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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
7 T: ?+ q3 ]7 y/ R+ ~* S如果是中国长大的,英语能到这种程度真是很不简单。8 S2 g1 m( h& e K4 E% i9 ~
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http://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html4 i& a5 t& X7 z% R( K1 v2 t( \4 D
. d0 B8 @: y4 H H& J& [FROM LAI JIANG, Department of Chemistry, University of Pennsylvania; ^/ N0 a$ C# `1 K S. g
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It is a shame to see Nature — which nearly all scientists, including myself* ]/ B- B$ k, d" ^
, regard as one of the most prestigious and influential physical-science; ^" d) R. l- w4 [* d3 b8 f% m
magazines — publish a thinly veiled biased article like this. Granted, this
' r9 J' Z! Y r$ _1 P+ fis not a peer-reviewed scientific article and did not go through the/ F8 n; B1 A. ^4 I1 x: H. N
scrutiny of picking referees. But to serve as a channel for the general
( |: U+ J* _$ B$ Q, o) ?6 Y+ L+ mpopulace to be in touch with and appreciate science, the authors and editors
0 ]3 H, T: C6 X c- f/ `, T [$ N. y& ushould at least present the readers with facts within the proper context,4 P7 q" W! a2 O5 k2 _% u4 y, b2 W m: Z
which they blatantly failed to do." r4 h6 e8 r2 X
' J2 N/ k3 R l8 Z# z& p- C8 `First, to identify Ye’s performance increase, Ewen Callaway compared her' K/ T7 N, ~, v- f
Olympic 400-metre IM time with her performance at the World Championships in
# s' M6 v( k+ o; \- m7 @2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “
, g1 C# Y( u8 K' `6 m4 H! X+ M8 W Janomalous” improvement of around 7 seconds (6.72 s). In fact, her previous$ X) _5 o3 U4 @% O
personal best was 4:33.79 at the Asian Games in 2010. This leads to an
% \: x. B' _/ e1 h/ l* Jimprovement of 5.38 seconds. In a sporting event in which 0.1 s can be the+ s( P& m3 _7 f; U
difference between the gold and silver medal, I see no reason for 5.38 s to
) Y$ @% }- b/ y/ b- q9 ibe treated as 7 s.
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2 m% H9 A+ v. SSecond, as previously pointed out, Ye is only 16 years old and her body is# s( B0 T3 j* f3 y9 I
still developing. Bettering oneself by 5 seconds over two years may seem
6 t0 @# O5 _9 H) p8 u( ~impossible for an adult swimmer, but it certainly happens among youngsters.
4 E, W) }- x: C6 }) ?7 `An interview with Australian gold medallist Ian Thorpe revealed that his 400
! f7 r5 Z* G$ S-metre freestyle time improved by 5 seconds between the ages of 15 and 16.9 a% l& H: u- Y- r3 _$ f$ v0 d
For regular people, including Callaway, it may be hard to imagine what an" {- ^* R5 R7 r0 t) _9 D: U0 i
elite swimmer can achieve as he or she matures and undergoes scientific and8 A! c3 ^; M8 B: ?* U
persistent training. But jumping to the conclusion that it is “anomalous”
5 M/ q1 l* I. e$ a# |0 z0 ?, Ybased on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.
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Third, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook
' r# s+ o$ x- iexample of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in
2 v" C' }, P7 i) t* H) ]the last 50 metres, but Lochte had a huge lead in the first 300 metres, so+ f& N& X) f# x7 b7 C
he chose not to push himself too hard and to conserve his energy for later
% V! @6 k8 X* \0 P* B- [" Sevents (whether this conforms to the Olympic spirit and the ‘use one’s
5 R* U* K8 N7 \7 T G1 K" q! wbest efforts to win a match’ requirement that the Badminton World! D$ k+ }9 x9 |7 O
Federation recently invoked to disqualify four badminton pairs is another7 v7 f B0 G, w9 ~# h4 g5 W1 O
topic worth discussing, though probably not in Nature). Ye, on the other2 Q9 m ^# I; ?% O
hand, was trailing behind after the first 300 metres and relied on freestyle4 G* h3 K, F7 p i* N+ W' u
, in which she has an edge, to win the race. Failing to mention this
8 s4 a3 S; q; s* I$ P4 Dstrategic difference, as well as the fact that Lochte is 23.25 seconds. G" a3 s0 n) Q+ s
faster (4:05.18) than Ye overall, creates the illusion that a woman swam7 x' P9 O. v! Z
faster than the best man in the same sport, which sounds impossible. Putting
( l7 r* F$ m- D) Z! W4 L9 O4 haside the gender argument, I believe this is still a leading question that) x# ~! D- d2 Z
implies to the reader that there is something fishy going on.. k. v4 t) D; j$ q8 c
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Fourth is another example of cherry-picking. In the same event, there are
% M2 t- k; G0 Qfour male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93! A. O9 d/ ?; {2 v1 Z O9 ^4 |
s) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s @$ a; g% Z- G' a) _
), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns7 y2 Q {, E/ }# q0 r& U4 q
out, if we are just talking about the last 50 metres in a 400-metre IM,
* M/ C. F* L. G6 QLochter is not the example I would have used if I were the author. What kind& P8 c1 O! ?* D7 R B( G" M- Z
of scientific rigorousness is Callaway trying to demonstrate here? Is it
