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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" P( [! J2 A' V6 }5 U
如果是中国长大的,英语能到这种程度真是很不简单。3 g j1 O( h' I; @* z
3 D( M S2 r; P; k: C: whttp://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html
" R1 J( W2 Q, B7 |2 }& C) g% g! s
9 `$ S* y: ?0 f( O' g: r% QFROM LAI JIANG, Department of Chemistry, University of Pennsylvania6 H8 m: k* B3 W3 L
P" Q0 ^& i# U6 [It is a shame to see Nature — which nearly all scientists, including myself
& {3 ~+ x, e' d* P, regard as one of the most prestigious and influential physical-science
2 i) M3 O/ P. a& V/ Bmagazines — publish a thinly veiled biased article like this. Granted, this
* g( P5 y4 Z; a3 R' S7 W' His not a peer-reviewed scientific article and did not go through the B1 l* z" ` r
scrutiny of picking referees. But to serve as a channel for the general
/ L0 U) N/ d- r4 E" A; k2 B* ]5 Tpopulace to be in touch with and appreciate science, the authors and editors" n p ^( s' y, ]
should at least present the readers with facts within the proper context,/ F/ i7 i" ?: ~0 ~8 z5 m
which they blatantly failed to do.5 n t, X# Q* ~ i/ I* R5 _
* l1 ^; O/ J6 w3 |# vFirst, to identify Ye’s performance increase, Ewen Callaway compared her
, c# Q8 o! _+ h. P% p qOlympic 400-metre IM time with her performance at the World Championships in
/ }% Z R1 u5 L& ?4 ^- b4 J2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “* R7 {# h, Y% H5 j. I, I9 W. A X
anomalous” improvement of around 7 seconds (6.72 s). In fact, her previous2 f) E- j4 p. A- w) _
personal best was 4:33.79 at the Asian Games in 2010. This leads to an, a8 q' |6 d# x+ O1 m. X7 |
improvement of 5.38 seconds. In a sporting event in which 0.1 s can be the
) }5 }# ?8 a2 B+ i7 @% Edifference between the gold and silver medal, I see no reason for 5.38 s to
8 }0 ^8 V+ _' W- e4 nbe treated as 7 s.7 R+ _4 @6 M2 R& m! v& \
6 B& u* H! z' VSecond, as previously pointed out, Ye is only 16 years old and her body is
/ C S4 G8 ]6 ]' g9 Q$ b' Jstill developing. Bettering oneself by 5 seconds over two years may seem' b& G; Q" @- O! t8 w
impossible for an adult swimmer, but it certainly happens among youngsters.& ]% u& G3 H# R- N: R* {
An interview with Australian gold medallist Ian Thorpe revealed that his 400* K# m r# w% I" W/ Q4 K& ?1 @
-metre freestyle time improved by 5 seconds between the ages of 15 and 16.
% K5 j! \4 F+ E' M; C4 j2 bFor regular people, including Callaway, it may be hard to imagine what an
; k0 M" k) [0 h. G: {4 L; Relite swimmer can achieve as he or she matures and undergoes scientific and9 `" V, C$ q; |
persistent training. But jumping to the conclusion that it is “anomalous”
' [1 Q# \3 ^2 R b3 g9 sbased on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.
3 R( Y# P+ W- G. R/ C7 p3 \
/ J, F/ B( \! j5 N( ^ VThird, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook
9 p& ]8 G5 c5 s+ K1 s3 U! g4 D3 qexample of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in
: q$ q0 [8 w% D! p `$ V1 Othe last 50 metres, but Lochte had a huge lead in the first 300 metres, so: C O5 ]! V* ~9 a- _2 Y+ L) y9 I* |
he chose not to push himself too hard and to conserve his energy for later: Y4 H5 h0 y4 i+ T! p! E/ E% J+ a) l8 F( J: T
events (whether this conforms to the Olympic spirit and the ‘use one’s- I* q4 k9 o" x1 N
best efforts to win a match’ requirement that the Badminton World3 j; L5 q# V R8 R7 z
Federation recently invoked to disqualify four badminton pairs is another
5 |. d8 b. W, N! o5 y0 _topic worth discussing, though probably not in Nature). Ye, on the other. x' ?! N) Z+ E2 ~7 K
hand, was trailing behind after the first 300 metres and relied on freestyle
, b8 | T8 n9 u, in which she has an edge, to win the race. Failing to mention this- b3 R0 z$ t5 E/ ], n& J7 @9 g3 k4 [! ]
strategic difference, as well as the fact that Lochte is 23.25 seconds
" K1 ]* a/ u' {. f0 |2 dfaster (4:05.18) than Ye overall, creates the illusion that a woman swam% r* S# K% x" p W
faster than the best man in the same sport, which sounds impossible. Putting
) U& U5 [* S* ~" a" a4 Y9 Z# ]# laside the gender argument, I believe this is still a leading question that9 x# R! C7 u& `' P" S' S0 z& y5 U
implies to the reader that there is something fishy going on.
