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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
! Y6 q; @9 }6 d: |0 q如果是中国长大的,英语能到这种程度真是很不简单。6 k+ `$ x$ D9 n: @( J8 g1 D
8 H2 W( B7 z5 p0 C! Shttp://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html
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; T x2 j. P0 g# U" ]* aFROM LAI JIANG, Department of Chemistry, University of Pennsylvania! {2 p3 l' h+ g5 ]; v) b
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It is a shame to see Nature — which nearly all scientists, including myself
: m8 ]8 u2 W# s3 S1 F/ K0 m% W, regard as one of the most prestigious and influential physical-science
9 v7 _! y! W# T/ zmagazines — publish a thinly veiled biased article like this. Granted, this% F) e: q* O1 K5 P6 a" E
is not a peer-reviewed scientific article and did not go through the, T8 i% e2 ^, p u
scrutiny of picking referees. But to serve as a channel for the general, U+ Z+ d( I/ |
populace to be in touch with and appreciate science, the authors and editors4 ^. a$ K: @4 a
should at least present the readers with facts within the proper context,2 r" Y* p6 E! U* e
which they blatantly failed to do./ Y1 } t- i y; w2 @1 A
2 u4 S( Q8 J% h/ M$ UFirst, to identify Ye’s performance increase, Ewen Callaway compared her; t+ f$ x' X/ J9 y
Olympic 400-metre IM time with her performance at the World Championships in% z8 \3 v4 w$ ^8 T5 }
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “3 A! x8 _; Z& [2 Q9 G8 f
anomalous” improvement of around 7 seconds (6.72 s). In fact, her previous
5 L. S. T. @6 {/ K! J R. m1 _personal best was 4:33.79 at the Asian Games in 2010. This leads to an
. G, C- e$ Y' v) F0 Yimprovement of 5.38 seconds. In a sporting event in which 0.1 s can be the5 K$ G( z! `6 ]7 ^6 O
difference between the gold and silver medal, I see no reason for 5.38 s to$ _- [, {3 k. W: A D
be treated as 7 s.
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+ Q2 D& }9 B9 j7 J" xSecond, as previously pointed out, Ye is only 16 years old and her body is5 y& o& j8 W9 P4 @" {
still developing. Bettering oneself by 5 seconds over two years may seem- }0 R+ s$ M9 J' P: E
impossible for an adult swimmer, but it certainly happens among youngsters.# u5 M0 T# ]1 M- f) E) ^7 e2 O
An interview with Australian gold medallist Ian Thorpe revealed that his 4005 y, d$ @* H0 f; G4 n$ }
-metre freestyle time improved by 5 seconds between the ages of 15 and 16.
* Z$ @5 X3 u! l% {5 w) H9 oFor regular people, including Callaway, it may be hard to imagine what an7 K6 q# B, b2 e& S
elite swimmer can achieve as he or she matures and undergoes scientific and
8 X# u0 m9 h( h5 Fpersistent training. But jumping to the conclusion that it is “anomalous”
# g' z2 [& W: ]8 u3 lbased on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.
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6 {- e" W' s& \: c! [Third, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook
( C6 j/ ?9 B8 ? f+ p* J, h, _example of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in; m2 K% B+ V4 f2 @4 @5 w+ R
the last 50 metres, but Lochte had a huge lead in the first 300 metres, so
+ R7 x2 r% N" }. G& Ohe chose not to push himself too hard and to conserve his energy for later
) Y6 C0 W4 x) l! ^events (whether this conforms to the Olympic spirit and the ‘use one’s
+ a5 {7 h9 }) u7 B' I* b# Zbest efforts to win a match’ requirement that the Badminton World0 T8 Z2 \0 Q' P! V+ s
Federation recently invoked to disqualify four badminton pairs is another
& X8 C# z4 v4 p( C1 _topic worth discussing, though probably not in Nature). Ye, on the other
; q$ ]6 O3 E+ x- e8 {" w0 _hand, was trailing behind after the first 300 metres and relied on freestyle
5 U7 v8 E- w/ U! f1 e# B, in which she has an edge, to win the race. Failing to mention this
8 J$ Q- H0 J$ ?2 u! v4 gstrategic difference, as well as the fact that Lochte is 23.25 seconds/ B' b' A2 V3 d; r1 o
faster (4:05.18) than Ye overall, creates the illusion that a woman swam
* N% [6 s# O$ c0 Y7 k6 Z' |faster than the best man in the same sport, which sounds impossible. Putting
5 p3 |6 Y2 K9 Q" `& B! {aside the gender argument, I believe this is still a leading question that
+ E, o3 O* N; z- c) l; V6 simplies to the reader that there is something fishy going on.9 w% P: z' z$ m" F7 x
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Fourth is another example of cherry-picking. In the same event, there are
$ ~. D! { X) e: ^four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93) ~5 ], r+ a# l* q
s) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s, s4 o( b# j. N6 o2 ~5 ~- Z1 I
), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns/ t8 S2 k( F% n/ A! ?& C8 |/ L; {
out, if we are just talking about the last 50 metres in a 400-metre IM,
; T$ m6 s$ @' M/ qLochter is not the example I would have used if I were the author. What kind+ u" j7 n: A: H. V
of scientific rigorousness is Callaway trying to demonstrate here? Is it O: v7 R) ^% r9 g$ H
logical that if Lochter is the champion, we should assume that he leads in2 W8 G" j3 ]7 f6 a* v4 t
every split? That would be a terrible way to teach the public how science
: w9 i9 D" N9 D6 H" c5 Oworks.
