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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 JIANG3 c' A: s, {" b$ f) N6 `" c( X
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
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5 i# ^6 j# y" r: b" w/ S. iFROM LAI JIANG, Department of Chemistry, University of Pennsylvania" n% j1 d m3 N0 a
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It is a shame to see Nature — which nearly all scientists, including myself
$ d/ `, r6 l7 `2 X1 B, regard as one of the most prestigious and influential physical-science
. P; ?- k6 ]2 E( r, p+ D# e" U3 _( ?" bmagazines — publish a thinly veiled biased article like this. Granted, this
9 L2 N. g K2 pis not a peer-reviewed scientific article and did not go through the& k# q1 b& s2 d6 j
scrutiny of picking referees. But to serve as a channel for the general: G1 \% O- W. `( ?5 Z: I
populace to be in touch with and appreciate science, the authors and editors1 H/ z, K; @. ?, T
should at least present the readers with facts within the proper context,
. N9 ~7 X: l/ E Z: X' p3 V) @! Swhich they blatantly failed to do.( w; p6 S, n5 }, j/ X* F& ? y
6 S2 ~8 ^+ E7 k, vFirst, to identify Ye’s performance increase, Ewen Callaway compared her. @) S r7 S) I7 z" P9 M8 B
Olympic 400-metre IM time with her performance at the World Championships in9 D! Q- C+ V8 \* L" [7 e
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “( g6 \6 }$ A6 q
anomalous” improvement of around 7 seconds (6.72 s). In fact, her previous
" s6 \0 S/ {& \1 p& Z# K" Y& Qpersonal best was 4:33.79 at the Asian Games in 2010. This leads to an% t6 R% F: v- M5 w- `, Y
improvement of 5.38 seconds. In a sporting event in which 0.1 s can be the
o- a- n- e3 {1 Q6 g1 sdifference between the gold and silver medal, I see no reason for 5.38 s to1 \0 A( D5 {; m Z5 i' L
be treated as 7 s.3 ^: X6 G K1 ]; h- k, G; ]# z
* K: V: @6 A3 h% X7 L% {Second, as previously pointed out, Ye is only 16 years old and her body is
8 p: R3 R8 E5 ~. r9 Kstill developing. Bettering oneself by 5 seconds over two years may seem
G3 a* X Z+ M+ V9 r! L! O' Nimpossible for an adult swimmer, but it certainly happens among youngsters.8 Z5 L4 T. \! k$ M5 c4 \7 G1 h* f
An interview with Australian gold medallist Ian Thorpe revealed that his 400
7 g* h$ H7 j5 b% ~-metre freestyle time improved by 5 seconds between the ages of 15 and 16.
c4 B8 R6 `" s2 A- [; H" J. JFor regular people, including Callaway, it may be hard to imagine what an2 K: Y% Q7 ], n/ a6 u# ?" q/ q
elite swimmer can achieve as he or she matures and undergoes scientific and
; t4 a3 D. O# O: G* }persistent training. But jumping to the conclusion that it is “anomalous”6 u) W3 w/ L T0 l( H
based on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.
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* ?- f7 _% H. @ IThird, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook
" s! X2 _7 s% p. Z4 C# Pexample of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in
3 Q2 p9 b. B5 s* m2 Ythe last 50 metres, but Lochte had a huge lead in the first 300 metres, so4 M0 U3 c0 n! n6 G7 F4 ]; X9 v
he chose not to push himself too hard and to conserve his energy for later2 A0 N: Q! Q6 p5 _4 }2 r1 W2 t
events (whether this conforms to the Olympic spirit and the ‘use one’s" x5 i" X. q) N- z; Z
best efforts to win a match’ requirement that the Badminton World
; C3 N8 d+ f6 `) n5 |' lFederation recently invoked to disqualify four badminton pairs is another" ]) D+ Z0 F9 U8 K2 v7 l: r
topic worth discussing, though probably not in Nature). Ye, on the other
5 I' ~, X! g U! o# E4 O; W+ Thand, was trailing behind after the first 300 metres and relied on freestyle# a9 h6 a3 ]$ b9 F6 L2 @
, in which she has an edge, to win the race. Failing to mention this" D$ ^7 W4 l5 w5 Y
strategic difference, as well as the fact that Lochte is 23.25 seconds# h/ }3 }7 }6 N4 l- N4 [2 _% _
faster (4:05.18) than Ye overall, creates the illusion that a woman swam" y6 a$ _# q7 P# j: p
faster than the best man in the same sport, which sounds impossible. Putting
' n* |" y9 k9 \1 naside the gender argument, I believe this is still a leading question that
% M. s/ Q3 k1 L cimplies to the reader that there is something fishy going on.! f2 r( h6 K0 W+ ?5 R
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Fourth is another example of cherry-picking. In the same event, there are7 {! G! G3 b+ Q% h1 G6 C. F4 l
four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93
7 ~2 S) g+ x6 p% z/ Xs) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s3 w5 U4 \9 w7 r" j
), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns/ l: S) f9 p3 D) s% _% z
out, if we are just talking about the last 50 metres in a 400-metre IM,. v k1 F+ T9 M
Lochter is not the example I would have used if I were the author. What kind
& ^/ k8 M/ U `/ E. lof scientific rigorousness is Callaway trying to demonstrate here? Is it& ?& p2 A& ?0 i) m+ d! Y7 u. ]/ M
logical that if Lochter is the champion, we should assume that he leads in. I1 [7 v% R0 ~$ S" a
every split? That would be a terrible way to teach the public how science4 z$ ~: q( U% j' b
works.
