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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$ I$ q; l1 r2 a; }% l8 E
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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" _+ B" @9 I K* C: W: w( m Chttp://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html
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FROM LAI JIANG, Department of Chemistry, University of Pennsylvania$ {; N9 k2 |4 L* ?: q% l/ Y
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It is a shame to see Nature — which nearly all scientists, including myself
1 h$ _% G) W9 P- z, regard as one of the most prestigious and influential physical-science* V+ M1 |* n2 W3 _: T7 T) H
magazines — publish a thinly veiled biased article like this. Granted, this
5 O. T2 a$ [' l; r* pis not a peer-reviewed scientific article and did not go through the
5 B X6 |3 R' v1 @# m( ~scrutiny of picking referees. But to serve as a channel for the general
) Z3 z8 \; c4 z4 ]+ @' Opopulace to be in touch with and appreciate science, the authors and editors
f! J( J T$ ], c: dshould at least present the readers with facts within the proper context,7 |* a$ g7 L- w7 f' ~% B
which they blatantly failed to do.
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5 f1 t4 ?; ?& o" ?; F# @0 V# BFirst, to identify Ye’s performance increase, Ewen Callaway compared her
% X1 E8 G6 q, X# a: e5 ^ L6 iOlympic 400-metre IM time with her performance at the World Championships in
2 e+ S& U7 J- a4 R2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “
: T8 C! S0 H% o# x5 panomalous” improvement of around 7 seconds (6.72 s). In fact, her previous- D3 e; }5 K( r' [9 W
personal best was 4:33.79 at the Asian Games in 2010. This leads to an" p% f6 _" E8 D
improvement of 5.38 seconds. In a sporting event in which 0.1 s can be the
: s% `9 W( d8 x6 a! w% Zdifference between the gold and silver medal, I see no reason for 5.38 s to/ b) Q5 J! ~. Q3 {9 s0 I" H7 q! e
be treated as 7 s. @/ S" f) f. @' T
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Second, as previously pointed out, Ye is only 16 years old and her body is$ w: r4 W% b1 F' b6 ? q
still developing. Bettering oneself by 5 seconds over two years may seem+ `) Y3 A7 g. g8 O+ W# b
impossible for an adult swimmer, but it certainly happens among youngsters.! A/ n. X6 u" v! G
An interview with Australian gold medallist Ian Thorpe revealed that his 4002 j% j. a: C% Z/ x/ {7 J
-metre freestyle time improved by 5 seconds between the ages of 15 and 16.8 n3 j* g4 N( I9 {) W
For regular people, including Callaway, it may be hard to imagine what an
9 `5 Y6 ~) ^. velite swimmer can achieve as he or she matures and undergoes scientific and2 B9 F2 ?. \9 N$ J1 o8 v, r
persistent training. But jumping to the conclusion that it is “anomalous”
9 r" X. o, j; M0 y) G# y M4 G) Tbased on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.( I- \) a0 S% u, G
% f# h6 A) T+ P' P/ ^Third, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook
% k. [5 X" f2 N8 sexample of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in L/ Y6 [ S! n: y
the last 50 metres, but Lochte had a huge lead in the first 300 metres, so# N% f$ ]+ j: ^
he chose not to push himself too hard and to conserve his energy for later
4 b. j, @. T0 x1 `3 L; f4 Aevents (whether this conforms to the Olympic spirit and the ‘use one’s9 _2 G; ~) t4 X4 x1 ?2 @! a
best efforts to win a match’ requirement that the Badminton World' Z2 J O& a2 d0 h7 _
Federation recently invoked to disqualify four badminton pairs is another
- Y7 k2 r$ L9 V7 U: v) s( qtopic worth discussing, though probably not in Nature). Ye, on the other
2 k" _- s7 o( X0 ?1 a7 Ihand, was trailing behind after the first 300 metres and relied on freestyle
; K8 w Q! M& S8 e; A5 j: Z, in which she has an edge, to win the race. Failing to mention this
# c. ~2 f, w" Kstrategic difference, as well as the fact that Lochte is 23.25 seconds
0 _% g! B) p+ Y Q; Lfaster (4:05.18) than Ye overall, creates the illusion that a woman swam9 H- _1 u6 ^5 \0 T/ D, z* ~
faster than the best man in the same sport, which sounds impossible. Putting3 _6 J" T, Q/ _* `2 q; @
aside the gender argument, I believe this is still a leading question that
. Z0 I6 P: e! ?7 l& dimplies to the reader that there is something fishy going on.
