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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
6 Q" t" x, j) Y9 K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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9 {) `2 F+ B+ \' y; i0 ]http://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html
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FROM LAI JIANG, Department of Chemistry, University of Pennsylvania% R' F$ }, J* {: { v+ G5 f
) j8 w3 @% ^* K* q& y/ `" h" \+ eIt is a shame to see Nature — which nearly all scientists, including myself
+ k- v6 d' Q; \0 S, regard as one of the most prestigious and influential physical-science
2 W1 M! q$ z3 b% I2 qmagazines — publish a thinly veiled biased article like this. Granted, this
+ L- a) M& q3 b5 Sis not a peer-reviewed scientific article and did not go through the6 @7 E5 H$ a9 Y3 D% `9 o* U) e3 n
scrutiny of picking referees. But to serve as a channel for the general. R; r2 X% Y2 r+ w
populace to be in touch with and appreciate science, the authors and editors
; t: j! q6 T: Y2 L$ v1 |5 Yshould at least present the readers with facts within the proper context,, Q; L& j# T5 a& u
which they blatantly failed to do.5 F& O5 M) p4 ~6 W4 e2 E
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First, to identify Ye’s performance increase, Ewen Callaway compared her' v, S# [/ C& {1 B
Olympic 400-metre IM time with her performance at the World Championships in) Y+ f) s2 Z: W
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “% [; _; ~# J; ^+ P0 O2 }/ |
anomalous” improvement of around 7 seconds (6.72 s). In fact, her previous
; ~: n1 B; {" {* P: Rpersonal best was 4:33.79 at the Asian Games in 2010. This leads to an
3 D% j( f: _/ G7 A( _. T% mimprovement of 5.38 seconds. In a sporting event in which 0.1 s can be the
. Q, \+ T( x( Q; m* n" Zdifference between the gold and silver medal, I see no reason for 5.38 s to: c& B. G, D$ H& k' x2 w' a& R* L
be treated as 7 s.
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Second, as previously pointed out, Ye is only 16 years old and her body is8 } X, ]$ d4 n |8 w9 v
still developing. Bettering oneself by 5 seconds over two years may seem
! X( H8 A* s9 P/ d5 H$ D' fimpossible for an adult swimmer, but it certainly happens among youngsters.4 @+ `+ v, [2 a3 `+ ?) y9 p
An interview with Australian gold medallist Ian Thorpe revealed that his 4008 h" p+ [; ~! ~9 Y& I% ?
-metre freestyle time improved by 5 seconds between the ages of 15 and 16.; v: \2 F) S/ N: o/ O& ?8 y) \
For regular people, including Callaway, it may be hard to imagine what an" @0 t b# ~. g1 e: ?0 ~, b
elite swimmer can achieve as he or she matures and undergoes scientific and
6 ]5 k5 V/ ]- Y$ r1 ipersistent training. But jumping to the conclusion that it is “anomalous”
' Q% X( J( y7 }! D( {, o1 R$ @based on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.
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% S0 t8 j5 l' i* {0 c6 m" R: Q. KThird, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook
/ S) h+ ?6 q- `example of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in
8 a+ g# V2 f0 s! E1 Hthe last 50 metres, but Lochte had a huge lead in the first 300 metres, so+ Z. M( c W* X) @! {6 g: P' W
he chose not to push himself too hard and to conserve his energy for later
4 C6 o% a5 P& ^, Z" h; C7 \events (whether this conforms to the Olympic spirit and the ‘use one’s3 m: [5 h8 A; V( L3 p6 h* a+ A
best efforts to win a match’ requirement that the Badminton World
8 D+ W0 d% T* v# j. r9 Q2 C1 JFederation recently invoked to disqualify four badminton pairs is another
- l: z! N- N, F& E) p7 J- a% atopic worth discussing, though probably not in Nature). Ye, on the other5 _' G b; l: m1 s! I3 z
hand, was trailing behind after the first 300 metres and relied on freestyle1 ~ j8 {) p% N, h- F x* x- n7 [7 z
, in which she has an edge, to win the race. Failing to mention this* i( A( J& V* h& i0 O9 f, R0 d
strategic difference, as well as the fact that Lochte is 23.25 seconds) }' \( a8 ^, v& C8 I' G
faster (4:05.18) than Ye overall, creates the illusion that a woman swam$ m+ p: p( B1 O4 {
faster than the best man in the same sport, which sounds impossible. Putting
- b0 t# A* N; H8 F1 _aside the gender argument, I believe this is still a leading question that6 [3 H, w4 b0 U
implies to the reader that there is something fishy going on.
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- K3 t, G' x; P/ sFourth is another example of cherry-picking. In the same event, there are. k9 w1 I7 b5 d) W L" L. o0 A
four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93
, I0 a5 L9 Y% Ds) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s% a9 |& y8 C. Q
), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns
5 x: t3 Z& _( e9 ]out, if we are just talking about the last 50 metres in a 400-metre IM,, B7 O. y/ Y# V1 q; N
Lochter is not the example I would have used if I were the author. What kind
2 g" l9 v& P( Z, V7 ?: pof scientific rigorousness is Callaway trying to demonstrate here? Is it7 H- ^/ W1 c& q* H0 k6 }
logical that if Lochter is the champion, we should assume that he leads in
# l# p# J5 X0 Q: G8 I3 n; B$ severy split? That would be a terrible way to teach the public how science9 m0 V8 O/ t ?! F* @9 \
works.