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Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and8 I9 @7 b$ b. Z; Q5 s% J
implies that a drug test cannot rule out the possibility of doping. Is this8 e9 ]% s: [$ w, i9 H4 R$ r2 ]
kind of agnosticism what Nature really wants to teach its readers? By that
% m6 O) z* [8 a3 o2 L; @* Estandard, I estimate that at least half of the peer-reviewed scientific
) ~+ A+ J5 }4 w7 ppapers in Nature should be retracted. How can one convince the editors and
, m+ f% P' n$ Freviewers that their proposed theory works for every possible case? One8 ?6 G [! h& t( S8 k1 s7 A0 k
cannot. One chooses to apply the theory to typical examples and to
) ]/ | ]5 u7 v4 `* C) _, ?1 wdemonstrate that in (hopefully) all scenarios considered, the theory works
/ A2 t5 a) y1 Xto a degree, and that that should warrant publication until a counterexample
% R/ `2 Y+ D6 U# V- G bis found. I could imagine that Callaway has a sceptical mind, which is' a$ m4 z! P" |/ z- W
crucial to scientific thinking, but that would be put to better use if he
. }1 |) s/ A" f& {wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly
4 E+ R) _8 e5 H5 R3 ?. h* wadvanced, non-detectable drug that the Chinese have come up with in the, T& B% {' j& L: R0 }# }% k! \
past 4 years (they obviously did not have it in Beijing, otherwise why not% Q) b% v" C' Y' [: I1 J5 V4 C8 e
use it and woo the audience at home?), based on data and rational derivation2 ^" {1 V; K, ^0 \. D
. This article, however, can be interpreted as saying that all athletes are+ Q7 s6 O! z/ c; F
doping and the authorities are just not good enough to catch them. That may5 ~; T$ o+ c0 ^$ `2 x( G% A: t' I
be true, logically, but definitely will not make the case if there is ever a% z+ h$ s& x3 [! }: V8 K
hearing by the governing body for water sports, FINA, to determine if Ye$ ~& e+ R8 x) v5 F( B* K( l/ G; d
has doped. To ask whether it is possible to obtain a false negative in a2 ^) l6 [) G# h- w8 c1 B9 r e9 ?
drug test looks like a rigged question to me. Of course it is possible:9 h' e' H4 G% W4 ]+ n
other than the athlete taking a drug that the test is not designed to detect7 \6 J$ ?/ @3 x4 i
, anyone who has taken quantum 101 will tell you that everything is
+ ~7 R- S2 _0 q5 I8 C# a' cprobabilistic in nature, and so there is a probability that the drug in an: m2 G' H# V: l* i
athlete’s system could tunnel out right at the moment of the test. A slight0 l8 J0 g% @" U, u9 d
chance it may be, but should we disregard all test results because of it?% F' }7 m% u" R/ `, M
Let’s be practical and reasonable, and accept that the World Anti-Doping7 \# x# u$ P9 V1 v7 O6 Z
agency (WADA) is competent at its job. Ye’s urine sample will be stored for
: o1 g% F- S. Oeight years after the contest for future testing as technology advances.
t5 V6 ^/ y: K/ A# Q: wInnocent until proven guilty, shouldn’t it be?
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! |, c% J/ X$ K+ z/ n3 |* eSixth, and the last point I would like to make, is that the out-of-( M9 i! ^6 L8 R) W4 n
competition drug test is already in effect, which Callaway failed to mention
5 @5 O. M% _: F9 P9 N. N. As noted in the president of WADA’s press release, drug testing for# J, y0 z. y. ~8 g5 Z
Olympians began at least six months before the opening of the London' K8 f( |& O i% e7 ?% ]* R
Olympics. Furthermore, 107 athletes have been banned from this Olympics for
1 r& M: s6 o3 [8 Idoping. That may be the reason that “everyone will pass at the Olympic' a: W, } l8 @, Y4 q5 |
games. Hardly anyone fails in competition testing” — those who did dope1 q* b7 d! ^( P' a" B+ c
have already been caught and sanctioned. Callaway is free to suggest that a
8 ^5 ]8 T7 L/ }player could have doped beforehand and fooled the test at the game, but this( G+ p; U; o. C+ W
possibility is certainly ruled out for Ye.6 j( J# G+ H' z9 m, q' ?
& _( X) O( g/ |9 u' z9 T1 sOver all, even though Callaway did not falsify any data, he did (+ @, K& W: D3 W# N8 y/ R, U' k
intentionally or not) cherry-pick data that, in my view, are far too M+ q) e/ R1 g4 P [/ P- P
suggestive to be fair and unbiased. If you want to cover a story of a6 e3 }6 f* D' e3 |6 o
suspected doping from a scientific point of view, be impartial and provide
8 m! E! @& x& Qall the facts for the reader to judge. You are entitled to your/ u4 Q: v1 F" f+ @
interpretation of the facts, and the expression thereof in your piece,( n2 S+ U( a- w+ W# A. @" Y. s
explicitly or otherwise, but showing only evidence that favours your! C; ^3 x o' |( D R
argument is hardly good science or journalism. Such an article in a journal
t4 v4 @. U2 B' _/ P. ~such as Nature is not an appropriate example of how scientific research or; h! ?& [4 U7 K; Q1 o8 H) [1 a
reporting should be done. |
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