! G9 G; m: z5 V5 [: [: K4 ulogical that if Lochter is the champion, we should assume that he leads in$ {( ]9 x P H7 a: n z
every split? That would be a terrible way to teach the public how science2 W, K8 }, x4 a( G# {
works., c) s: |& M5 \1 g' T' r
& [. ?8 V u! R- L# y, `4 kFifth is the issue I oppose the most. Callaway quotes Ross Tucker and1 j8 @2 [, {4 o \
implies that a drug test cannot rule out the possibility of doping. Is this+ ]/ n" k9 e0 P7 g% X' L: k
kind of agnosticism what Nature really wants to teach its readers? By that
( @" ]5 T, h; k& A. Ustandard, I estimate that at least half of the peer-reviewed scientific% f1 e) h: ^; [4 e/ R' Y2 Y
papers in Nature should be retracted. How can one convince the editors and
5 D# P' ]6 i2 z ?reviewers that their proposed theory works for every possible case? One1 B- L- l; `, b+ ]/ Y; |
cannot. One chooses to apply the theory to typical examples and to
2 Y: E7 u6 Z' @demonstrate that in (hopefully) all scenarios considered, the theory works
6 ?) ?# F% T& k* R# j Zto a degree, and that that should warrant publication until a counterexample
0 W' q `; A) g; S' {% z; Ois found. I could imagine that Callaway has a sceptical mind, which is
" C( U% Y& S- _+ c6 Icrucial to scientific thinking, but that would be put to better use if he$ u: g! W" L4 @4 c W
wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly
& a1 h( A2 e5 c/ sadvanced, non-detectable drug that the Chinese have come up with in the
/ u" C( e! g+ G4 e0 epast 4 years (they obviously did not have it in Beijing, otherwise why not; `: h' R+ O L; \9 G4 w4 J5 E
use it and woo the audience at home?), based on data and rational derivation
# e! V2 ?( Z5 d r9 V5 P) X. This article, however, can be interpreted as saying that all athletes are3 ?! z& _- a5 Q j1 b' p
doping and the authorities are just not good enough to catch them. That may# p' S7 ^ e. K* U. e) c+ F
be true, logically, but definitely will not make the case if there is ever a9 s8 J; ]: I' h, z) C
hearing by the governing body for water sports, FINA, to determine if Ye
) ?' B' _: h" a% {has doped. To ask whether it is possible to obtain a false negative in a- F: t4 q9 G; I+ q0 k$ j
drug test looks like a rigged question to me. Of course it is possible:0 T- a( Z* G7 W0 I; |! v
other than the athlete taking a drug that the test is not designed to detect
1 S/ v. A0 I- H% y; Y, anyone who has taken quantum 101 will tell you that everything is
- v" n9 N5 o* D0 v$ Fprobabilistic in nature, and so there is a probability that the drug in an* k8 _1 G U0 C. v5 q/ I
athlete’s system could tunnel out right at the moment of the test. A slight: N& C/ E" V; L; {8 G. m
chance it may be, but should we disregard all test results because of it?) {% _/ r; u$ \2 W% h
Let’s be practical and reasonable, and accept that the World Anti-Doping
$ ~ O2 A" O: q* yagency (WADA) is competent at its job. Ye’s urine sample will be stored for
2 n/ t5 t6 n1 X6 ]6 deight years after the contest for future testing as technology advances.
# K0 j. ?6 Y" n' w1 @% c) NInnocent until proven guilty, shouldn’t it be?) @6 E. S0 L, l& U0 M) \5 v R: E$ _) ]8 }
v1 J8 J+ s4 w' wSixth, and the last point I would like to make, is that the out-of-# {% A8 H& Z% J& }; h! q7 t
competition drug test is already in effect, which Callaway failed to mention9 ? v/ u# u `8 U& N6 i+ h
. As noted in the president of WADA’s press release, drug testing for
/ L$ F, x) Q. D H7 U* E, A: d5 sOlympians began at least six months before the opening of the London. \8 \' F; S1 ?9 ~, u% K
Olympics. Furthermore, 107 athletes have been banned from this Olympics for; F. x' P7 R' x9 h0 [" K
doping. That may be the reason that “everyone will pass at the Olympic
; N& N+ g/ _0 }0 s! E; x' \5 Igames. Hardly anyone fails in competition testing” — those who did dope
. q$ b7 k2 U; O# _have already been caught and sanctioned. Callaway is free to suggest that a
( S% y- Z+ c* H% J& gplayer could have doped beforehand and fooled the test at the game, but this
4 }0 O! H: O1 Q2 z" W( }+ R' Fpossibility is certainly ruled out for Ye.
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) G% Q+ r9 K& hOver all, even though Callaway did not falsify any data, he did (% L- P; H! S! H) {4 u4 o
intentionally or not) cherry-pick data that, in my view, are far too) N$ P% z: u- {8 \' N
suggestive to be fair and unbiased. If you want to cover a story of a: e+ s& u; L* S
suspected doping from a scientific point of view, be impartial and provide& {; O' j* z( w2 f- M
all the facts for the reader to judge. You are entitled to your
2 `! ^ g+ I$ V; U2 P, dinterpretation of the facts, and the expression thereof in your piece,
% v$ Q: ?+ X+ C: V! lexplicitly or otherwise, but showing only evidence that favours your$ x3 M: [1 j) U/ f* t0 q* o
argument is hardly good science or journalism. Such an article in a journal9 C& t) z: F; a
such as Nature is not an appropriate example of how scientific research or
5 X( F( e2 U' B: c( {reporting should be done. |
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