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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" z( R; r# P+ D% ~+ Z
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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FROM LAI JIANG, Department of Chemistry, University of Pennsylvania
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1 z' q5 |) O$ @6 T4 c( NIt is a shame to see Nature — which nearly all scientists, including myself+ U. U2 H( o2 ^7 r: Z
, regard as one of the most prestigious and influential physical-science- |0 F0 P/ f' c9 `0 Q
magazines — publish a thinly veiled biased article like this. Granted, this6 n+ i: ^2 d" G7 B A, O, d3 F
is not a peer-reviewed scientific article and did not go through the
9 P+ h5 Q7 f6 O; h% k4 Tscrutiny of picking referees. But to serve as a channel for the general& E% p3 }* O/ m: N
populace to be in touch with and appreciate science, the authors and editors% v1 d9 F9 O6 U1 e7 I
should at least present the readers with facts within the proper context,
) F' ?" ^+ N W& Z7 W2 lwhich they blatantly failed to do.. M5 G. g( o1 E+ [. l( G6 w2 ~
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First, to identify Ye’s performance increase, Ewen Callaway compared her6 c* K+ i& a: x: m- ?' J
Olympic 400-metre IM time with her performance at the World Championships in9 R2 }0 ` a7 r/ O& I, Y
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “9 Y5 T& N( W' M( O: v
anomalous” improvement of around 7 seconds (6.72 s). In fact, her previous
8 ^0 s h, P; b# J2 Npersonal best was 4:33.79 at the Asian Games in 2010. This leads to an
" A) w9 }7 Y ]% fimprovement of 5.38 seconds. In a sporting event in which 0.1 s can be the
) l2 x$ ~% u+ V7 Mdifference between the gold and silver medal, I see no reason for 5.38 s to
, |) [3 z' @/ e; M: D+ u; [: Sbe treated as 7 s.: s% K. O$ A6 h8 Z0 k4 X1 O9 z& B
1 d2 W, j; p( W* @2 ?* VSecond, as previously pointed out, Ye is only 16 years old and her body is
% w+ f4 E) Q, a7 m, ? ustill developing. Bettering oneself by 5 seconds over two years may seem
# Q" E( ~( P& b' l; p% Bimpossible for an adult swimmer, but it certainly happens among youngsters.
( E- S( v3 p/ v! e$ e! HAn interview with Australian gold medallist Ian Thorpe revealed that his 400- l% B% T+ x0 Z
-metre freestyle time improved by 5 seconds between the ages of 15 and 16.+ |, `: O3 l" p' C: U
For regular people, including Callaway, it may be hard to imagine what an
) ]+ o! _, z% m$ R, Zelite swimmer can achieve as he or she matures and undergoes scientific and+ }! r4 V: T9 M
persistent training. But jumping to the conclusion that it is “anomalous”0 o# }0 t$ |9 z" m; i3 m
based on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.
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/ O) ~, G" L8 P" k" p! ZThird, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook! Y' ]3 ?9 \% I, C- c1 e
example of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in5 F' j/ {: s0 J$ s1 W& t9 r" B3 D$ B5 v
the last 50 metres, but Lochte had a huge lead in the first 300 metres, so
/ E. s) [( i2 w xhe chose not to push himself too hard and to conserve his energy for later9 x! ~6 }: U/ ~$ {
events (whether this conforms to the Olympic spirit and the ‘use one’s
% d% g7 @! j. D7 `3 ? N9 ]7 R! @best efforts to win a match’ requirement that the Badminton World6 h6 N: u0 E6 M$ `4 A
Federation recently invoked to disqualify four badminton pairs is another
% X A5 \" j9 N0 t( `topic worth discussing, though probably not in Nature). Ye, on the other$ H/ _, i% |! {" [1 f
hand, was trailing behind after the first 300 metres and relied on freestyle
$ n' }9 `8 _8 ?8 h: z. l/ ?, in which she has an edge, to win the race. Failing to mention this; j' _" H9 J n8 `* u @) h* I$ p
strategic difference, as well as the fact that Lochte is 23.25 seconds& L. \1 c" ~! }( C3 f; r1 B
faster (4:05.18) than Ye overall, creates the illusion that a woman swam
+ \5 @4 g7 _! N& zfaster than the best man in the same sport, which sounds impossible. Putting7 @# X# {5 f3 ]9 E
aside the gender argument, I believe this is still a leading question that2 K. v3 k L7 z* [4 O
implies to the reader that there is something fishy going on.; Q' r" V/ B+ w& j
* t0 s; T3 P5 qFourth is another example of cherry-picking. In the same event, there are
& F, Q; |6 L y, S: c% g5 n) c. Efour male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93
8 ]- R, H2 ]* l. t+ ~s) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s- A6 n* f8 k3 {* P- i$ L
), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns
J7 b# w& a% G1 x! F- K! ]/ F# Cout, if we are just talking about the last 50 metres in a 400-metre IM,* s2 n& h9 B8 J) t4 x* ^6 F
Lochter is not the example I would have used if I were the author. What kind
% o0 u0 u8 _' W4 c5 S: f& k4 gof scientific rigorousness is Callaway trying to demonstrate here? Is it6 f7 U* x1 _7 s
logical that if Lochter is the champion, we should assume that he leads in
# v5 P8 _. P* q' Q1 ]every split? That would be a terrible way to teach the public how science+ _9 ?- X0 S+ G: t1 ~+ m
works.
