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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
: h) r3 C0 n' U/ h' j9 h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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0 _, g& z9 L% C& J$ A8 v* w3 Qhttp://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html5 Y0 q! W0 J M4 r! Q* S
3 h q# {/ P9 E! NFROM LAI JIANG, Department of Chemistry, University of Pennsylvania
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+ T* c5 R N9 t8 k5 Z" vIt is a shame to see Nature — which nearly all scientists, including myself
. F& Q/ E" G: K* K U2 h; p, regard as one of the most prestigious and influential physical-science3 F& H) `0 [( w
magazines — publish a thinly veiled biased article like this. Granted, this
( X. _$ C& I' N. l. b7 {+ lis not a peer-reviewed scientific article and did not go through the9 H, w h+ m* k
scrutiny of picking referees. But to serve as a channel for the general
( a4 ^% v9 v' _7 K7 Spopulace to be in touch with and appreciate science, the authors and editors
4 I" h; T$ X |4 ]6 I$ w# s1 Pshould at least present the readers with facts within the proper context,
) {" g6 k0 f& ]8 pwhich they blatantly failed to do.
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, S7 e# ^7 W$ f4 V. U2 N8 HFirst, to identify Ye’s performance increase, Ewen Callaway compared her
& S2 f- f+ E0 o8 p H$ FOlympic 400-metre IM time with her performance at the World Championships in
2 o9 X# D0 R6 q9 S5 t# I2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “1 ]/ G; ~; \, Y' {
anomalous” improvement of around 7 seconds (6.72 s). In fact, her previous
# |$ ~% B/ u; X* d: I& B9 Qpersonal best was 4:33.79 at the Asian Games in 2010. This leads to an, r# O' b1 x' M
improvement of 5.38 seconds. In a sporting event in which 0.1 s can be the1 }- O8 y1 a( `% |: K. O% F" Q. z
difference between the gold and silver medal, I see no reason for 5.38 s to
8 L0 L1 y2 E& v; ?9 obe treated as 7 s./ O5 N) c; e' v8 \
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Second, as previously pointed out, Ye is only 16 years old and her body is
] C1 i2 P3 istill developing. Bettering oneself by 5 seconds over two years may seem
5 r: w! H& e+ Nimpossible for an adult swimmer, but it certainly happens among youngsters.
* j0 B3 k4 ~- u! T6 a; o. mAn interview with Australian gold medallist Ian Thorpe revealed that his 400
: w* s4 A6 F p0 J* |3 {' B-metre freestyle time improved by 5 seconds between the ages of 15 and 16.9 P: ]8 y: B6 o2 c6 r
For regular people, including Callaway, it may be hard to imagine what an+ u; S4 ?7 O; p/ o. [
elite swimmer can achieve as he or she matures and undergoes scientific and
7 y/ o( H m1 _; a5 Npersistent training. But jumping to the conclusion that it is “anomalous”0 {# | N$ o+ e$ R0 \. E
based 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
% a+ w J$ ?/ j. R$ X% G: ?example of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in0 Z+ K; ~: _, q. B) o
the last 50 metres, but Lochte had a huge lead in the first 300 metres, so
6 A9 }" b- `9 h5 O) vhe chose not to push himself too hard and to conserve his energy for later/ U0 X- V' w" i
events (whether this conforms to the Olympic spirit and the ‘use one’s
; k$ b. [( M/ s2 @best efforts to win a match’ requirement that the Badminton World
3 L$ }; V: b" k' kFederation recently invoked to disqualify four badminton pairs is another
/ n0 O: [# @ Z! \; }# S8 z; Ktopic worth discussing, though probably not in Nature). Ye, on the other
0 M2 \* i3 o6 z- Vhand, was trailing behind after the first 300 metres and relied on freestyle* V' t" u; G' ?! O* L" y* }
, in which she has an edge, to win the race. Failing to mention this
# Z1 k- Q7 l# Cstrategic difference, as well as the fact that Lochte is 23.25 seconds& e, m7 v8 g9 [8 H3 m; G; u) J
faster (4:05.18) than Ye overall, creates the illusion that a woman swam4 \1 [9 f" Y9 R1 f: z; d0 g
faster than the best man in the same sport, which sounds impossible. Putting6 G B* B( j( g. [) q9 R
aside the gender argument, I believe this is still a leading question that1 x# N$ {8 l9 [6 m4 R
implies to the reader that there is something fishy going on., l0 J$ M$ i5 s, T* a& j
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Fourth is another example of cherry-picking. In the same event, there are' a3 @- S. N( O$ t% V& D) r- E& x* A# g
four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93
M; ^- q0 ?+ _5 `s) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s
2 Q" @- q- t2 c) z), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns
$ k" u/ y5 r$ |( L# G* q2 C" wout, if we are just talking about the last 50 metres in a 400-metre IM,# V; `9 P5 ^/ h# N& C
Lochter is not the example I would have used if I were the author. What kind
( s- r# C; o% d& G5 r6 Rof scientific rigorousness is Callaway trying to demonstrate here? Is it; x+ }) x" c4 Q. f
logical that if Lochter is the champion, we should assume that he leads in
