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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. Q- `# X: ]/ o( a, J. r! l7 p
如果是中国长大的,英语能到这种程度真是很不简单。2 T3 a( T# K8 i1 z/ f
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http://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html' W1 B* J0 L- ~ a( |/ c
3 O& ^3 i' j( XFROM 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) F, S* ^9 {, V+ A3 d. z
, regard as one of the most prestigious and influential physical-science
) d3 T3 o, X3 n) cmagazines — publish a thinly veiled biased article like this. Granted, this
9 N) j' A( L7 S5 e8 b8 J9 m& Ris not a peer-reviewed scientific article and did not go through the# t/ f! E$ F2 L# I( q) z0 |+ j
scrutiny of picking referees. But to serve as a channel for the general3 V4 S! q- q1 Z+ o2 U
populace to be in touch with and appreciate science, the authors and editors
. Q/ ?( T# L' Y2 _7 [" Ishould at least present the readers with facts within the proper context,4 T2 o U+ y2 M7 A
which they blatantly failed to do.
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, e7 F! f- K$ ~7 T. ~First, to identify Ye’s performance increase, Ewen Callaway compared her
$ J2 e2 p9 | s3 h$ sOlympic 400-metre IM time with her performance at the World Championships in
4 L2 f( @& x) x2 e2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “, o% R: \% E w- E5 T7 R
anomalous” improvement of around 7 seconds (6.72 s). In fact, her previous
1 O3 _: n T2 ?) }+ Z: J2 Cpersonal best was 4:33.79 at the Asian Games in 2010. This leads to an
4 Y* \) |& J7 P% x( D3 w" c, z8 Qimprovement of 5.38 seconds. In a sporting event in which 0.1 s can be the
0 }; G" c& f" A$ wdifference between the gold and silver medal, I see no reason for 5.38 s to3 x7 F% b3 z& g+ ~: C1 ?, t# P' _
be treated as 7 s.. _/ i, S3 x3 `, ~
- K4 o# Z- F ?8 x7 ]Second, as previously pointed out, Ye is only 16 years old and her body is: |4 L# j' q$ |2 B) G/ u
still developing. Bettering oneself by 5 seconds over two years may seem
_2 q* u) G0 t3 O2 o! aimpossible for an adult swimmer, but it certainly happens among youngsters.- z" m$ H S( t8 i {( E
An interview with Australian gold medallist Ian Thorpe revealed that his 400+ T( m/ X( h- _1 z
-metre freestyle time improved by 5 seconds between the ages of 15 and 16.# Z" T/ k2 o5 U
For regular people, including Callaway, it may be hard to imagine what an
Y5 k6 M" ^$ D! W( helite swimmer can achieve as he or she matures and undergoes scientific and
7 g0 \! d8 k# `persistent training. But jumping to the conclusion that it is “anomalous”
% @; p4 F) E4 c6 q1 y( N9 Y" o$ ibased on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.. B( @: E+ l, N( G2 h; p6 Z
( x' V1 T) I& ?1 z9 LThird, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook# s" P$ r/ y$ N3 A0 l6 F7 o J& x
example of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in$ ^0 |# f3 N5 u4 x: e$ _) \* h
the last 50 metres, but Lochte had a huge lead in the first 300 metres, so& {: s( N0 N( m: G) c! s
he chose not to push himself too hard and to conserve his energy for later
' |' Z$ J6 t F' _- C: Y4 `events (whether this conforms to the Olympic spirit and the ‘use one’s
# t C! E/ l4 ]8 `3 Abest efforts to win a match’ requirement that the Badminton World3 T( w x& g+ I% }. c* g7 n
Federation recently invoked to disqualify four badminton pairs is another
. |3 t6 w- F8 |7 f% ` z5 Btopic worth discussing, though probably not in Nature). Ye, on the other ]; @+ b& A2 ~2 L2 E- p. d( b
hand, was trailing behind after the first 300 metres and relied on freestyle
2 `( q! y6 F: A1 {& v. f! r0 I, in which she has an edge, to win the race. Failing to mention this- Y: `/ w* @3 o, ^8 |4 a
strategic difference, as well as the fact that Lochte is 23.25 seconds
- L( q8 W1 `' H+ M# R: D# u# T; Ufaster (4:05.18) than Ye overall, creates the illusion that a woman swam" P* s# q3 {6 [ e2 k; w
faster than the best man in the same sport, which sounds impossible. Putting
& g! _$ T, d1 H& ` `aside the gender argument, I believe this is still a leading question that
0 d9 ^4 P) b" e; d% D- k @implies to the reader that there is something fishy going on.
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5 Y4 W. M# m/ N2 K/ \' f- o9 sFourth is another example of cherry-picking. In the same event, there are# t7 \8 H8 H# J" S0 i/ x5 V
four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93
$ A/ S1 S' y- _- n$ Us) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s
3 o! {; w* R/ i), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns
" ~; p1 n. S5 u1 F3 Q& q: e7 rout, if we are just talking about the last 50 metres in a 400-metre IM,
% E! V5 w) v h" |Lochter is not the example I would have used if I were the author. What kind
' A9 @+ w# ~9 {& q+ v5 C) G, q" c8 t. Tof scientific rigorousness is Callaway trying to demonstrate here? Is it% j# [/ S* }& W/ t/ S, \
logical that if Lochter is the champion, we should assume that he leads in
) F* r- r1 g3 ?& f. Zevery split? That would be a terrible way to teach the public how science3 X# x& p g6 t, L' j; [- z
works.
