2 S
difference between the gold and silver medal, I see no reason for 5.38 s to! p6 [, q9 x5 R% v( t X
be treated as 7 s.
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Second, as previously pointed out, Ye is only 16 years old and her body is* H9 |9 a9 Y" ?! a
still developing. Bettering oneself by 5 seconds over two years may seem
+ Q' X( m7 C' X3 |& z* simpossible for an adult swimmer, but it certainly happens among youngsters." ] H1 s' _* c( P& \
An interview with Australian gold medallist Ian Thorpe revealed that his 4001 a5 @; i! f! Y% C" n; S$ M: j
-metre freestyle time improved by 5 seconds between the ages of 15 and 16.2 v" X; ~& R5 g; G/ e* R
For regular people, including Callaway, it may be hard to imagine what an9 E) H+ @% S d
elite swimmer can achieve as he or she matures and undergoes scientific and' G! ?6 s( n# H' w
persistent training. But jumping to the conclusion that it is “anomalous”" J! A; x. y" {3 H; v' s; ^! ]' y
based on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound./ z+ i- K8 i& `' g8 A
- z" l2 h ]' d# v6 ?7 L# Q: lThird, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook+ o4 C; H) I/ W. `
example of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in- {/ [) W( F( k6 a4 `8 c
the last 50 metres, but Lochte had a huge lead in the first 300 metres, so* N; g# j# h" W N9 }5 T4 \
he chose not to push himself too hard and to conserve his energy for later6 r& i' L! P3 E! A
events (whether this conforms to the Olympic spirit and the ‘use one’s
i7 X2 x" J. s9 C6 C1 jbest efforts to win a match’ requirement that the Badminton World
+ C7 |5 s- C9 _' m0 f- p' x6 v2 VFederation recently invoked to disqualify four badminton pairs is another
, @- s' @' y! j* Y; Rtopic worth discussing, though probably not in Nature). Ye, on the other; i. `% I Z* S4 Q. l
hand, was trailing behind after the first 300 metres and relied on freestyle6 o/ {# T( \6 [
, in which she has an edge, to win the race. Failing to mention this
/ m* X6 r0 R+ p0 I' Tstrategic difference, as well as the fact that Lochte is 23.25 seconds3 H. R7 H; [5 r' f& M
faster (4:05.18) than Ye overall, creates the illusion that a woman swam# E9 r, `7 A5 Y; n4 K3 M. B
faster than the best man in the same sport, which sounds impossible. Putting
' d. F9 H1 O; f. m2 Yaside the gender argument, I believe this is still a leading question that0 @8 x; I% u* X9 }8 `
implies to the reader that there is something fishy going on.7 A! Y: f. r7 f/ a4 W
: {, e) W2 ~: S$ L3 x$ E; A/ OFourth is another example of cherry-picking. In the same event, there are
; d, C! I4 u% G6 g9 B2 ]# t; J/ Pfour male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93
. A2 q2 `4 m9 [- T7 ?, l9 Y! ps) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s
5 a) O4 X, h# D. q), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns
4 V" Q( p& t* V7 h4 M! G3 P) @out, if we are just talking about the last 50 metres in a 400-metre IM,6 `8 @, w. G& ]
Lochter is not the example I would have used if I were the author. What kind
' Z! |. M9 F5 r7 M# C" Jof scientific rigorousness is Callaway trying to demonstrate here? Is it
' V, f3 [6 ~2 s0 Elogical that if Lochter is the champion, we should assume that he leads in, y) C. i- s+ D# U; Q
every split? That would be a terrible way to teach the public how science. o, [& V5 p$ @1 }
works.
