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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 JIANG8 n/ k" R$ c w- C
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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2 E/ V* T! H8 zhttp://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html
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5 v: I I3 F& O0 NFROM LAI JIANG, Department of Chemistry, University of Pennsylvania; U( }0 B* i& I" C% I
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It is a shame to see Nature — which nearly all scientists, including myself5 t; ~7 y+ ` i
, regard as one of the most prestigious and influential physical-science/ q) H1 e6 S# ]1 V* r% b- O+ A
magazines — publish a thinly veiled biased article like this. Granted, this
. V j- N& G+ ~! Wis not a peer-reviewed scientific article and did not go through the% O9 N- z& J5 v9 e. V
scrutiny of picking referees. But to serve as a channel for the general
5 j( D+ y2 G7 p+ r* b& Dpopulace to be in touch with and appreciate science, the authors and editors
2 |1 W; ?" Q A, ?0 a8 fshould at least present the readers with facts within the proper context,
7 B! U4 ~+ T6 d' `7 M1 K" {/ mwhich they blatantly failed to do.
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First, to identify Ye’s performance increase, Ewen Callaway compared her
& b9 b" B) ^5 T( E# n( v# F8 ]& mOlympic 400-metre IM time with her performance at the World Championships in
( @2 Y/ p2 X( e& [! T" `2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “: ]2 j) u* j% l: [0 x
anomalous” improvement of around 7 seconds (6.72 s). In fact, her previous
, ?8 M4 [1 {% p; rpersonal best was 4:33.79 at the Asian Games in 2010. This leads to an
/ @* I/ L+ h! c' @- V+ I8 fimprovement of 5.38 seconds. In a sporting event in which 0.1 s can be the
/ c% p+ m" h0 _+ r& k Zdifference between the gold and silver medal, I see no reason for 5.38 s to! b0 z( t- P% e t
be treated as 7 s.$ j7 r3 T7 Y$ r1 j: D6 }' a
4 e) e$ H, w, r; d1 @! YSecond, as previously pointed out, Ye is only 16 years old and her body is9 ]7 N1 m: r* P! y4 w% x
still developing. Bettering oneself by 5 seconds over two years may seem
" C" r# D; u: D& p( Z' I& u6 B; C6 Wimpossible for an adult swimmer, but it certainly happens among youngsters.
4 p9 [8 n8 O/ dAn interview with Australian gold medallist Ian Thorpe revealed that his 400
* r0 L2 X- k; X) v- ^-metre freestyle time improved by 5 seconds between the ages of 15 and 16.
/ o$ @, u' \5 q) i4 f( Y) @+ [% o5 nFor regular people, including Callaway, it may be hard to imagine what an0 S6 x% }" R* t8 ~0 _4 k1 o
elite swimmer can achieve as he or she matures and undergoes scientific and( F* o8 a. k- K" i
persistent training. But jumping to the conclusion that it is “anomalous”
- \- d: c" C4 M% W2 k* Sbased on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.! [; }+ l' ]( W' l
6 F, w3 u" B# A( k4 I( w; k3 s; \Third, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook/ X9 A2 n# x; X
example of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in' C+ I3 x, ^; [2 W
the last 50 metres, but Lochte had a huge lead in the first 300 metres, so
# f, [' k% \0 Y. [' j; c7 k& C f. nhe chose not to push himself too hard and to conserve his energy for later# |' \7 Z3 ]% H3 Z$ E' n
events (whether this conforms to the Olympic spirit and the ‘use one’s
! I7 Y- d- c9 ^best efforts to win a match’ requirement that the Badminton World. r) m7 r9 E4 t
Federation recently invoked to disqualify four badminton pairs is another" T) O* f! g% _" T( }# Y
topic worth discussing, though probably not in Nature). Ye, on the other1 X; A7 d% T' R
hand, was trailing behind after the first 300 metres and relied on freestyle
7 `2 U* p8 x# }" P k, in which she has an edge, to win the race. Failing to mention this9 X. A6 v4 V% x$ ]
strategic difference, as well as the fact that Lochte is 23.25 seconds2 c, x' c1 Y; I+ |
faster (4:05.18) than Ye overall, creates the illusion that a woman swam" g) `& E$ B5 R% `3 c7 c1 y
faster than the best man in the same sport, which sounds impossible. Putting8 G: }# i* f+ K# [9 _; b5 O
aside the gender argument, I believe this is still a leading question that
$ @ p9 W( I+ O6 J! z9 O$ h i. oimplies to the reader that there is something fishy going on.+ F. G* x* ~& W
. e' R+ v9 ~9 B; ]1 r, l& tFourth is another example of cherry-picking. In the same event, there are" q: K4 E. i' ^& E
four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93
/ s. s6 \1 o* b! c4 a7 [s) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s; c B( P! M. I4 X Z
), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns
3 V x" X3 o$ h: K- a% d" f7 Kout, if we are just talking about the last 50 metres in a 400-metre IM,* m( n0 q' B l& [
Lochter is not the example I would have used if I were the author. What kind
& `+ c/ ]$ x3 x7 i* t, X! N9 X$ gof scientific rigorousness is Callaway trying to demonstrate here? Is it
