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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
# E2 r& V1 q) T3 ~如果是中国长大的,英语能到这种程度真是很不简单。% A8 g. Q, d" g# `$ J
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http://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html2 D6 k# q1 K# D7 |7 q5 ?7 o _
/ r% K& _" w# h& D- WFROM LAI JIANG, Department of Chemistry, University of Pennsylvania: I- v2 {2 e* o P
. @* Q/ V0 L# k- D/ QIt is a shame to see Nature — which nearly all scientists, including myself$ H4 A, e! I* P9 U, r6 ~8 J
, regard as one of the most prestigious and influential physical-science6 e5 |. u' X* V* \
magazines — publish a thinly veiled biased article like this. Granted, this" N5 U- W3 m6 s5 D
is not a peer-reviewed scientific article and did not go through the, o3 q& X: D( O9 ^5 U
scrutiny of picking referees. But to serve as a channel for the general
3 a* B6 M# J/ r4 q$ g0 G9 Spopulace to be in touch with and appreciate science, the authors and editors$ F9 n7 v7 }2 P% A- C% r5 @7 Z" L3 E
should at least present the readers with facts within the proper context,
* p5 P- N4 \. \$ l0 K+ Kwhich they blatantly failed to do.* s8 h/ c9 E" f& i4 v$ t
, a5 q+ r2 J$ v& r5 FFirst, to identify Ye’s performance increase, Ewen Callaway compared her6 B8 Z: I7 c/ s, K% ?2 f
Olympic 400-metre IM time with her performance at the World Championships in
- `0 e/ S; W+ V8 F2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “# r% T3 z/ @/ A
anomalous” improvement of around 7 seconds (6.72 s). In fact, her previous
. b6 M: R; w. `7 i5 Z. U* Z7 V* Fpersonal best was 4:33.79 at the Asian Games in 2010. This leads to an
$ k! `9 g' K+ h* n& W. Rimprovement of 5.38 seconds. In a sporting event in which 0.1 s can be the1 A# d/ W' u+ Y# e0 n5 Z1 r3 ]: E
difference between the gold and silver medal, I see no reason for 5.38 s to
4 _, |: V, F' T+ ~+ `be treated as 7 s. C8 i, c* M( `& g: j1 |; P
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Second, as previously pointed out, Ye is only 16 years old and her body is
% E* A" F0 `4 Z U2 p. I" r; P+ Xstill developing. Bettering oneself by 5 seconds over two years may seem9 W8 ~' R7 e# A) Y
impossible for an adult swimmer, but it certainly happens among youngsters.
l# S1 x/ L; L# \5 n% l3 uAn interview with Australian gold medallist Ian Thorpe revealed that his 400
1 I- L4 l$ P2 q8 h' L! E-metre freestyle time improved by 5 seconds between the ages of 15 and 16." M$ [7 }# F$ o4 C- e
For regular people, including Callaway, it may be hard to imagine what an
5 W, d- f! ?, [9 @; t% N( H5 R1 j" Xelite swimmer can achieve as he or she matures and undergoes scientific and
3 @4 J u. Z/ D* `9 ]. w! Jpersistent training. But jumping to the conclusion that it is “anomalous”' T. a; t4 L) K7 _
based on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.1 r9 V: Y7 j3 T
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Third, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook
9 e) E. G$ i+ p; g% h0 |* b' vexample of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in
/ ]+ G- M6 H" l' B+ b/ }; m4 [the last 50 metres, but Lochte had a huge lead in the first 300 metres, so
. R4 z* R' M) F l' u4 i( Yhe chose not to push himself too hard and to conserve his energy for later8 v4 }. ]: E* ]6 P
events (whether this conforms to the Olympic spirit and the ‘use one’s5 U# V# c# F7 h" ]. e+ Y
best efforts to win a match’ requirement that the Badminton World
# O% Y6 _0 B1 C: c' B# }Federation recently invoked to disqualify four badminton pairs is another
: N" h! h5 s. G) Wtopic worth discussing, though probably not in Nature). Ye, on the other% \7 I& [! t# G3 \, O
hand, was trailing behind after the first 300 metres and relied on freestyle1 P1 X' `3 p2 B9 B' F3 l) B* H
, in which she has an edge, to win the race. Failing to mention this: O" e& ]2 Y0 @1 I8 o
strategic difference, as well as the fact that Lochte is 23.25 seconds3 J2 P' ^3 E$ }* x8 Q! p+ ]
faster (4:05.18) than Ye overall, creates the illusion that a woman swam
% ^' S( R2 J+ V" U2 A% a* l5 ~( Hfaster than the best man in the same sport, which sounds impossible. Putting9 T- r9 v; M9 F$ h* L& K
aside the gender argument, I believe this is still a leading question that2 q* D: H& l$ Z% ~$ w3 d) ]
implies to the reader that there is something fishy going on.
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: e+ p, V p5 gFourth is another example of cherry-picking. In the same event, there are
/ r) B U- R4 G1 ~+ h& _* m% @; H; Qfour male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93
& \$ C" _6 Q* b* v1 zs) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s
, q2 ^$ U9 n5 z% E), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns* P; K/ F, i. Y
out, if we are just talking about the last 50 metres in a 400-metre IM,
4 _# |& E- T1 _) b& s3 GLochter is not the example I would have used if I were the author. What kind
3 J- b4 w3 R" v& `. Eof scientific rigorousness is Callaway trying to demonstrate here? Is it5 N6 S' N1 ?$ r; G0 f" L4 W
logical that if Lochter is the champion, we should assume that he leads in
" C2 Y* a. f7 L9 _every split? That would be a terrible way to teach the public how science9 M4 w! ?9 z. G- ]3 t' J! G
works.
