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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; c# [$ q/ n, \( f, w5 D
如果是中国长大的,英语能到这种程度真是很不简单。1 b5 N! p1 _' Q' y5 I
1 x; Y( X- \5 ^" J; x( Khttp://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html
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FROM LAI JIANG, Department of Chemistry, University of Pennsylvania p, o& d& q6 X h, \( O2 Q$ p1 Z; z
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It is a shame to see Nature — which nearly all scientists, including myself
# z+ [% U' j2 o, regard as one of the most prestigious and influential physical-science
# h7 f9 V" w3 o* C3 y Smagazines — publish a thinly veiled biased article like this. Granted, this$ ^! [4 E: |$ G$ z6 n4 v" A
is not a peer-reviewed scientific article and did not go through the# D% W7 o* Y2 F& ^( d
scrutiny of picking referees. But to serve as a channel for the general
- M: K" f/ c5 `3 ~. Y, o: |populace to be in touch with and appreciate science, the authors and editors$ C& j, E+ i( v$ f
should at least present the readers with facts within the proper context,
' C }, b: j w; [which they blatantly failed to do.
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First, to identify Ye’s performance increase, Ewen Callaway compared her4 u8 V& a) [, M8 t
Olympic 400-metre IM time with her performance at the World Championships in
: _' S( m9 G, [# A$ R# p, J2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “
- N" Q% A1 x5 ~3 Fanomalous” improvement of around 7 seconds (6.72 s). In fact, her previous! n, i& s! I! g% w
personal best was 4:33.79 at the Asian Games in 2010. This leads to an
: U) e, k3 n6 `7 g! V- r. Limprovement of 5.38 seconds. In a sporting event in which 0.1 s can be the: W, W; _- ^6 K- Y* ?
difference between the gold and silver medal, I see no reason for 5.38 s to2 m7 W7 J7 \4 g2 x7 X
be treated as 7 s.4 W: D6 ~- V3 L, e
8 F) L- |4 O! uSecond, as previously pointed out, Ye is only 16 years old and her body is. G/ P: P) B1 [) Z
still developing. Bettering oneself by 5 seconds over two years may seem* R* B, }" v6 A$ J! q1 @( x
impossible for an adult swimmer, but it certainly happens among youngsters." Y- t" M e( g/ [
An interview with Australian gold medallist Ian Thorpe revealed that his 400$ A8 w) P! P4 N5 n! w9 [4 W6 }
-metre freestyle time improved by 5 seconds between the ages of 15 and 16.
9 W/ E7 u7 ~# \$ h5 y% }) e' \For regular people, including Callaway, it may be hard to imagine what an( L. g& K- _ z) a
elite swimmer can achieve as he or she matures and undergoes scientific and* N d3 v9 a( }% ^% U: v5 t
persistent training. But jumping to the conclusion that it is “anomalous”& b3 ^1 [0 `/ P
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' b" {3 A; f' n( `$ L- |1 C! `
example of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in
/ ?) z& H) X9 v; x) E# e/ u$ p$ E' {the last 50 metres, but Lochte had a huge lead in the first 300 metres, so U* Q' |) e' c
he chose not to push himself too hard and to conserve his energy for later; l. s) R3 ?" s! ~* T! `- A) [
events (whether this conforms to the Olympic spirit and the ‘use one’s
9 ?: f9 L G& d: E( D, t- O/ Obest efforts to win a match’ requirement that the Badminton World
( x# I( h; }% P3 C- {% lFederation recently invoked to disqualify four badminton pairs is another
. a% H- a/ G6 E, Atopic worth discussing, though probably not in Nature). Ye, on the other( [/ z( n( |1 p+ V0 s' Y- K; j0 u4 ]: j
hand, was trailing behind after the first 300 metres and relied on freestyle
5 p& p5 {5 _! S" u1 {, in which she has an edge, to win the race. Failing to mention this
# c9 E& e( T( u1 q- j9 Bstrategic difference, as well as the fact that Lochte is 23.25 seconds
9 ]2 g t( \2 J5 f$ u. Ofaster (4:05.18) than Ye overall, creates the illusion that a woman swam
* G% o% z" H) Dfaster than the best man in the same sport, which sounds impossible. Putting
, P3 _9 q J% e, [' Uaside the gender argument, I believe this is still a leading question that2 O4 g# a' m& z! Q/ B1 y4 Y
implies to the reader that there is something fishy going on.