' M# z9 [- e- ] Ulogical that if Lochter is the champion, we should assume that he leads in
) G6 c, `) o% K; c: k6 `every split? That would be a terrible way to teach the public how science
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Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and4 R6 L6 O6 x" X
implies that a drug test cannot rule out the possibility of doping. Is this
; t- k. P$ _- w9 Jkind of agnosticism what Nature really wants to teach its readers? By that9 W; g/ k7 J, y; o3 Q% ]( S
standard, I estimate that at least half of the peer-reviewed scientific
. R% u, r$ e" c. {* K0 Hpapers in Nature should be retracted. How can one convince the editors and
$ B* d+ S8 l. t$ rreviewers that their proposed theory works for every possible case? One
' ]" h L# m8 r; K) Wcannot. One chooses to apply the theory to typical examples and to/ I" g: E2 R, y% Z
demonstrate that in (hopefully) all scenarios considered, the theory works& J" X, J( a+ h* n
to a degree, and that that should warrant publication until a counterexample, k" x" b3 g: g7 a6 F% m# j
is found. I could imagine that Callaway has a sceptical mind, which is
; C/ `( ?: w8 H) S% s; d% k1 N# Hcrucial to scientific thinking, but that would be put to better use if he
; S; _5 ]& p; T/ E( a4 dwrote a peer-reviewed paper that discussed the odds of Ye doping on a highly# W- [ X% |8 f3 S: T' k
advanced, non-detectable drug that the Chinese have come up with in the: V3 r, I4 V, `2 J6 Y3 r- c
past 4 years (they obviously did not have it in Beijing, otherwise why not
, \: R$ c+ a* x1 Ouse it and woo the audience at home?), based on data and rational derivation
5 i# K; m! ^( a0 R" [0 f. This article, however, can be interpreted as saying that all athletes are" `- |' u% ^3 r+ H! V- F, B
doping and the authorities are just not good enough to catch them. That may! K& J1 ~& L7 v' d
be true, logically, but definitely will not make the case if there is ever a. O% Y# @: ^. J# B
hearing by the governing body for water sports, FINA, to determine if Ye
3 O. N" c2 d$ w, u+ {& X3 ^has doped. To ask whether it is possible to obtain a false negative in a
7 \- U! u/ n6 ?2 ~2 fdrug test looks like a rigged question to me. Of course it is possible:
( X# ]7 L3 O6 `9 pother than the athlete taking a drug that the test is not designed to detect
6 a" ]& K# } a, anyone who has taken quantum 101 will tell you that everything is
B {/ a. S, V3 L, o# H: N& Iprobabilistic in nature, and so there is a probability that the drug in an- \8 B5 R i" b
athlete’s system could tunnel out right at the moment of the test. A slight) T# n6 t' y+ j+ G% [; x \
chance it may be, but should we disregard all test results because of it?
8 m3 \' [2 @& S4 J9 ULet’s be practical and reasonable, and accept that the World Anti-Doping
; Z" m8 B: G; a* e1 Cagency (WADA) is competent at its job. Ye’s urine sample will be stored for
- [' ]5 S+ W* {eight years after the contest for future testing as technology advances.
- ?7 u% }1 C! Z4 \- e cInnocent until proven guilty, shouldn’t it be?
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1 Y1 d+ J4 [# u9 {; BSixth, and the last point I would like to make, is that the out-of-
1 j |2 g- s8 U' p; Dcompetition drug test is already in effect, which Callaway failed to mention
2 S" d# k7 f! a. s. As noted in the president of WADA’s press release, drug testing for1 b( U- G, ?7 O! t% t2 j! z0 b
Olympians began at least six months before the opening of the London% d ?4 w9 }6 v3 L2 l
Olympics. Furthermore, 107 athletes have been banned from this Olympics for
& B+ Q: ?$ A8 Y( r) ^1 p' mdoping. That may be the reason that “everyone will pass at the Olympic
, h9 h/ u2 {: G7 A8 tgames. Hardly anyone fails in competition testing” — those who did dope
# A4 D0 v+ ^$ x- u8 }0 Qhave already been caught and sanctioned. Callaway is free to suggest that a8 N8 t& s5 {) g+ _# e
player could have doped beforehand and fooled the test at the game, but this1 b/ h+ m" Z: n: q- @" l
possibility is certainly ruled out for Ye.
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k5 D7 |7 F) O6 q( OOver all, even though Callaway did not falsify any data, he did (# k6 G+ }+ C' ^, B) T4 N
intentionally or not) cherry-pick data that, in my view, are far too
" {5 Y ^ n) ~$ V ~6 P _7 qsuggestive to be fair and unbiased. If you want to cover a story of a
0 q# ~; m0 F1 \0 Z0 l% fsuspected doping from a scientific point of view, be impartial and provide
- s! q# ?( S0 G! eall the facts for the reader to judge. You are entitled to your
" A" U8 ^# h9 p2 u* D4 linterpretation of the facts, and the expression thereof in your piece,
X) C: G+ Q3 b& L s, F5 W0 N, r1 Xexplicitly or otherwise, but showing only evidence that favours your
6 {" ]5 c' G2 x1 E/ W& e- Wargument is hardly good science or journalism. Such an article in a journal
1 Y8 |7 J0 r6 Q6 k- Ksuch as Nature is not an appropriate example of how scientific research or
" k$ c6 O+ f4 ~4 Q$ h8 |; Hreporting should be done. |
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