* M/ O" j& E2 O+ M; Severy split? That would be a terrible way to teach the public how science* H! i, Y7 G8 B4 f; `
works.: E* z2 E: T, u* K3 B
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Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and
5 ] T& U( U, H A0 G4 u- himplies that a drug test cannot rule out the possibility of doping. Is this
7 R7 U6 s, h* ikind of agnosticism what Nature really wants to teach its readers? By that
4 Y& e2 C, G& X7 @ }+ u, astandard, I estimate that at least half of the peer-reviewed scientific4 o' Y9 o% p5 K' P0 Q
papers in Nature should be retracted. How can one convince the editors and( O6 { F- Y2 L8 E
reviewers that their proposed theory works for every possible case? One% Q( \$ N3 W1 `8 U2 o# m
cannot. One chooses to apply the theory to typical examples and to
. i( {/ R y! W( Y' I3 ^) Edemonstrate that in (hopefully) all scenarios considered, the theory works2 ~6 ?! l& f' \1 Z& U
to a degree, and that that should warrant publication until a counterexample2 T( m. L! h6 A. c' M
is found. I could imagine that Callaway has a sceptical mind, which is3 h% f% z- }: Z6 M1 S
crucial to scientific thinking, but that would be put to better use if he6 e, H$ d0 o. B8 c2 ^2 ~! G- [7 R! @: O
wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly1 x7 X/ o5 D3 B- p9 y2 G# u
advanced, non-detectable drug that the Chinese have come up with in the: _, x: C9 |% W, j
past 4 years (they obviously did not have it in Beijing, otherwise why not; X0 b5 @6 \. Z9 T
use it and woo the audience at home?), based on data and rational derivation, l$ w5 O8 K' g! E
. This article, however, can be interpreted as saying that all athletes are% N* Q! i. B" T: {
doping and the authorities are just not good enough to catch them. That may
% y; h) y' f/ _be true, logically, but definitely will not make the case if there is ever a
$ B: }+ W% E/ F7 D# ?+ Zhearing by the governing body for water sports, FINA, to determine if Ye
7 e' D) _3 H/ ?! ]has doped. To ask whether it is possible to obtain a false negative in a0 K9 U( Z5 C" z
drug test looks like a rigged question to me. Of course it is possible:, {1 v$ ~/ L7 S- Z1 x! K8 |- c
other than the athlete taking a drug that the test is not designed to detect
% p0 g8 ~5 K; ^8 @& Y3 K. W, anyone who has taken quantum 101 will tell you that everything is
8 X' P/ i2 Y% ?1 b9 M9 Uprobabilistic in nature, and so there is a probability that the drug in an8 b. V; a% M9 _1 S9 f
athlete’s system could tunnel out right at the moment of the test. A slight
. C% ?* r5 L ichance it may be, but should we disregard all test results because of it?
2 E l. P, v, k1 SLet’s be practical and reasonable, and accept that the World Anti-Doping; d% X! T: ]! d6 S0 m
agency (WADA) is competent at its job. Ye’s urine sample will be stored for7 N. p4 O+ D4 |, g, @& s3 ^. |" Q: {
eight years after the contest for future testing as technology advances.; L. O9 `9 `% e! d' T" f" J( ^
Innocent until proven guilty, shouldn’t it be?
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Sixth, and the last point I would like to make, is that the out-of-2 E7 _; R. x% i7 u2 f& v
competition drug test is already in effect, which Callaway failed to mention2 K6 Q0 _1 ?0 ^% T: Y9 I
. As noted in the president of WADA’s press release, drug testing for
* N7 a, }/ E, N! ]1 a0 F0 mOlympians began at least six months before the opening of the London
1 e. R r$ v& ~$ _; Q! |Olympics. Furthermore, 107 athletes have been banned from this Olympics for
7 t' X ~4 x1 x. q8 n) }doping. That may be the reason that “everyone will pass at the Olympic b/ Y3 R* A' O# I6 x% a
games. Hardly anyone fails in competition testing” — those who did dope9 h& Z1 g" F. w/ Z( i9 Z5 b3 G
have already been caught and sanctioned. Callaway is free to suggest that a
: z! h; d' i3 Q/ Iplayer could have doped beforehand and fooled the test at the game, but this0 i. l& c! s: v
possibility is certainly ruled out for Ye.2 L6 z8 ?- P2 ]$ @ Q2 j
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Over all, even though Callaway did not falsify any data, he did (3 ^, y1 l# I1 b i; x
intentionally or not) cherry-pick data that, in my view, are far too
1 \9 _ R; {, a6 e A6 o2 o1 ^+ \suggestive to be fair and unbiased. If you want to cover a story of a
, r I. ~' p1 }8 x6 i( E0 Osuspected doping from a scientific point of view, be impartial and provide E% E1 W- y1 H
all the facts for the reader to judge. You are entitled to your
; A! w8 N& ?1 O: x/ Minterpretation of the facts, and the expression thereof in your piece,+ E8 [; q) O& @" i6 d
explicitly or otherwise, but showing only evidence that favours your
; k; k. Y. I- o* g" T0 Oargument is hardly good science or journalism. Such an article in a journal! M: A/ x1 r, F1 b- E' b
such as Nature is not an appropriate example of how scientific research or
& e* F/ [$ R/ sreporting should be done. |
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