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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. f9 d" _3 J" [' Q( Y
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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http://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html) ^* p& P4 n2 C7 k) d- e- ^
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FROM LAI JIANG, Department of Chemistry, University of Pennsylvania. {2 V: ^2 F1 ?. Y
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It is a shame to see Nature — which nearly all scientists, including myself
! p7 y k' ?7 y2 J, regard as one of the most prestigious and influential physical-science( G. S ]+ S4 q3 c7 p/ S6 i* F' U
magazines — publish a thinly veiled biased article like this. Granted, this
- r1 ]$ \& N6 x2 b/ fis not a peer-reviewed scientific article and did not go through the! C/ W' N0 ?6 [% D1 h- Y9 T
scrutiny of picking referees. But to serve as a channel for the general: _" {4 @9 P @" }9 W; k$ D3 ?" ?
populace to be in touch with and appreciate science, the authors and editors
I! Z! A7 O0 s' P" i# p1 Dshould at least present the readers with facts within the proper context,
& j, H0 ]0 I6 ?2 V8 G8 {* j) ~0 `- Wwhich they blatantly failed to do.
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* H; t$ o5 i6 T u' ZFirst, to identify Ye’s performance increase, Ewen Callaway compared her* _/ W! U( b* R$ a$ T K; y3 V
Olympic 400-metre IM time with her performance at the World Championships in
0 H, a& _' G. u6 r. v- a2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “! g; \9 A- Q% h& g3 R8 G) m6 s
anomalous” improvement of around 7 seconds (6.72 s). In fact, her previous$ e9 \3 r1 X# J- B& a; r0 x9 {: H
personal best was 4:33.79 at the Asian Games in 2010. This leads to an
9 a4 I, h8 u9 g+ G5 S7 i2 v3 eimprovement of 5.38 seconds. In a sporting event in which 0.1 s can be the
# {8 M# N3 r7 k. {6 vdifference between the gold and silver medal, I see no reason for 5.38 s to
- n; l. g; R: D$ Obe treated as 7 s.
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Second, as previously pointed out, Ye is only 16 years old and her body is
0 H4 n9 p# o$ ~1 p. nstill developing. Bettering oneself by 5 seconds over two years may seem( t. k' L# j/ P
impossible for an adult swimmer, but it certainly happens among youngsters.$ a1 B8 S& I0 z5 b- q
An interview with Australian gold medallist Ian Thorpe revealed that his 400
7 ^* { m# b7 T; @6 z5 F C' ]$ k& j! m-metre freestyle time improved by 5 seconds between the ages of 15 and 16.
2 n6 b* v6 b( pFor regular people, including Callaway, it may be hard to imagine what an5 d9 ^0 b5 d# f6 g1 Q
elite swimmer can achieve as he or she matures and undergoes scientific and
$ }: C/ M. ]% ~# epersistent training. But jumping to the conclusion that it is “anomalous”: _1 R3 P& l6 d0 ^6 Y6 J
based on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.
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7 K2 w& _6 w! P# J! nThird, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook+ ^' y7 ?, M7 v7 ?- H! q9 M
example of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in
1 C+ B4 o5 K1 R1 z4 u. l3 j! `3 q4 Fthe last 50 metres, but Lochte had a huge lead in the first 300 metres, so
! t# {3 | A1 U4 A. ehe chose not to push himself too hard and to conserve his energy for later+ l) ^, J9 [, _9 }4 V$ u) Y8 K; y9 u
events (whether this conforms to the Olympic spirit and the ‘use one’s3 `! g9 _3 k$ W# j0 B
best efforts to win a match’ requirement that the Badminton World7 t: K. A6 j! `3 A8 I+ ]
Federation recently invoked to disqualify four badminton pairs is another
2 z% |1 L; b; p8 {* Atopic worth discussing, though probably not in Nature). Ye, on the other
8 p0 L+ _' F/ D: B& p; \hand, was trailing behind after the first 300 metres and relied on freestyle2 g/ c4 F+ E$ G+ a" h' X
, in which she has an edge, to win the race. Failing to mention this$ ?: T3 q6 y! v p3 ^+ [
strategic difference, as well as the fact that Lochte is 23.25 seconds
" P q6 `, t) A* J: @' u3 ^faster (4:05.18) than Ye overall, creates the illusion that a woman swam+ e: e) G6 y( e J; C, `7 x- _
faster than the best man in the same sport, which sounds impossible. Putting6 g; {# Q9 z* N8 C
aside the gender argument, I believe this is still a leading question that
/ |4 x9 S6 r" j4 p fimplies to the reader that there is something fishy going on.
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" a* R) K/ h6 \. H# i% x) YFourth is another example of cherry-picking. In the same event, there are2 _1 k7 o L4 \8 Z5 e
four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93
) m# X8 J$ s) V1 b& Q& Ys) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s
4 X4 Q( k6 R& c) B' S), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns4 F9 w/ K5 V3 Q! |' K
out, if we are just talking about the last 50 metres in a 400-metre IM," d `5 h9 Y6 k! f
Lochter is not the example I would have used if I were the author. What kind
: y3 c# ^7 j0 Z* d9 ~of scientific rigorousness is Callaway trying to demonstrate here? Is it
2 h5 u6 Z, _8 I! B- O& R9 g# q8 Klogical that if Lochter is the champion, we should assume that he leads in. k7 J' ^: V; p; J. }7 _9 }
every split? That would be a terrible way to teach the public how science
; a+ c3 |6 `: H5 a% t3 mworks.