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Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and! x( n$ G" \/ ~3 e1 Y' z* X( H
implies that a drug test cannot rule out the possibility of doping. Is this+ |; `0 U1 X* r* d' B7 v; x' }2 R
kind of agnosticism what Nature really wants to teach its readers? By that6 U$ `5 C) ^4 N! A# `% K
standard, I estimate that at least half of the peer-reviewed scientific
- ]/ g& o# ?3 O' ~) [" s9 Qpapers in Nature should be retracted. How can one convince the editors and
: r, f) \# k1 f2 j* {. m. Y- Rreviewers that their proposed theory works for every possible case? One
; _9 s! E) X6 U0 m( }- tcannot. One chooses to apply the theory to typical examples and to
- U4 e5 \8 ^& U; B2 u7 idemonstrate that in (hopefully) all scenarios considered, the theory works: K7 b5 D4 z( Q5 V
to a degree, and that that should warrant publication until a counterexample* W; e2 Z: \! g- g" M4 r# m
is found. I could imagine that Callaway has a sceptical mind, which is4 {: [$ C7 N" L! I! ^
crucial to scientific thinking, but that would be put to better use if he$ T) ~( H+ ?* P; @0 n1 H
wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly
1 l. q' e& t! V. c, z" Aadvanced, non-detectable drug that the Chinese have come up with in the: n% l* a% f3 A C9 g
past 4 years (they obviously did not have it in Beijing, otherwise why not
: F/ R4 E1 ^) l0 g/ h9 I; \5 nuse it and woo the audience at home?), based on data and rational derivation
3 x4 ]$ e* f. [, ]9 i3 T' U. This article, however, can be interpreted as saying that all athletes are
0 G& p2 ?* c0 ^5 Fdoping and the authorities are just not good enough to catch them. That may9 M) @5 w5 A) g, ^4 I r" P
be true, logically, but definitely will not make the case if there is ever a+ Q9 r6 a! j/ t. W
hearing by the governing body for water sports, FINA, to determine if Ye9 f& i( `! A* p! {
has doped. To ask whether it is possible to obtain a false negative in a- D9 b3 @/ ]4 N( U* {+ x8 f5 v/ I, Y
drug test looks like a rigged question to me. Of course it is possible:5 c3 F5 ~( s4 \# q
other than the athlete taking a drug that the test is not designed to detect. C4 v7 a% K6 p8 H4 b
, anyone who has taken quantum 101 will tell you that everything is# W' h! W9 q) \2 [ K- s2 ^
probabilistic in nature, and so there is a probability that the drug in an# ?* `& U- @# ~" _4 {
athlete’s system could tunnel out right at the moment of the test. A slight( P* e: U) G/ |7 `$ y: u/ [
chance it may be, but should we disregard all test results because of it?, H l! H& Z5 }$ A! [+ n
Let’s be practical and reasonable, and accept that the World Anti-Doping
4 m# b" @: B1 Y- r2 k) ?agency (WADA) is competent at its job. Ye’s urine sample will be stored for5 S7 @$ \- T, M5 I+ [
eight years after the contest for future testing as technology advances.4 R" r4 x( S- A7 J+ j. h
Innocent until proven guilty, shouldn’t it be?
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7 P) ^- u/ U5 A9 W. U+ y$ s' h9 _Sixth, and the last point I would like to make, is that the out-of-4 z8 b& x) c! k" g( k% n
competition drug test is already in effect, which Callaway failed to mention; q- f3 t' R2 P: I
. As noted in the president of WADA’s press release, drug testing for) Z% J9 H5 l4 }5 x; S9 y, D
Olympians began at least six months before the opening of the London
$ a- p: N8 O% N- l/ w$ n: LOlympics. Furthermore, 107 athletes have been banned from this Olympics for7 O) n' @+ r8 l0 N1 m3 p) c2 ?
doping. That may be the reason that “everyone will pass at the Olympic
9 Y) ?4 a9 N7 y5 s; D2 K+ c& lgames. Hardly anyone fails in competition testing” — those who did dope9 b, t; `0 i) [) G; J1 ]) h6 c. ]. Q
have already been caught and sanctioned. Callaway is free to suggest that a3 o j9 R' S9 ]0 b7 N
player could have doped beforehand and fooled the test at the game, but this
6 a& e2 R. N3 d$ O# mpossibility is certainly ruled out for Ye.
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& N Q7 N8 P2 [* H( y7 ?. [Over all, even though Callaway did not falsify any data, he did (
3 e4 U; d" a7 X" [+ tintentionally or not) cherry-pick data that, in my view, are far too; r3 W. N F, i+ {
suggestive to be fair and unbiased. If you want to cover a story of a
2 U4 q! M& J6 Q9 R$ M1 Y9 ~* Asuspected doping from a scientific point of view, be impartial and provide
; }, @1 J8 {: W/ ~8 Z5 Tall the facts for the reader to judge. You are entitled to your5 [8 q. q5 `, \* [/ o
interpretation of the facts, and the expression thereof in your piece,0 R3 }" c' c) t7 W6 @
explicitly or otherwise, but showing only evidence that favours your
* M& G4 V4 G8 p# ]( S5 y6 Hargument is hardly good science or journalism. Such an article in a journal
, c$ |2 Q$ v& V% `* nsuch as Nature is not an appropriate example of how scientific research or& e C' X2 T: Z- [- y, P) g
reporting should be done. |
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