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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. N3 U) p* f3 C M, Z% C2 R
如果是中国长大的,英语能到这种程度真是很不简单。9 r% m2 y+ N* A, n3 J# x" z
! N; e' E! ]: r& P( X. khttp://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html9 p# }% j% f( @: R8 \
6 ]( e4 P9 d" V( M$ _; |/ nFROM LAI JIANG, Department of Chemistry, University of Pennsylvania% K H: m5 R9 v( k7 l4 e4 g5 {. i
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It is a shame to see Nature — which nearly all scientists, including myself" I1 H2 o6 S* o, r6 @7 j7 ]
, regard as one of the most prestigious and influential physical-science8 Y0 G7 F8 X5 S# |$ V6 i$ F
magazines — publish a thinly veiled biased article like this. Granted, this
) T- B" T% _9 ?is not a peer-reviewed scientific article and did not go through the: O8 G' c1 F2 a0 S
scrutiny of picking referees. But to serve as a channel for the general; v _* {5 B1 Y+ o# K4 m9 i
populace to be in touch with and appreciate science, the authors and editors
, G; V O) w+ s/ h: Lshould at least present the readers with facts within the proper context,
- u1 F; |3 P3 Y* d' E! K X$ bwhich they blatantly failed to do.
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First, to identify Ye’s performance increase, Ewen Callaway compared her
" W) O* a4 q0 }7 mOlympic 400-metre IM time with her performance at the World Championships in
. @* [3 ?! M8 Y& K2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “5 c# Q5 J3 v# \0 o4 Y2 w4 U
anomalous” improvement of around 7 seconds (6.72 s). In fact, her previous% M- @, c# f0 c# z$ g/ @
personal best was 4:33.79 at the Asian Games in 2010. This leads to an! Y8 w: _1 l8 K' N
improvement of 5.38 seconds. In a sporting event in which 0.1 s can be the
0 O7 A- P4 @) x6 C& Sdifference between the gold and silver medal, I see no reason for 5.38 s to' n1 ~. F' V- V- h/ s" I
be treated as 7 s.( _; R* ?/ ^# O& ?8 k5 A* y
* N& w6 Y( B( T: XSecond, as previously pointed out, Ye is only 16 years old and her body is
& H" S* k: Y3 n4 R8 l. Rstill developing. Bettering oneself by 5 seconds over two years may seem& ^* d8 B; c8 E6 [
impossible for an adult swimmer, but it certainly happens among youngsters. C5 o0 b7 Y& V% r% [6 {1 `+ h; T- S
An interview with Australian gold medallist Ian Thorpe revealed that his 400
+ g7 U/ B- \! P2 U% ?' w6 g-metre freestyle time improved by 5 seconds between the ages of 15 and 16.+ s. L4 w1 h6 [; X+ d; M- _
For regular people, including Callaway, it may be hard to imagine what an+ B: U; @: E) s- D: M8 ?
elite swimmer can achieve as he or she matures and undergoes scientific and
. P/ w: |! V6 r% {, ]. `# _persistent training. But jumping to the conclusion that it is “anomalous”
" D: _( h& M Sbased 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
: B9 g0 c5 [. V* i* }example of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in# Q# g. B% a# o ?9 f& D
the last 50 metres, but Lochte had a huge lead in the first 300 metres, so
) s7 w+ I9 y5 q% jhe chose not to push himself too hard and to conserve his energy for later4 {8 A- \; a; x( p! A" u
events (whether this conforms to the Olympic spirit and the ‘use one’s0 r) J: X9 z3 p, U t
best efforts to win a match’ requirement that the Badminton World2 {% W5 d3 a) F' R6 d- ~
Federation recently invoked to disqualify four badminton pairs is another$ M; Z7 G- X9 B6 v* | N6 V$ G
topic worth discussing, though probably not in Nature). Ye, on the other$ }6 d1 c+ y2 _% o
hand, was trailing behind after the first 300 metres and relied on freestyle& x$ Q F8 m5 d3 U& ?
, in which she has an edge, to win the race. Failing to mention this
" T" {' O: W- B( `3 rstrategic difference, as well as the fact that Lochte is 23.25 seconds
1 C' ]; g! O6 K7 {+ wfaster (4:05.18) than Ye overall, creates the illusion that a woman swam
$ o4 J1 ^' U4 W! N5 a, cfaster than the best man in the same sport, which sounds impossible. Putting
( M/ B5 W" z) C& Y, c: c, \3 naside the gender argument, I believe this is still a leading question that1 d# U8 X1 m. h h+ f+ Y! G3 R& g& X, Q
implies to the reader that there is something fishy going on.
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9 _9 l/ S" B# {4 {Fourth is another example of cherry-picking. In the same event, there are/ |. j5 U* _" O" @
four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93# |( ]9 L! z6 d& {8 A; ^) u- _2 [' l5 A& |" Q
s) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s
0 u: f# W! U& s G, _2 r), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns
7 ]1 a; \6 L$ f3 ?, g+ Dout, if we are just talking about the last 50 metres in a 400-metre IM,6 S7 Y- `) W, N, ?
Lochter is not the example I would have used if I were the author. What kind
0 V# O5 S0 _' t/ R7 B0 ?of scientific rigorousness is Callaway trying to demonstrate here? Is it
. f/ W7 R2 s% | glogical that if Lochter is the champion, we should assume that he leads in, V. B! o9 ~0 w
every split? That would be a terrible way to teach the public how science
E, l, c- V* R7 }3 g4 |$ W/ n, S Lworks.
