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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 JIANG6 R( d" r! H4 i! F
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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! L! P- q! x. I" H: W- z6 _( Chttp://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html
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! f/ d5 v' z* e) o1 BFROM LAI JIANG, Department of Chemistry, University of Pennsylvania
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4 B0 K- s* I. v5 p5 y% _( D1 Z# mIt is a shame to see Nature — which nearly all scientists, including myself
8 b5 T5 o2 \. y0 r, regard as one of the most prestigious and influential physical-science
( j* b7 i8 e3 |. M4 K5 cmagazines — publish a thinly veiled biased article like this. Granted, this9 F3 f% r% b' c# y
is not a peer-reviewed scientific article and did not go through the9 y% v- n. {* d) }
scrutiny of picking referees. But to serve as a channel for the general
4 ]( V& ~1 h* b8 d( Fpopulace to be in touch with and appreciate science, the authors and editors
c! x" B, v, }' T( _should at least present the readers with facts within the proper context,
5 T5 j! m" j$ Z( Q1 hwhich they blatantly failed to do.
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* w- Q# Q- j# ?' d& PFirst, to identify Ye’s performance increase, Ewen Callaway compared her
. ]0 J, d& B2 N4 S; T1 eOlympic 400-metre IM time with her performance at the World Championships in
6 V; r3 v6 Y: V6 T2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “
1 \1 ]9 v# ~/ Aanomalous” improvement of around 7 seconds (6.72 s). In fact, her previous( K V& i" k. p N
personal best was 4:33.79 at the Asian Games in 2010. This leads to an" j! s* g. D) C5 Y& W
improvement of 5.38 seconds. In a sporting event in which 0.1 s can be the
0 K# r5 V a# q" m5 M! q# hdifference between the gold and silver medal, I see no reason for 5.38 s to
/ h/ u: K; l. ?/ P" E8 j( ]' P6 Wbe treated as 7 s.# d( i! a* s2 g( a. @! [0 x
" D: |% E! ~2 o; H! `' MSecond, as previously pointed out, Ye is only 16 years old and her body is
0 U9 a0 h& A0 y5 \" istill developing. Bettering oneself by 5 seconds over two years may seem
+ n3 A8 Q- K$ w2 k) D. Q0 N, gimpossible for an adult swimmer, but it certainly happens among youngsters.
4 [! I1 A: D- p% ^, ^- wAn interview with Australian gold medallist Ian Thorpe revealed that his 400
& E7 K0 Z0 h: u/ r4 i8 M-metre freestyle time improved by 5 seconds between the ages of 15 and 16.
' J+ S% O# O' i/ LFor regular people, including Callaway, it may be hard to imagine what an2 z. ?6 S! Z, @: Y x2 ]
elite swimmer can achieve as he or she matures and undergoes scientific and s/ y( s1 R2 s/ n- l3 A3 A9 J
persistent training. But jumping to the conclusion that it is “anomalous”4 c. Z; k0 H- ~# B0 c3 Z
based on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.
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Third, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook
: p) F0 X8 O/ w3 rexample of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in3 q$ K! f1 [* h [
the last 50 metres, but Lochte had a huge lead in the first 300 metres, so
. Y# a6 o0 N6 k2 c& dhe chose not to push himself too hard and to conserve his energy for later
8 h4 n! r8 j1 [7 I+ V# D" Nevents (whether this conforms to the Olympic spirit and the ‘use one’s
: O& j. E. Z8 j* o) {9 e, X% s+ @* h+ Pbest efforts to win a match’ requirement that the Badminton World
* F8 M. Z9 B5 M) g2 c0 HFederation recently invoked to disqualify four badminton pairs is another
) l+ {; I O& u% H) \topic worth discussing, though probably not in Nature). Ye, on the other
# F. p7 H6 ]* Z5 z2 [: Jhand, was trailing behind after the first 300 metres and relied on freestyle5 H8 ?( d: J2 H* m
, in which she has an edge, to win the race. Failing to mention this. h" ?! C' C$ K$ p3 m4 l3 ~& `5 k
strategic difference, as well as the fact that Lochte is 23.25 seconds
) R: x* a; ~: ]. e1 t& O3 yfaster (4:05.18) than Ye overall, creates the illusion that a woman swam
# ]8 [& w% m* U0 c5 [faster than the best man in the same sport, which sounds impossible. Putting
" V5 s: i5 l/ d# }aside the gender argument, I believe this is still a leading question that
* f# n8 }3 A7 A8 [! Dimplies to the reader that there is something fishy going on.