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Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and! c! N" a# g5 R: Y/ ^7 h+ y+ J
implies that a drug test cannot rule out the possibility of doping. Is this) G% S+ N' |2 Y: ]' N! q2 R
kind of agnosticism what Nature really wants to teach its readers? By that, H2 R# |( |. g1 w: l X
standard, I estimate that at least half of the peer-reviewed scientific) D* S$ b/ I. P- O0 g# j
papers in Nature should be retracted. How can one convince the editors and
* S3 N+ E. t5 M' E8 ?% ^3 N& N" [reviewers that their proposed theory works for every possible case? One# |7 Z# ^1 o5 O* ^
cannot. One chooses to apply the theory to typical examples and to
+ t2 y/ M0 H! F+ Y% E9 B" s, ~demonstrate that in (hopefully) all scenarios considered, the theory works
6 W! z! W1 c. C9 j) l0 f6 B- Lto a degree, and that that should warrant publication until a counterexample
?& z) ?5 j2 U9 W2 Yis found. I could imagine that Callaway has a sceptical mind, which is; G4 l! O/ F e% i
crucial to scientific thinking, but that would be put to better use if he5 j. U F/ q9 I8 V
wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly" f* E0 C- c0 I. o: m1 I* E q7 _
advanced, non-detectable drug that the Chinese have come up with in the. z; u' Y, t; k. A
past 4 years (they obviously did not have it in Beijing, otherwise why not- L$ w1 i6 a: l, g8 ]
use it and woo the audience at home?), based on data and rational derivation# N# S# H5 R; M! p+ i: J2 a
. This article, however, can be interpreted as saying that all athletes are
- Z/ n, e1 z* `7 m/ R7 idoping and the authorities are just not good enough to catch them. That may8 ~2 s5 @- [) T1 H5 \9 A$ B
be true, logically, but definitely will not make the case if there is ever a
+ z( s) q8 l# q8 Z% G9 N9 Yhearing by the governing body for water sports, FINA, to determine if Ye4 C* ?; l9 }5 D o# E
has doped. To ask whether it is possible to obtain a false negative in a6 G j( G# L0 g" E9 Z2 u" O( {5 v
drug test looks like a rigged question to me. Of course it is possible:
# P& o" j' A. R/ w2 e% E; U( i8 }other than the athlete taking a drug that the test is not designed to detect0 u+ w9 Y5 ]4 D8 [) S
, anyone who has taken quantum 101 will tell you that everything is! r. u8 {2 t# h9 G# X% x% |1 m
probabilistic in nature, and so there is a probability that the drug in an
0 c5 _1 q: @5 n9 uathlete’s system could tunnel out right at the moment of the test. A slight
6 B$ H5 }0 I C1 L3 ?" ochance it may be, but should we disregard all test results because of it?9 G7 H7 h* x0 u, k
Let’s be practical and reasonable, and accept that the World Anti-Doping5 Q) F+ B1 H9 ]# u( n! Q
agency (WADA) is competent at its job. Ye’s urine sample will be stored for4 e: ~) ~" Y& e) j
eight years after the contest for future testing as technology advances.
0 G8 M9 s0 u9 T9 a# w- \2 qInnocent until proven guilty, shouldn’t it be?
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w" x0 G6 l9 x3 bSixth, and the last point I would like to make, is that the out-of-9 s( [5 x$ W' u& {$ ~4 _: S
competition drug test is already in effect, which Callaway failed to mention+ z# _% I( d: f! c( d
. As noted in the president of WADA’s press release, drug testing for& n3 F7 K4 {. [
Olympians began at least six months before the opening of the London
1 R& c: L. O/ |Olympics. Furthermore, 107 athletes have been banned from this Olympics for/ A) q3 H% x; m& S( m5 ~9 g/ }
doping. That may be the reason that “everyone will pass at the Olympic
, H d. ] P3 G$ ygames. Hardly anyone fails in competition testing” — those who did dope# b5 D% G% t% X% I
have already been caught and sanctioned. Callaway is free to suggest that a
3 c& L) S6 `" H% k4 ^' Aplayer could have doped beforehand and fooled the test at the game, but this
# u9 A( A3 u8 Bpossibility is certainly ruled out for Ye.
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Over all, even though Callaway did not falsify any data, he did (
- O& u, F& b% lintentionally or not) cherry-pick data that, in my view, are far too+ D5 Q; Z' Y4 |+ T% h
suggestive to be fair and unbiased. If you want to cover a story of a
9 F3 m7 |0 [1 J& g& g# f# osuspected doping from a scientific point of view, be impartial and provide) M# n( _9 A9 F; a. Y& N0 ]
all the facts for the reader to judge. You are entitled to your
& s: L" w# V! P8 G3 t: _interpretation of the facts, and the expression thereof in your piece,
- D8 {8 [0 a e4 p9 w1 Hexplicitly or otherwise, but showing only evidence that favours your
/ I9 g5 ]8 G( K/ h4 @9 rargument is hardly good science or journalism. Such an article in a journal: i' |6 Z& |" v& J. D: ~* @
such as Nature is not an appropriate example of how scientific research or" q" H& \; C1 C9 E* H4 ?7 J
reporting should be done. |
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