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Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and
}3 B% `( ^6 N+ D y- [- dimplies that a drug test cannot rule out the possibility of doping. Is this$ g% I6 m% f7 N( O" p O8 x- @
kind of agnosticism what Nature really wants to teach its readers? By that. m/ V# m0 O4 L) }
standard, I estimate that at least half of the peer-reviewed scientific8 l7 s+ `* T5 B, L$ }" I
papers in Nature should be retracted. How can one convince the editors and
* j; M2 h' \/ d6 Sreviewers that their proposed theory works for every possible case? One
8 p! C( D- T2 G. p" Dcannot. One chooses to apply the theory to typical examples and to
( a; f, Q+ Q5 ~demonstrate that in (hopefully) all scenarios considered, the theory works
% n0 @, k) G. f0 n3 ato a degree, and that that should warrant publication until a counterexample
) i2 N& r) r d- K' {is found. I could imagine that Callaway has a sceptical mind, which is
4 u; u G# h' D! Ecrucial to scientific thinking, but that would be put to better use if he
$ U$ y. m3 n: [wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly
8 y% W. F2 K: u+ f' `advanced, non-detectable drug that the Chinese have come up with in the
4 h* M) F. H3 ~' h7 zpast 4 years (they obviously did not have it in Beijing, otherwise why not7 ?& q0 ]. k+ e* j9 e
use it and woo the audience at home?), based on data and rational derivation# j8 a- ^% V9 A
. This article, however, can be interpreted as saying that all athletes are
8 p* k3 ~ s6 w9 Xdoping and the authorities are just not good enough to catch them. That may- n7 ^& S' z( M8 U. S# K) T
be true, logically, but definitely will not make the case if there is ever a
4 ]( S, Q$ K' F. Whearing by the governing body for water sports, FINA, to determine if Ye
+ J/ `; v, N# v$ X2 Bhas doped. To ask whether it is possible to obtain a false negative in a& [& z/ g* F1 F$ H
drug test looks like a rigged question to me. Of course it is possible:$ V& k& H6 A5 j' E0 F
other than the athlete taking a drug that the test is not designed to detect
i9 N+ @7 ^! w. [$ |, anyone who has taken quantum 101 will tell you that everything is
' b8 a# g# Y/ [# J2 m$ h' i& nprobabilistic in nature, and so there is a probability that the drug in an
( {# u) h9 I. M" [( mathlete’s system could tunnel out right at the moment of the test. A slight: q5 b! t i% @. C
chance it may be, but should we disregard all test results because of it?
9 M" t+ k8 N+ l( K. ~Let’s be practical and reasonable, and accept that the World Anti-Doping
( k" `$ G4 u$ ? F. Kagency (WADA) is competent at its job. Ye’s urine sample will be stored for
( |* E. o* |5 U6 b! Jeight years after the contest for future testing as technology advances." c5 a- L: P7 @9 l" X: }) W3 p' \
Innocent until proven guilty, shouldn’t it be?
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( z5 R+ N: F1 Y ^' |' |Sixth, and the last point I would like to make, is that the out-of-& G' r+ i4 @; c/ x' f4 O
competition drug test is already in effect, which Callaway failed to mention
3 n. B: _4 E+ J. As noted in the president of WADA’s press release, drug testing for
0 G* D# D% K9 c7 Y- `$ p: uOlympians began at least six months before the opening of the London) L& i! v; @8 y4 U3 t
Olympics. Furthermore, 107 athletes have been banned from this Olympics for3 Q9 f- F, l) F& o5 e% {
doping. That may be the reason that “everyone will pass at the Olympic
# M9 O, ?0 {1 W+ xgames. Hardly anyone fails in competition testing” — those who did dope
) A2 a& E! W* u2 F, {; n9 Uhave already been caught and sanctioned. Callaway is free to suggest that a
" j: H" h, i+ b0 g4 g" d/ `* Tplayer could have doped beforehand and fooled the test at the game, but this
/ R! w; F' i4 |9 M* `possibility is certainly ruled out for Ye.; U, [4 ? M) p" F6 S
, D! N0 A, F! E! f+ aOver all, even though Callaway did not falsify any data, he did (
7 Z: ~$ C; f9 B! q( R- Cintentionally or not) cherry-pick data that, in my view, are far too
# n# Q2 p* L; z" ^, i1 v+ bsuggestive to be fair and unbiased. If you want to cover a story of a+ \" E4 m0 |8 E
suspected doping from a scientific point of view, be impartial and provide
5 F6 `! G" l# ~, s4 Dall the facts for the reader to judge. You are entitled to your
& g! ]3 S4 A) O) y+ V; A- N0 rinterpretation of the facts, and the expression thereof in your piece,- x' y3 Q/ t0 ]1 {) O: R8 f( C. |
explicitly or otherwise, but showing only evidence that favours your
+ w8 k( S) l! V+ cargument is hardly good science or journalism. Such an article in a journal
* B+ a1 c5 s3 L" H& b1 fsuch as Nature is not an appropriate example of how scientific research or0 G4 {! F) H/ m" a& Z' @
reporting should be done. |
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