9 I: U; [* P$ y' S2 B7 k' |9 r% X$ Y4 z" O' x* r. |
Fourth is another example of cherry-picking. In the same event, there are! F0 c1 `4 Y# W- z3 h! C
four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.935 ]2 d4 D5 ?7 G
s) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s* Y& C. f! M( J k
), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns9 T" y% A3 R/ I9 t$ U
out, if we are just talking about the last 50 metres in a 400-metre IM,
6 `) L: z$ w% i, ^+ DLochter is not the example I would have used if I were the author. What kind
4 ^% a7 U9 z, `8 s) x2 pof scientific rigorousness is Callaway trying to demonstrate here? Is it9 r; w8 X6 M9 H) ?7 N1 O1 i- Y! G
logical that if Lochter is the champion, we should assume that he leads in
4 v0 t2 w# E4 {2 X0 m- ^/ P+ Jevery split? That would be a terrible way to teach the public how science
4 `: k6 b6 j2 S; Wworks.# f+ Y6 S! P1 m! P8 d+ y, l7 E
" C4 D+ n( z' k" P% ZFifth is the issue I oppose the most. Callaway quotes Ross Tucker and5 o5 V% h9 ?+ }9 j; T
implies that a drug test cannot rule out the possibility of doping. Is this& {) Q# ?5 v5 y' W
kind of agnosticism what Nature really wants to teach its readers? By that
$ H* I; Q, P8 {/ h) cstandard, I estimate that at least half of the peer-reviewed scientific$ v( P: N8 s7 ]6 ?; J( h
papers in Nature should be retracted. How can one convince the editors and
8 F2 y- F4 M& L+ ?$ o& s- Ireviewers that their proposed theory works for every possible case? One" q3 z+ X" q/ R
cannot. One chooses to apply the theory to typical examples and to
6 Y1 s, F4 M2 p/ g: x/ V) }6 ^demonstrate that in (hopefully) all scenarios considered, the theory works. [7 y) b/ i6 y5 H8 ]1 Y8 m
to a degree, and that that should warrant publication until a counterexample, c1 u% N( ? _& F0 C$ O0 t
is found. I could imagine that Callaway has a sceptical mind, which is) r& A7 [' V+ _9 ^# H
crucial to scientific thinking, but that would be put to better use if he5 J+ y7 a0 j5 Z2 b3 F% j& l
wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly2 n+ j7 @6 `, A
advanced, non-detectable drug that the Chinese have come up with in the
! C+ s# L! q) ^! z4 j N4 _past 4 years (they obviously did not have it in Beijing, otherwise why not2 d4 C) q" e9 y, k# Q. [+ d: I. v' a
use it and woo the audience at home?), based on data and rational derivation
, f* @* D: z0 ^, U" U$ R$ e. This article, however, can be interpreted as saying that all athletes are
1 @( m- {; C9 _4 j$ R( ?doping and the authorities are just not good enough to catch them. That may& y" T0 k" d1 G8 h
be true, logically, but definitely will not make the case if there is ever a
- q6 D, k" p8 ~2 I2 x( _% chearing by the governing body for water sports, FINA, to determine if Ye
, m7 Y+ X: A2 z" C% M% _3 r: Uhas doped. To ask whether it is possible to obtain a false negative in a
# E& N) ^) q: E" \( r! kdrug test looks like a rigged question to me. Of course it is possible:6 c0 H- c# t3 g/ V! X+ ]5 M
other than the athlete taking a drug that the test is not designed to detect
' D8 U) ~+ r1 p% ]' N; N, anyone who has taken quantum 101 will tell you that everything is
@/ u. @6 b. B+ r; J# _* A) \probabilistic in nature, and so there is a probability that the drug in an
! L# _4 Y; Y. `athlete’s system could tunnel out right at the moment of the test. A slight
) s, X/ X9 ]& G0 bchance it may be, but should we disregard all test results because of it?
! B: K/ ~( {* W9 K; t& s4 C+ GLet’s be practical and reasonable, and accept that the World Anti-Doping
2 t$ U* w2 m, o O1 |agency (WADA) is competent at its job. Ye’s urine sample will be stored for
' p2 s7 s; Q; H1 @eight years after the contest for future testing as technology advances.
5 Y7 f/ u. t- @0 {# k6 e/ B* GInnocent until proven guilty, shouldn’t it be?
7 t: b9 |# U* Z# u8 V, d9 i
& m W0 M1 l8 t5 ]2 }Sixth, and the last point I would like to make, is that the out-of-3 ?, ^3 b2 W: {* d
competition drug test is already in effect, which Callaway failed to mention
2 z2 v% Y, }; w! Y8 F) ]" H. As noted in the president of WADA’s press release, drug testing for
+ W0 }/ A$ r% m6 kOlympians began at least six months before the opening of the London' f) l" b! P; j" l& V1 y% H2 z
Olympics. Furthermore, 107 athletes have been banned from this Olympics for# z. T0 X: V6 y9 |! X/ p+ o
doping. That may be the reason that “everyone will pass at the Olympic
, I: m+ h& G2 @games. Hardly anyone fails in competition testing” — those who did dope. f! k/ y# B8 X3 b6 x$ w+ ^1 b7 j
have already been caught and sanctioned. Callaway is free to suggest that a: t; @: r5 K8 y; `/ t
player could have doped beforehand and fooled the test at the game, but this0 b* }+ ?/ ?9 Z
possibility is certainly ruled out for Ye.3 a4 d S' M- @ |$ p- [& O9 t
8 K8 d1 H( e! eOver all, even though Callaway did not falsify any data, he did (# _ u; N" U, [2 b, O" N9 {
intentionally or not) cherry-pick data that, in my view, are far too+ T" d6 @+ q; n% P3 Z$ R
suggestive to be fair and unbiased. If you want to cover a story of a
8 E" i: d- h6 p5 y) d. M' csuspected doping from a scientific point of view, be impartial and provide
- ^2 e6 ^0 X4 n u Fall the facts for the reader to judge. You are entitled to your% ?* n( ]$ n' l9 Y$ _+ ?1 K
interpretation of the facts, and the expression thereof in your piece,. W' H+ M* U& W- _( N5 x( J: x
explicitly or otherwise, but showing only evidence that favours your
' h+ L4 c: G7 x% oargument is hardly good science or journalism. Such an article in a journal0 F4 |4 v" I1 R
such as Nature is not an appropriate example of how scientific research or
4 w) I) R3 k9 R/ Y; e5 p9 D# qreporting should be done. |
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