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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
# { t$ o7 Q/ x% k) Q, @如果是中国长大的,英语能到这种程度真是很不简单。5 R6 U3 [! b+ K
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http://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html2 ]+ `% K' X4 ^
) V# P9 ~8 ~) L& b. c, LFROM LAI JIANG, Department of Chemistry, University of Pennsylvania6 @9 w- X1 j0 J
0 P$ X' w. ~1 s: X, q! ]It is a shame to see Nature — which nearly all scientists, including myself
# ~& x* L% F. D; s7 B3 ?, regard as one of the most prestigious and influential physical-science9 e5 c" m/ M" \# L# z7 r
magazines — publish a thinly veiled biased article like this. Granted, this* c: }& m0 k% s3 d
is not a peer-reviewed scientific article and did not go through the9 v0 k* N$ ?4 H# ]! q1 ]) J
scrutiny of picking referees. But to serve as a channel for the general
5 r) n# t' L2 ~6 e5 f8 Y( epopulace to be in touch with and appreciate science, the authors and editors
; L% U$ f( n/ \3 Xshould at least present the readers with facts within the proper context,7 i0 V: }. W( E* k* f
which they blatantly failed to do.8 p/ x6 a4 r, |. e7 ~
/ z, H' h! y4 @5 L: I& lFirst, to identify Ye’s performance increase, Ewen Callaway compared her1 e+ R8 x0 J; N. |- ]+ B/ g+ R; M
Olympic 400-metre IM time with her performance at the World Championships in
$ ^) Y# Q( k1 ^' l5 a2 X2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “
) h8 t! T4 Q- tanomalous” improvement of around 7 seconds (6.72 s). In fact, her previous
& z" m3 v8 \: P( jpersonal best was 4:33.79 at the Asian Games in 2010. This leads to an
0 [6 S$ X) d7 s; m5 S# t! r/ mimprovement of 5.38 seconds. In a sporting event in which 0.1 s can be the
+ a4 A! Z* |1 b+ M- U1 ?+ M( ^1 zdifference between the gold and silver medal, I see no reason for 5.38 s to
+ \* k, Q N, sbe treated as 7 s. p& M* |$ f1 `: \3 H, X
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Second, as previously pointed out, Ye is only 16 years old and her body is
" n/ x. }0 L$ I' B% ]: r/ jstill developing. Bettering oneself by 5 seconds over two years may seem
; z2 v4 H" g! H7 Eimpossible for an adult swimmer, but it certainly happens among youngsters.
+ e$ v8 ?# v$ P8 P& E1 D/ X0 f$ TAn interview with Australian gold medallist Ian Thorpe revealed that his 400. r6 z2 U2 o/ t9 N
-metre freestyle time improved by 5 seconds between the ages of 15 and 16.) N3 g, s" C* H. [% e) w; i( D3 U2 s9 |
For regular people, including Callaway, it may be hard to imagine what an. _$ w, h3 A P
elite swimmer can achieve as he or she matures and undergoes scientific and
# M; r; o* U" y5 S0 k1 ]persistent training. But jumping to the conclusion that it is “anomalous”' _$ d$ g* B) Y/ w: _
based on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.
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s# p" @6 C9 L) @# _( X; jThird, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook; C7 T2 V0 n7 Q' G
example of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in
4 K% V0 r+ W8 Z! z* P5 B9 s" ^the last 50 metres, but Lochte had a huge lead in the first 300 metres, so
& @' }0 j$ q" p" S# ^he chose not to push himself too hard and to conserve his energy for later( x0 H6 b. [9 s3 z, T6 t
events (whether this conforms to the Olympic spirit and the ‘use one’s: o, }1 N! y5 A" C' @/ g! X- ?
best efforts to win a match’ requirement that the Badminton World
; }" s" C* w) T- ^! B2 b3 dFederation recently invoked to disqualify four badminton pairs is another, Z; Y) I% n6 d( ?. R. H
topic worth discussing, though probably not in Nature). Ye, on the other6 c5 N- ~3 i% a8 l( P$ |
hand, was trailing behind after the first 300 metres and relied on freestyle
6 D- F& O' v$ M& L* l% w, in which she has an edge, to win the race. Failing to mention this
; w% Q1 s& e, i: R7 g, istrategic difference, as well as the fact that Lochte is 23.25 seconds
0 _- P1 Q- a( l$ L" f5 Jfaster (4:05.18) than Ye overall, creates the illusion that a woman swam0 V1 y- C; }0 h2 u
faster than the best man in the same sport, which sounds impossible. Putting
. E1 P# N0 C9 L, l; Zaside the gender argument, I believe this is still a leading question that) K0 n: s. g$ K$ t1 i3 l
implies to the reader that there is something fishy going on.% e; @) i \6 n; c- x: U+ w
2 N9 h! O- U) n E# G! M- A/ Y e8 wFourth is another example of cherry-picking. In the same event, there are. s9 [5 Q: a) P7 l: s3 X& `
four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93& r' x. Z) t8 z3 l
s) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s v" s0 g8 c) z! V. j. D6 s. ~
), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns: J: N! e" B) W/ `3 M
out, if we are just talking about the last 50 metres in a 400-metre IM,
* x& p6 C) B; y# ?& K; g Z5 KLochter is not the example I would have used if I were the author. What kind
) i& f. ~6 \* E5 {0 xof scientific rigorousness is Callaway trying to demonstrate here? Is it. t- y/ f6 L1 F; \+ ?6 v
logical that if Lochter is the champion, we should assume that he leads in
2 [( W! J. O: N1 j, y4 Z Zevery split? That would be a terrible way to teach the public how science
0 x+ `, Y: j( G) bworks.; \ t9 Q9 z1 }7 b$ ?