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2 [8 f3 r, N: I3 m6 wFourth is another example of cherry-picking. In the same event, there are" n. L' A) Z* k" c
four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93
3 d! B3 j$ I C" c5 b Fs) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s+ o: W1 S% O0 K l# G7 _* @
), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns
+ }, N; r( K' ?. R- k1 Jout, if we are just talking about the last 50 metres in a 400-metre IM,
% }1 |+ H( e+ q# p( h& Q! j3 g# ULochter is not the example I would have used if I were the author. What kind; i) t; j' A8 f' c9 I
of scientific rigorousness is Callaway trying to demonstrate here? Is it3 x3 Q( s1 `/ a
logical that if Lochter is the champion, we should assume that he leads in
/ \$ t) s$ L. l+ v Fevery split? That would be a terrible way to teach the public how science
) l n9 v9 O: [+ W0 w# Mworks.5 h) y5 g6 P9 u8 J7 E7 X
8 P! \2 @. z' D" `+ M; ?' dFifth is the issue I oppose the most. Callaway quotes Ross Tucker and, B: X" N: ~" {1 e5 a& J9 }$ s
implies that a drug test cannot rule out the possibility of doping. Is this
* y. ]& r! v8 o3 B& ^! T5 tkind of agnosticism what Nature really wants to teach its readers? By that
' X% Z; _! u- S" y8 ^& @* Q, d. xstandard, I estimate that at least half of the peer-reviewed scientific* u; ^0 B) R; S. H, |9 U
papers in Nature should be retracted. How can one convince the editors and
8 a0 v& d6 X' Y1 K* C2 K# `reviewers that their proposed theory works for every possible case? One
; j7 H1 f. ?; U! a7 I) Ucannot. One chooses to apply the theory to typical examples and to. n; g1 b8 G0 [% e3 w* Q3 m1 O# X1 f
demonstrate that in (hopefully) all scenarios considered, the theory works& H; ` `5 U1 `
to a degree, and that that should warrant publication until a counterexample
) c, Q8 B" M6 ^' a9 w# s4 {' pis found. I could imagine that Callaway has a sceptical mind, which is
6 H, A; J, U; R4 Q7 Q# U, icrucial to scientific thinking, but that would be put to better use if he
( w" U$ @6 u% @/ S1 z* h4 qwrote a peer-reviewed paper that discussed the odds of Ye doping on a highly* p! q% o7 s2 [+ V& a) j
advanced, non-detectable drug that the Chinese have come up with in the) ]( L4 @3 F/ a1 O; U5 L8 F7 ~& x
past 4 years (they obviously did not have it in Beijing, otherwise why not7 l- D9 F9 h) K9 G/ z9 k$ {
use it and woo the audience at home?), based on data and rational derivation# H! Y$ n6 o, L9 \' q
. This article, however, can be interpreted as saying that all athletes are) N( R2 D4 I$ u. v# k
doping and the authorities are just not good enough to catch them. That may
+ t; u1 x1 E+ ^8 c, H' Cbe true, logically, but definitely will not make the case if there is ever a3 q- |. Q! ]6 u0 b, l/ q
hearing by the governing body for water sports, FINA, to determine if Ye
6 ?: z8 l" s. n/ Rhas doped. To ask whether it is possible to obtain a false negative in a
& U! h& J6 B6 `; t2 kdrug test looks like a rigged question to me. Of course it is possible:
& `6 r# m+ M; D; N( r2 v8 gother than the athlete taking a drug that the test is not designed to detect
7 r H4 B7 W1 R4 D3 \' X# A; ?1 V. _, anyone who has taken quantum 101 will tell you that everything is: z9 k5 B3 g) q9 S' q
probabilistic in nature, and so there is a probability that the drug in an
) B% W- `; e: \$ R L: d+ dathlete’s system could tunnel out right at the moment of the test. A slight
9 `, k* V3 {1 ~, t5 p; I/ ychance it may be, but should we disregard all test results because of it?
. P/ L. [+ o3 A2 H- C( [Let’s be practical and reasonable, and accept that the World Anti-Doping
O5 ^# h* v; ?4 r$ Wagency (WADA) is competent at its job. Ye’s urine sample will be stored for
, k3 T0 c/ I- p3 _3 N. ieight years after the contest for future testing as technology advances.% D5 P, l: G4 U
Innocent until proven guilty, shouldn’t it be?
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0 O! c; D5 f( h+ c5 v m9 SSixth, and the last point I would like to make, is that the out-of-
1 u0 q* @( Z# D, ~+ G8 S/ B( Rcompetition drug test is already in effect, which Callaway failed to mention5 J4 o$ h0 d/ n. w* C7 j8 y
. As noted in the president of WADA’s press release, drug testing for
( N5 B( W1 F) U5 g0 W9 SOlympians began at least six months before the opening of the London
& b4 ~! P* i) _9 KOlympics. Furthermore, 107 athletes have been banned from this Olympics for& g/ G$ X, |. Y; Q. c2 z* {: W
doping. That may be the reason that “everyone will pass at the Olympic z, |0 T$ _3 O0 q$ j. Y
games. Hardly anyone fails in competition testing” — those who did dope t! A2 u* _, o( M, f& o; h3 B
have already been caught and sanctioned. Callaway is free to suggest that a. E) b3 A# b4 Y
player could have doped beforehand and fooled the test at the game, but this
" G: y' i J# o( l. E- Apossibility is certainly ruled out for Ye.
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5 j ?$ P+ w. d) K6 x7 w9 h) pOver all, even though Callaway did not falsify any data, he did (# X+ Q" |$ J+ E* i. y' V
intentionally or not) cherry-pick data that, in my view, are far too
+ q5 J4 u; m" L: O M1 V( o' Rsuggestive to be fair and unbiased. If you want to cover a story of a9 [( Q6 J- L P6 u6 p0 q7 a7 W
suspected doping from a scientific point of view, be impartial and provide
9 _9 p s. R' Y) k& w3 tall the facts for the reader to judge. You are entitled to your+ I4 B% l* K# I; {3 @; a& T
interpretation of the facts, and the expression thereof in your piece,
. T! S4 g, B" q2 r% P0 fexplicitly or otherwise, but showing only evidence that favours your. ~4 q7 E7 ]5 J8 ?' B
argument is hardly good science or journalism. Such an article in a journal' k( u$ W6 O2 C! f4 m, V
such as Nature is not an appropriate example of how scientific research or
- q' o. X3 o, {+ q$ |: | g. s/ ereporting should be done. |
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