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Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and
. ^/ o. C7 Q& N3 s1 V3 K# V5 Mimplies that a drug test cannot rule out the possibility of doping. Is this: i2 e0 `7 B# R& f, I4 K# \
kind of agnosticism what Nature really wants to teach its readers? By that
1 C( ]" s3 ?# i) P8 J, Sstandard, I estimate that at least half of the peer-reviewed scientific- t/ E, t/ ]% A% m& D
papers in Nature should be retracted. How can one convince the editors and# Q( ~$ ]& i3 m5 }
reviewers that their proposed theory works for every possible case? One
. N8 A' h) y2 _' I& Ccannot. One chooses to apply the theory to typical examples and to
8 S0 B7 ?, b% B4 Xdemonstrate that in (hopefully) all scenarios considered, the theory works- a& w6 l( C Y9 J
to a degree, and that that should warrant publication until a counterexample
3 @+ U; p& M/ j' H" ]) tis found. I could imagine that Callaway has a sceptical mind, which is
8 Q/ G! g# |. Q7 r& N: m- Ecrucial to scientific thinking, but that would be put to better use if he
x3 |: Y/ j6 ]6 g, `8 qwrote a peer-reviewed paper that discussed the odds of Ye doping on a highly
8 q# Y: H1 n" d7 C& b, x7 Tadvanced, non-detectable drug that the Chinese have come up with in the7 |, Z( [" [5 @& t! q
past 4 years (they obviously did not have it in Beijing, otherwise why not
: c4 \1 e1 P* ^% Z( ~use it and woo the audience at home?), based on data and rational derivation
3 u4 i" G9 K& Z' b" G. This article, however, can be interpreted as saying that all athletes are$ h- \& T+ r/ m$ ?+ V0 A9 g
doping and the authorities are just not good enough to catch them. That may
6 h8 {8 k5 y+ l. M8 Hbe true, logically, but definitely will not make the case if there is ever a; {+ F- m$ K. _: B4 Y8 l8 R; q* P
hearing by the governing body for water sports, FINA, to determine if Ye% U6 T7 g; q" q) M8 U+ U! R0 ]9 t, K
has doped. To ask whether it is possible to obtain a false negative in a
# V# ~5 s9 G% Pdrug test looks like a rigged question to me. Of course it is possible:
0 x1 W- ]# q4 x S# Tother than the athlete taking a drug that the test is not designed to detect
+ V6 M% R, j f$ c3 E, anyone who has taken quantum 101 will tell you that everything is
8 W, u& t: ?" c) `+ E& n! Y$ _probabilistic in nature, and so there is a probability that the drug in an
( ~$ R0 p: X, o7 Oathlete’s system could tunnel out right at the moment of the test. A slight0 ]& }- h$ V4 J% R" a X- Z
chance it may be, but should we disregard all test results because of it? F3 x' E t" j% q% q
Let’s be practical and reasonable, and accept that the World Anti-Doping9 |1 z2 V$ c" {; u
agency (WADA) is competent at its job. Ye’s urine sample will be stored for
+ l) v. D5 j9 w/ E. M5 [7 Height years after the contest for future testing as technology advances.# a, b( v5 ~7 t
Innocent until proven guilty, shouldn’t it be?
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$ W [0 Q6 m4 ~ W6 dSixth, and the last point I would like to make, is that the out-of-
4 C8 {! c. ^; u* b9 {competition drug test is already in effect, which Callaway failed to mention
( N6 P1 @- S& ]# Z4 T3 E5 C2 d. As noted in the president of WADA’s press release, drug testing for
3 E9 \: L i, `; j$ s9 |Olympians began at least six months before the opening of the London
9 O+ G1 A& u$ a t0 I6 }Olympics. Furthermore, 107 athletes have been banned from this Olympics for# g$ I, Q: y \+ @ q
doping. That may be the reason that “everyone will pass at the Olympic
9 U/ q! V5 o% X ?+ S3 Ngames. Hardly anyone fails in competition testing” — those who did dope( R# k. Q) c6 X% F' B
have already been caught and sanctioned. Callaway is free to suggest that a
+ D* V) N9 W+ d* Z) ^( v8 S4 Q& Eplayer could have doped beforehand and fooled the test at the game, but this
: Y% i- l8 e( d, c% Ipossibility is certainly ruled out for Ye.
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$ A0 Z9 L7 G- N8 K, l, iOver all, even though Callaway did not falsify any data, he did (1 Y- ~0 J3 N& H6 z/ B' S+ }
intentionally or not) cherry-pick data that, in my view, are far too6 o/ @) m3 ^& L7 ~- n
suggestive to be fair and unbiased. If you want to cover a story of a! ^/ h' J3 I g
suspected doping from a scientific point of view, be impartial and provide: z7 q) n" `: Z$ B4 j$ k
all the facts for the reader to judge. You are entitled to your$ |7 f \& m: j4 v$ \5 {
interpretation of the facts, and the expression thereof in your piece,
4 f# q, p9 n4 z% f0 O. o& L Jexplicitly or otherwise, but showing only evidence that favours your9 ~- `- a' u1 _. S+ U9 Y
argument is hardly good science or journalism. Such an article in a journal
) M, {5 I5 f+ i& Z' asuch as Nature is not an appropriate example of how scientific research or
: M; ~& F1 c# Y( `# p* _reporting should be done. |
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