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Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and6 S4 j8 Q& P6 D- w# f/ t2 Y6 N
implies that a drug test cannot rule out the possibility of doping. Is this6 ]2 Q/ V! Q, R+ |+ r$ O$ T
kind of agnosticism what Nature really wants to teach its readers? By that" u+ y* N1 K5 [+ T
standard, I estimate that at least half of the peer-reviewed scientific
# \# v* F8 h) P4 P: `papers in Nature should be retracted. How can one convince the editors and, a. p0 b/ r! t) R3 F2 M* \: l9 g
reviewers that their proposed theory works for every possible case? One
; [- Y8 {6 C6 e( i+ z. `& G% Rcannot. One chooses to apply the theory to typical examples and to
, k1 f, f: \0 V7 t/ M* K- a9 udemonstrate that in (hopefully) all scenarios considered, the theory works
( J# P& u: u. Wto a degree, and that that should warrant publication until a counterexample
; K. G1 _8 v* V2 W1 @# {9 Qis found. I could imagine that Callaway has a sceptical mind, which is
% k1 L$ s/ w' \0 M0 lcrucial to scientific thinking, but that would be put to better use if he
8 T0 K; G9 c, G5 t0 ~wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly
+ C3 G4 i0 ^. K' V2 q1 gadvanced, non-detectable drug that the Chinese have come up with in the/ c8 k2 P2 O8 S" O' d8 p: f1 A
past 4 years (they obviously did not have it in Beijing, otherwise why not
/ d) ?. J3 y/ Y9 Suse it and woo the audience at home?), based on data and rational derivation
" g! [8 p$ x4 q, \. This article, however, can be interpreted as saying that all athletes are
( J# a$ {8 R7 M6 e0 _$ E- y, Fdoping and the authorities are just not good enough to catch them. That may
: W$ _# e f! f$ ibe true, logically, but definitely will not make the case if there is ever a
* r4 E8 }, B. p7 }' ghearing by the governing body for water sports, FINA, to determine if Ye
3 g" M9 c; P+ D A2 Z" ^/ {has doped. To ask whether it is possible to obtain a false negative in a g5 x) F* q! _5 G% e" [" J
drug test looks like a rigged question to me. Of course it is possible:
" Q4 t# A3 P! N; H Q: gother than the athlete taking a drug that the test is not designed to detect
7 f5 y2 G6 t9 I4 A8 _7 ^+ d, anyone who has taken quantum 101 will tell you that everything is
+ @0 l2 V% f( b# h- F; Mprobabilistic in nature, and so there is a probability that the drug in an
6 S0 H6 }7 g# W" ?+ x( {& w% bathlete’s system could tunnel out right at the moment of the test. A slight5 p6 k' N& t) I* Y6 t- a6 [' h
chance it may be, but should we disregard all test results because of it?
* U- T' {8 }1 j8 t1 g8 LLet’s be practical and reasonable, and accept that the World Anti-Doping
4 b" I; w' P& i6 { w6 r( iagency (WADA) is competent at its job. Ye’s urine sample will be stored for$ G4 _$ F* ]' Z; ], z+ }( Z
eight years after the contest for future testing as technology advances.# v- ^' P6 T2 J
Innocent until proven guilty, shouldn’t it be?
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/ F! u B& j! QSixth, and the last point I would like to make, is that the out-of-( H1 A9 t1 J; Y4 e3 s
competition drug test is already in effect, which Callaway failed to mention
& Y7 e& ~4 w C8 C. As noted in the president of WADA’s press release, drug testing for0 F! c1 a5 n$ u9 K4 Q9 @
Olympians began at least six months before the opening of the London
2 ~3 o y. M2 |% dOlympics. Furthermore, 107 athletes have been banned from this Olympics for
, o6 E8 h/ O" M2 t8 M Pdoping. That may be the reason that “everyone will pass at the Olympic
# S7 m( X2 g- Sgames. Hardly anyone fails in competition testing” — those who did dope
4 U% V; S" g* S2 m, o& x: Rhave already been caught and sanctioned. Callaway is free to suggest that a
& R0 R( ]/ }: Q) m. f! nplayer could have doped beforehand and fooled the test at the game, but this! f+ y+ J w$ d. d2 k$ o
possibility is certainly ruled out for Ye.) Y# s' r0 l2 @" S) f) l
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Over all, even though Callaway did not falsify any data, he did (
7 E' Z2 j3 Y2 F9 ?. wintentionally or not) cherry-pick data that, in my view, are far too
0 c! q- y, ]# N3 Xsuggestive to be fair and unbiased. If you want to cover a story of a
8 J F% n1 \5 }suspected doping from a scientific point of view, be impartial and provide
) V2 U! p1 W- r; Dall the facts for the reader to judge. You are entitled to your
, p0 n% c, s) g w) l* Z8 Xinterpretation of the facts, and the expression thereof in your piece,
* x+ _# r* u1 B9 m( Fexplicitly or otherwise, but showing only evidence that favours your
) h5 b- Z/ @+ \' {. q9 Nargument is hardly good science or journalism. Such an article in a journal
+ g( m! z0 ?1 L/ [! Isuch as Nature is not an appropriate example of how scientific research or
1 u$ ]" [8 e+ q zreporting should be done. |
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