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Fourth is another example of cherry-picking. In the same event, there are
% b4 v; _( n0 x& g. w! Gfour male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93; \. P t4 E- |) r6 V; P
s) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s
/ M+ V% \& B+ F$ E \4 G. b2 n0 v4 ~), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns
# T+ G. H5 T# Q, n5 z# Rout, if we are just talking about the last 50 metres in a 400-metre IM,) Y3 r7 K+ t, |" M! n/ ~
Lochter is not the example I would have used if I were the author. What kind
4 w$ G" M. m# r* Z5 [3 Fof scientific rigorousness is Callaway trying to demonstrate here? Is it j, V$ l6 i# l' R9 o3 G
logical that if Lochter is the champion, we should assume that he leads in
; w/ l" j5 |- L$ j8 |every split? That would be a terrible way to teach the public how science* n, J( V/ i- ?) S
works.& f9 q1 C+ d% l/ C" k3 y. c
. @5 l2 o: d+ z ?Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and/ p Z- U/ N# U! V1 `
implies that a drug test cannot rule out the possibility of doping. Is this% |" }8 _1 W5 h! I
kind of agnosticism what Nature really wants to teach its readers? By that
; ? p% ?# Q5 R% Gstandard, I estimate that at least half of the peer-reviewed scientific
. l& c2 j" g. c/ A0 wpapers in Nature should be retracted. How can one convince the editors and
5 a. C* Z: p$ B9 Mreviewers that their proposed theory works for every possible case? One
1 r4 U$ P1 k% b! u8 I/ D. Zcannot. One chooses to apply the theory to typical examples and to0 J9 \1 c3 t* x2 v" e
demonstrate that in (hopefully) all scenarios considered, the theory works) a7 s' W$ s' U+ @, ]
to a degree, and that that should warrant publication until a counterexample$ e( y, o. h* l7 ^+ [ k
is found. I could imagine that Callaway has a sceptical mind, which is
2 |7 W! t5 S$ N6 O: rcrucial to scientific thinking, but that would be put to better use if he$ i( {( A' T) U
wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly
* Y' W `6 \) W. j/ iadvanced, non-detectable drug that the Chinese have come up with in the+ E" E3 Y4 V) n& R3 M
past 4 years (they obviously did not have it in Beijing, otherwise why not7 Z' ]! V; G- J2 S0 o4 O
use it and woo the audience at home?), based on data and rational derivation3 Y5 v5 d# C3 k# ~
. This article, however, can be interpreted as saying that all athletes are' e1 Y" [+ O) \0 ~
doping and the authorities are just not good enough to catch them. That may. M6 j# L( y& L+ U' G
be true, logically, but definitely will not make the case if there is ever a9 O" u0 K; [ f4 Q X s# e
hearing by the governing body for water sports, FINA, to determine if Ye, K$ m/ e% ^2 z0 I: V5 M
has doped. To ask whether it is possible to obtain a false negative in a
. p8 E" k1 X( N7 F9 h5 p- F8 ]0 Z' Hdrug test looks like a rigged question to me. Of course it is possible:. _' g9 s0 ]( n# J; N6 q- z
other than the athlete taking a drug that the test is not designed to detect3 G4 i5 H( H9 t, Q7 J+ g
, anyone who has taken quantum 101 will tell you that everything is
$ ?9 b" X7 O+ g& q6 Z, U& }probabilistic in nature, and so there is a probability that the drug in an% O8 `% O9 _0 V* M
athlete’s system could tunnel out right at the moment of the test. A slight
1 v% F4 Y+ h9 O! R. v: Qchance it may be, but should we disregard all test results because of it?
5 o- R7 N% ]/ CLet’s be practical and reasonable, and accept that the World Anti-Doping
; l5 x* }, h1 @. I* g2 Oagency (WADA) is competent at its job. Ye’s urine sample will be stored for
3 X \: z8 t, Q- R' n/ C. \eight years after the contest for future testing as technology advances." |" C- [! g5 f
Innocent until proven guilty, shouldn’t it be?0 J3 `# E2 G$ O( t' Z( p7 p
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Sixth, and the last point I would like to make, is that the out-of-- i' _* _9 P' w7 m9 G# [$ @
competition drug test is already in effect, which Callaway failed to mention5 y) a) |* b- T( H, @
. As noted in the president of WADA’s press release, drug testing for5 k0 E2 @- y* H7 r. z+ y2 b
Olympians began at least six months before the opening of the London# n% ^* G/ `( b: t( b2 l$ s
Olympics. Furthermore, 107 athletes have been banned from this Olympics for* H5 I" y5 X$ h+ _3 J4 k
doping. That may be the reason that “everyone will pass at the Olympic0 l( F3 o' W g4 j3 I
games. Hardly anyone fails in competition testing” — those who did dope! U4 X* k$ V6 @- r4 h
have already been caught and sanctioned. Callaway is free to suggest that a
/ ?0 V! {+ U. B: ^9 h# O9 R( ]player could have doped beforehand and fooled the test at the game, but this: u5 z4 L h* G x
possibility is certainly ruled out for Ye.
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1 o6 K" N# V+ p8 }, lOver all, even though Callaway did not falsify any data, he did (/ |& x8 Y. Y9 u0 J% @
intentionally or not) cherry-pick data that, in my view, are far too
$ ]: n& [ T: J8 Y# esuggestive to be fair and unbiased. If you want to cover a story of a
, B6 W7 ~! m6 g, n o1 v& z% |suspected doping from a scientific point of view, be impartial and provide
' S9 ?' a% S0 z- }# d" vall the facts for the reader to judge. You are entitled to your6 ]' Q! H. t& r; d5 l2 @
interpretation of the facts, and the expression thereof in your piece,
i' v% ?! B7 b8 P* nexplicitly or otherwise, but showing only evidence that favours your2 l/ x7 I$ n" H9 z* s; _( T
argument is hardly good science or journalism. Such an article in a journal
& M) g! y( E7 B3 r4 m5 k& M& M' xsuch as Nature is not an appropriate example of how scientific research or
- B$ N; Q ]+ y( y% ~/ _- vreporting should be done. |
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