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Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and$ w/ R9 E9 ]# H. [2 z
implies that a drug test cannot rule out the possibility of doping. Is this5 {5 p$ c+ ^" V4 g5 _; N
kind of agnosticism what Nature really wants to teach its readers? By that
1 P8 @- U7 e3 G9 f7 k% c$ lstandard, I estimate that at least half of the peer-reviewed scientific
% m; l2 U" s0 d7 c1 h/ j5 Tpapers in Nature should be retracted. How can one convince the editors and
2 I; {8 Z7 u6 b: sreviewers that their proposed theory works for every possible case? One
5 D7 r$ [. \- v! ocannot. One chooses to apply the theory to typical examples and to
" w, v. o; b2 o. Gdemonstrate that in (hopefully) all scenarios considered, the theory works" [' ^) j6 K8 E# V3 }0 _& T3 M
to a degree, and that that should warrant publication until a counterexample3 p/ I6 q7 a4 U5 m+ b7 ~3 u
is found. I could imagine that Callaway has a sceptical mind, which is9 W' l* V$ |- H- l1 a4 J& U
crucial to scientific thinking, but that would be put to better use if he, M1 T# R% I, W d2 T Z9 t ^
wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly1 G5 j, J1 T5 q6 @* l
advanced, non-detectable drug that the Chinese have come up with in the
* K9 I4 j0 }4 |past 4 years (they obviously did not have it in Beijing, otherwise why not# C2 J. V# O) D2 g& x
use it and woo the audience at home?), based on data and rational derivation
! v3 P2 z' V; [: M. This article, however, can be interpreted as saying that all athletes are
- Q6 ]8 z9 }- I. xdoping and the authorities are just not good enough to catch them. That may
2 `# Q) A" `+ b1 m; r }( mbe true, logically, but definitely will not make the case if there is ever a
5 V ^7 q8 ~8 M3 v" A0 j+ D: Rhearing by the governing body for water sports, FINA, to determine if Ye( y7 [8 o: j1 U1 ^
has doped. To ask whether it is possible to obtain a false negative in a
- O7 d: y% v. d8 Jdrug test looks like a rigged question to me. Of course it is possible:
' N! \9 B# Q5 v5 Hother than the athlete taking a drug that the test is not designed to detect
# ]1 ?: c- A' w3 f) s, anyone who has taken quantum 101 will tell you that everything is
' g7 O% Y6 {! A X: ~! Z( e& F4 U2 yprobabilistic in nature, and so there is a probability that the drug in an5 i2 a2 f& w) M' Y. m! V0 C
athlete’s system could tunnel out right at the moment of the test. A slight
. @1 X' P1 H' _5 G0 cchance it may be, but should we disregard all test results because of it?
2 @6 t' Z: U3 C3 U m) T! `Let’s be practical and reasonable, and accept that the World Anti-Doping/ X: n4 g9 _+ T- o5 Q* Q
agency (WADA) is competent at its job. Ye’s urine sample will be stored for
, H0 Z9 p$ a4 |5 beight years after the contest for future testing as technology advances.
) U% {' M( u8 l4 R' {) {1 ^Innocent until proven guilty, shouldn’t it be?" K r+ u1 f* p, j$ M9 |: @9 n) u, ?4 g) d
/ T7 p( s3 ?% [ M# [# S' |Sixth, and the last point I would like to make, is that the out-of-9 H9 O; x: M9 A( a$ a5 _* |
competition drug test is already in effect, which Callaway failed to mention3 S3 v1 A8 ]. E( v$ ?! a
. As noted in the president of WADA’s press release, drug testing for* h0 ]& s, k' o8 \. p! [$ @
Olympians began at least six months before the opening of the London' {5 N! E; }) Q" `: E% p- Z
Olympics. Furthermore, 107 athletes have been banned from this Olympics for0 c) l: O6 j5 h, A- |9 s x
doping. That may be the reason that “everyone will pass at the Olympic
& }8 H( u: {" B# y2 d, ugames. Hardly anyone fails in competition testing” — those who did dope
' j( R! M1 A5 Dhave already been caught and sanctioned. Callaway is free to suggest that a
* W6 F! C6 \. aplayer could have doped beforehand and fooled the test at the game, but this
r$ D3 |; a: D3 V2 q7 opossibility is certainly ruled out for Ye.
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9 V& P2 W0 z9 h2 f0 c! {Over all, even though Callaway did not falsify any data, he did (6 g8 s" X) l& z) a! e* [ F4 g
intentionally or not) cherry-pick data that, in my view, are far too
& G! V0 p% j- `/ E0 Jsuggestive to be fair and unbiased. If you want to cover a story of a
7 |6 l x( ^3 wsuspected doping from a scientific point of view, be impartial and provide
2 C. m7 s8 H$ W" o3 \: W8 ball the facts for the reader to judge. You are entitled to your
' {& c+ E( @ q* @# _& {interpretation of the facts, and the expression thereof in your piece,* u% `* C' z0 q ~( J
explicitly or otherwise, but showing only evidence that favours your& y! W7 @ O4 h" b' O& v9 e
argument is hardly good science or journalism. Such an article in a journal
! ~- G. y& [/ L: Xsuch as Nature is not an appropriate example of how scientific research or
$ S* A; }7 B, Qreporting should be done. |
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