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+ P5 x8 \" V; ~ W. z- tFifth is the issue I oppose the most. Callaway quotes Ross Tucker and
! u% m6 @! I( M. a! nimplies that a drug test cannot rule out the possibility of doping. Is this" h( i! S4 n1 s
kind of agnosticism what Nature really wants to teach its readers? By that
7 P M7 M% ]! L! O% Q( Astandard, I estimate that at least half of the peer-reviewed scientific% H5 i9 V% F* z4 ^0 _/ X# O
papers in Nature should be retracted. How can one convince the editors and
" a/ w# B `; r1 a, i, Zreviewers that their proposed theory works for every possible case? One
9 a. f4 s3 S; ?9 c8 lcannot. One chooses to apply the theory to typical examples and to
( b9 S0 _8 _$ b, y9 e1 Gdemonstrate that in (hopefully) all scenarios considered, the theory works
f8 q, x, u& T+ Y/ K" O3 S* Pto a degree, and that that should warrant publication until a counterexample
5 b2 W; w7 F# s7 l% I7 Y- |$ u5 q" ]is found. I could imagine that Callaway has a sceptical mind, which is
$ u, y) V8 w J/ b6 a; S$ Gcrucial to scientific thinking, but that would be put to better use if he
% i1 A' T- g/ a, t3 v1 u; ]5 ]wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly0 i/ i7 c$ Y% L5 [# ~
advanced, non-detectable drug that the Chinese have come up with in the
2 Z! u) S3 e3 K2 O8 Xpast 4 years (they obviously did not have it in Beijing, otherwise why not
- m, H& \# g0 u1 O/ buse it and woo the audience at home?), based on data and rational derivation% d: r* j1 h w' X3 } m$ W
. This article, however, can be interpreted as saying that all athletes are! q% r5 h( R/ `4 i
doping and the authorities are just not good enough to catch them. That may
/ b' G4 V! r0 [! _# _% Z8 hbe true, logically, but definitely will not make the case if there is ever a: v+ q4 D" z7 y' m# r; v* [
hearing by the governing body for water sports, FINA, to determine if Ye
* O( o: o9 ]* Y" v' |has doped. To ask whether it is possible to obtain a false negative in a
; M7 _% E; w! _9 W: X& idrug test looks like a rigged question to me. Of course it is possible:
2 a) ?9 h; r+ g5 ]9 P3 pother than the athlete taking a drug that the test is not designed to detect) W; x* g7 e2 E2 U
, anyone who has taken quantum 101 will tell you that everything is
) ]; n$ ]: N$ X1 u6 r0 Q& |probabilistic in nature, and so there is a probability that the drug in an: E6 U1 M! }+ g; W: z
athlete’s system could tunnel out right at the moment of the test. A slight- b$ {' z$ D+ T4 D+ q: Z2 x) Q3 a. T
chance it may be, but should we disregard all test results because of it?: [, a& \; Z2 U I* S4 L' A/ W$ L
Let’s be practical and reasonable, and accept that the World Anti-Doping
4 r; B$ P3 ~; C3 X# Ragency (WADA) is competent at its job. Ye’s urine sample will be stored for6 ~% O" C; v1 ]! Z
eight years after the contest for future testing as technology advances.
8 S) ]( h( v, ~" {Innocent until proven guilty, shouldn’t it be?6 k* O# O$ l4 W8 g
0 a! w% R( p# G; T7 Y6 U# dSixth, and the last point I would like to make, is that the out-of-
: Q& R. X) o+ Q- d- o4 b% c0 y+ M: V3 ?competition drug test is already in effect, which Callaway failed to mention( g) P1 U- F/ d0 j" W- P: P
. As noted in the president of WADA’s press release, drug testing for6 ]1 o3 N# \4 g1 n$ N3 E
Olympians began at least six months before the opening of the London
9 X) z0 k4 m& P& B( I0 WOlympics. Furthermore, 107 athletes have been banned from this Olympics for
0 h5 ` Q6 ^+ l- m% V6 m7 Qdoping. That may be the reason that “everyone will pass at the Olympic, _' V3 \' L, B; l6 d+ U6 K) e% q
games. Hardly anyone fails in competition testing” — those who did dope8 Z+ _0 p1 v' U, [* z- @
have already been caught and sanctioned. Callaway is free to suggest that a
, \, K9 a# s, L. J, Pplayer could have doped beforehand and fooled the test at the game, but this; \9 F2 y: g6 V' m
possibility is certainly ruled out for Ye.
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* F h; s( ?# {) W: T$ M$ vOver all, even though Callaway did not falsify any data, he did (
6 J W2 [& |' G9 [/ m* Ointentionally or not) cherry-pick data that, in my view, are far too
- L" B+ M. [ e5 P- k0 Msuggestive to be fair and unbiased. If you want to cover a story of a8 f+ j! t9 ~1 A9 g; H! K
suspected doping from a scientific point of view, be impartial and provide
- V" I, _! W- Uall the facts for the reader to judge. You are entitled to your* F( E+ `% e5 c9 z' i d, F' y% n
interpretation of the facts, and the expression thereof in your piece,
# y! p# k, F2 X# r+ mexplicitly or otherwise, but showing only evidence that favours your
4 m8 Q' m& P7 [! i+ }argument is hardly good science or journalism. Such an article in a journal
1 H, l; x4 N) ~7 Dsuch as Nature is not an appropriate example of how scientific research or) d0 n9 r- v+ A8 c" l( e
reporting should be done. |
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