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- f+ f; o; }* E, ]5 K5 L0 E% QFifth is the issue I oppose the most. Callaway quotes Ross Tucker and
. M) S6 G" U6 \, ~- Y. H8 I0 O% _: Eimplies that a drug test cannot rule out the possibility of doping. Is this
. g; d+ A5 [) D' W4 ~kind of agnosticism what Nature really wants to teach its readers? By that
% o4 r) Q: v. Lstandard, I estimate that at least half of the peer-reviewed scientific
- {. a2 a; B6 npapers in Nature should be retracted. How can one convince the editors and
/ f. p" q$ y, Z M; Q6 X! Creviewers that their proposed theory works for every possible case? One. E9 a/ h# T# X( l: f6 j H" P
cannot. One chooses to apply the theory to typical examples and to
3 ~6 s2 o' b. K( I+ y: B3 ydemonstrate that in (hopefully) all scenarios considered, the theory works
5 S4 e6 U/ }1 p7 i) Oto a degree, and that that should warrant publication until a counterexample1 u, K, G2 B) I3 }7 n
is found. I could imagine that Callaway has a sceptical mind, which is/ Z" q) M( ?' @( x! V
crucial to scientific thinking, but that would be put to better use if he0 G3 [ ]& L. _
wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly* @* |8 [- L" |; j* \
advanced, non-detectable drug that the Chinese have come up with in the; a7 l8 b. M! r n
past 4 years (they obviously did not have it in Beijing, otherwise why not
9 U/ s9 U* n$ R7 [* ?" \use it and woo the audience at home?), based on data and rational derivation
6 ~( i6 B3 p* }7 r# S; M& Q# U. This article, however, can be interpreted as saying that all athletes are
2 r4 q# ^/ S4 m. I, \doping and the authorities are just not good enough to catch them. That may
" d0 l: k- H" m& t2 z1 i+ x) cbe true, logically, but definitely will not make the case if there is ever a! Q0 A; w) t) F
hearing by the governing body for water sports, FINA, to determine if Ye
2 F+ z3 D, ?. F5 h$ P& |8 v! hhas doped. To ask whether it is possible to obtain a false negative in a1 `: V2 ~' ?" t" {( K- Q2 D# m, q
drug test looks like a rigged question to me. Of course it is possible:
& l* |% F6 _3 m& G$ L& `other than the athlete taking a drug that the test is not designed to detect: f& {" F. \3 H0 e5 D3 b# ]
, anyone who has taken quantum 101 will tell you that everything is. Z) U8 v4 G( e% k+ p
probabilistic in nature, and so there is a probability that the drug in an! R+ ]* @* M; l* j9 c: J6 y
athlete’s system could tunnel out right at the moment of the test. A slight
5 d( f; D/ H4 W; p& U; |% Mchance it may be, but should we disregard all test results because of it?3 _9 P# B) r: p; [" u5 p, o
Let’s be practical and reasonable, and accept that the World Anti-Doping0 N* p$ M, M3 t3 W$ O/ v
agency (WADA) is competent at its job. Ye’s urine sample will be stored for" [ _, r) P) y* d1 Y, j/ q2 Y
eight years after the contest for future testing as technology advances.
! T- f- s) r" w, w2 w2 W% q! `Innocent until proven guilty, shouldn’t it be?7 p2 C# d, f" c- @6 k6 o) p
# K" m3 W4 K2 }& OSixth, and the last point I would like to make, is that the out-of-
- l" k! i" C9 Ocompetition drug test is already in effect, which Callaway failed to mention- N/ U! ?& L* o" K2 C) L9 @
. As noted in the president of WADA’s press release, drug testing for
5 \1 w( T; n6 J2 O' bOlympians began at least six months before the opening of the London
" Y( S0 x4 z8 a- z9 l3 \/ lOlympics. Furthermore, 107 athletes have been banned from this Olympics for
9 A' d4 H' C' j1 u7 wdoping. That may be the reason that “everyone will pass at the Olympic9 T: N: m$ _! _5 W0 C. d
games. Hardly anyone fails in competition testing” — those who did dope5 g. D8 }" ~* ]* u- U4 Y" G7 g
have already been caught and sanctioned. Callaway is free to suggest that a$ D0 `2 n$ w. E; S0 N; x
player could have doped beforehand and fooled the test at the game, but this+ l* D! `0 X4 [: i6 m9 \; c; W2 O
possibility is certainly ruled out for Ye.
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Over all, even though Callaway did not falsify any data, he did (
4 U# M5 a- e& h; Q9 [% e- Bintentionally or not) cherry-pick data that, in my view, are far too
. F& [+ L+ ?3 u$ Psuggestive to be fair and unbiased. If you want to cover a story of a
`7 L" A! i" x3 s/ |suspected doping from a scientific point of view, be impartial and provide
8 L) ]# Q# B7 k, O# Uall the facts for the reader to judge. You are entitled to your
: h+ j+ f, P# U+ Z# s2 Finterpretation of the facts, and the expression thereof in your piece,
" ]! h0 r0 B: p7 @& ~: mexplicitly or otherwise, but showing only evidence that favours your
! j" T; q3 w& F$ jargument is hardly good science or journalism. Such an article in a journal7 [' x# d5 K+ ?4 q/ n* \
such as Nature is not an appropriate example of how scientific research or1 U' J3 `6 E* g( ]6 L
reporting should be done. |
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