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Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and+ z$ K u6 l. ]
implies that a drug test cannot rule out the possibility of doping. Is this2 s' @3 H9 o z# M/ S
kind of agnosticism what Nature really wants to teach its readers? By that
/ w0 y5 }8 } r9 }& f G, L; ~standard, I estimate that at least half of the peer-reviewed scientific
% H) |# T# u. y% P/ K7 n# H; u) lpapers in Nature should be retracted. How can one convince the editors and
: |' v5 c# f; [3 Yreviewers that their proposed theory works for every possible case? One# }: r+ O4 V/ E! L
cannot. One chooses to apply the theory to typical examples and to
2 U& E- w2 q- [& [ r3 Odemonstrate that in (hopefully) all scenarios considered, the theory works7 o4 L; I6 N' d4 h: S! e. z
to a degree, and that that should warrant publication until a counterexample
: v2 J: e+ R6 l0 A+ ^is found. I could imagine that Callaway has a sceptical mind, which is% h" W; F: T% U7 W P' q! t
crucial to scientific thinking, but that would be put to better use if he
# e% i" C5 ] N* v' c$ k+ qwrote a peer-reviewed paper that discussed the odds of Ye doping on a highly& E7 G- r3 u3 V! }4 f8 s4 W
advanced, non-detectable drug that the Chinese have come up with in the2 E' g4 o/ X/ g# h
past 4 years (they obviously did not have it in Beijing, otherwise why not
. J+ ~( P, m) [6 |) Nuse it and woo the audience at home?), based on data and rational derivation
" e# b* N9 k0 F. This article, however, can be interpreted as saying that all athletes are
! o+ j' o; q, n: Zdoping and the authorities are just not good enough to catch them. That may
3 d4 l4 _; H2 V, Z9 V4 r8 w# ?* e% `be true, logically, but definitely will not make the case if there is ever a2 I+ O: Y/ `) U% i2 B8 t
hearing by the governing body for water sports, FINA, to determine if Ye% v. b& v4 b' ?5 g+ ^$ E
has doped. To ask whether it is possible to obtain a false negative in a
: T: L$ X) s' O- ^3 r2 i9 v$ edrug test looks like a rigged question to me. Of course it is possible:. j, u$ P1 c7 J& J2 q7 y9 f
other than the athlete taking a drug that the test is not designed to detect
( D( Q1 {9 r" G H4 r" s, anyone who has taken quantum 101 will tell you that everything is: O3 f3 A+ D2 N2 A0 E* N2 L/ u
probabilistic in nature, and so there is a probability that the drug in an
0 [* _; s( e) p6 H5 z5 d# `! qathlete’s system could tunnel out right at the moment of the test. A slight5 w9 s- }6 j1 w
chance it may be, but should we disregard all test results because of it?
$ G/ N0 A5 I- W4 g- M3 B- E* CLet’s be practical and reasonable, and accept that the World Anti-Doping
7 L5 M% k- R1 p1 W4 f- W. ^agency (WADA) is competent at its job. Ye’s urine sample will be stored for7 @5 ?+ ?. {3 T4 G. l1 I
eight years after the contest for future testing as technology advances.
* @3 P5 F- `$ x% b B2 YInnocent until proven guilty, shouldn’t it be?6 R% x1 e& m! d) I* w
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Sixth, and the last point I would like to make, is that the out-of-
. P' E+ ]9 X# L5 A1 {1 k' qcompetition drug test is already in effect, which Callaway failed to mention! G" V; w: c& N! l6 L2 ]
. As noted in the president of WADA’s press release, drug testing for
$ [+ K! N7 R$ U, LOlympians began at least six months before the opening of the London Z0 K3 F4 x0 q- D$ L( s( l3 k
Olympics. Furthermore, 107 athletes have been banned from this Olympics for4 E1 P. s+ i3 Z7 C% {' S7 P% {
doping. That may be the reason that “everyone will pass at the Olympic
$ a' Q8 w# @ Xgames. Hardly anyone fails in competition testing” — those who did dope
- c* o4 [1 Y& I" C/ z7 Q5 Dhave already been caught and sanctioned. Callaway is free to suggest that a: y9 b$ O) E; H5 @) j
player could have doped beforehand and fooled the test at the game, but this
. y5 e% c+ ?3 Ypossibility is certainly ruled out for Ye.
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Over all, even though Callaway did not falsify any data, he did (
6 y' M8 z" }* Cintentionally or not) cherry-pick data that, in my view, are far too& B/ c2 n, N/ u+ y# t; U- \
suggestive to be fair and unbiased. If you want to cover a story of a5 ?! \7 P% M2 J/ q4 a# U* F
suspected doping from a scientific point of view, be impartial and provide
4 y3 x( u6 L" p& N5 f8 oall the facts for the reader to judge. You are entitled to your
. P. \5 p5 i3 N3 qinterpretation of the facts, and the expression thereof in your piece,
) S7 M& E" p( k6 h6 zexplicitly or otherwise, but showing only evidence that favours your; t, G5 O @' W: q$ I
argument is hardly good science or journalism. Such an article in a journal7 \2 u; Y7 G. {9 g& e
such as Nature is not an appropriate example of how scientific research or
6 X+ N* W$ Y4 ^0 E9 `# ireporting should be done. |
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