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D3 ]9 x& l/ N( P" x mFourth is another example of cherry-picking. In the same event, there are6 k0 \" ]0 i# C P1 D6 g$ G
four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93
- F; u: g3 a( p6 d$ j5 \& A6 ^s) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s
4 ]: X# d; a3 |), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns# E2 ]2 ?$ y; Q$ j
out, if we are just talking about the last 50 metres in a 400-metre IM,1 `+ y% U& f9 ~. M2 k: C
Lochter is not the example I would have used if I were the author. What kind2 z, c' ]! i- ]2 ^$ w
of scientific rigorousness is Callaway trying to demonstrate here? Is it
/ X0 x7 H) B" J k8 Elogical that if Lochter is the champion, we should assume that he leads in" h8 R1 L2 Z [5 o
every split? That would be a terrible way to teach the public how science
# {" {1 }' {& _6 {# gworks.- {+ c3 X9 U0 ^% Q$ B) E3 V
! O* u7 O. b9 n( S* n, OFifth is the issue I oppose the most. Callaway quotes Ross Tucker and
6 L$ h9 P3 N/ @! o: y3 Wimplies that a drug test cannot rule out the possibility of doping. Is this
% G$ U5 [' l7 Z4 m' I5 n" rkind of agnosticism what Nature really wants to teach its readers? By that; I: h& ~- R: [' ~. i
standard, I estimate that at least half of the peer-reviewed scientific
+ [2 F6 f/ `3 x3 P/ F& G- Ipapers in Nature should be retracted. How can one convince the editors and. T/ [+ l7 o2 \+ x/ v
reviewers that their proposed theory works for every possible case? One
/ } ~/ q) r7 M, o0 x D) ucannot. One chooses to apply the theory to typical examples and to/ Q6 X+ n9 C1 E
demonstrate that in (hopefully) all scenarios considered, the theory works, j6 J4 n2 L; |( y" p0 m
to a degree, and that that should warrant publication until a counterexample
1 ~4 _) N# X$ t% y" }is found. I could imagine that Callaway has a sceptical mind, which is
/ q# L6 h2 c. k7 X. y2 k+ Icrucial to scientific thinking, but that would be put to better use if he
" ~% }9 _! o' u* awrote a peer-reviewed paper that discussed the odds of Ye doping on a highly
8 A o6 S# A% Q" |" nadvanced, non-detectable drug that the Chinese have come up with in the/ a/ K5 z$ i# r3 N J9 T9 p
past 4 years (they obviously did not have it in Beijing, otherwise why not" ]9 J- v' h( L: y
use it and woo the audience at home?), based on data and rational derivation+ @. {4 f, G6 K* K( }: N
. This article, however, can be interpreted as saying that all athletes are- u1 ?' Y# ^- M4 M8 ?
doping and the authorities are just not good enough to catch them. That may
8 l k+ u9 R$ Nbe true, logically, but definitely will not make the case if there is ever a
) t8 S/ N2 E4 r/ v4 l% l% Ohearing by the governing body for water sports, FINA, to determine if Ye+ B: o2 O2 K1 @0 c; o H
has doped. To ask whether it is possible to obtain a false negative in a
8 F% x/ n" t! }; }# p5 Rdrug test looks like a rigged question to me. Of course it is possible:1 {: M" h& H [4 v
other than the athlete taking a drug that the test is not designed to detect
) x I& |+ b# _# p, anyone who has taken quantum 101 will tell you that everything is
/ n8 M" k$ [7 aprobabilistic in nature, and so there is a probability that the drug in an0 |: N1 Y$ L- B# m" X- x
athlete’s system could tunnel out right at the moment of the test. A slight. ?1 c0 Q( ]! c6 v' U: _7 a
chance it may be, but should we disregard all test results because of it? ~ A' ]& J# R2 u
Let’s be practical and reasonable, and accept that the World Anti-Doping2 k. z$ }% J. z* S
agency (WADA) is competent at its job. Ye’s urine sample will be stored for
+ Z# o# S% U. n0 L/ V. r+ m3 G. keight years after the contest for future testing as technology advances.
$ e0 W' n: H/ Z/ |# J# q8 x3 v, s* kInnocent until proven guilty, shouldn’t it be?
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: E% q- {5 e0 v; {Sixth, and the last point I would like to make, is that the out-of-! S. `# T( n! L& x
competition drug test is already in effect, which Callaway failed to mention8 I- H7 ?( }4 o# O
. As noted in the president of WADA’s press release, drug testing for) _7 C% i2 N( ^& L8 i3 y
Olympians began at least six months before the opening of the London
% L7 K) x b4 o# ^Olympics. Furthermore, 107 athletes have been banned from this Olympics for
1 z1 O3 E% G! B" V( F" ~doping. That may be the reason that “everyone will pass at the Olympic' }$ _- H3 |6 |: S+ z; d0 r& |8 X
games. Hardly anyone fails in competition testing” — those who did dope
# u& A W& s% B$ Shave already been caught and sanctioned. Callaway is free to suggest that a
5 ^% R, ?% f7 I. W9 y, U v3 oplayer could have doped beforehand and fooled the test at the game, but this5 z9 i" U/ ^8 Z: B' R0 P
possibility is certainly ruled out for Ye./ l! U* L9 J5 q% F
# [ L6 C9 ]- L. T: h3 VOver all, even though Callaway did not falsify any data, he did (- {! t- l* z! F3 [' f% n v
intentionally or not) cherry-pick data that, in my view, are far too) I' f$ E4 a P! E* A9 {/ F
suggestive to be fair and unbiased. If you want to cover a story of a
0 A) l; ~& K$ k0 Gsuspected doping from a scientific point of view, be impartial and provide
4 I) }) m! K3 n" X, G2 Y6 P! Call the facts for the reader to judge. You are entitled to your5 |" s( P0 e R( n, r7 W, _
interpretation of the facts, and the expression thereof in your piece,
; K: ^4 Y( E8 {$ h# _7 cexplicitly or otherwise, but showing only evidence that favours your7 f; @6 f: Y* J; Y
argument is hardly good science or journalism. Such an article in a journal
( S F0 Q, \) z4 f W0 ^such as Nature is not an appropriate example of how scientific research or/ w( ~6 {* `( M* ^+ B- W% |
reporting should be done. |
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