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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. L. M9 n/ \7 n8 g
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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( H4 }& L/ d8 N/ U) \0 Rhttp://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html
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2 ~& G% L3 b# l" A: HFROM LAI JIANG, Department of Chemistry, University of Pennsylvania; }7 G A" a, x+ N/ Z
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It is a shame to see Nature — which nearly all scientists, including myself: U# b; M( H+ Z/ j( ?" m
, regard as one of the most prestigious and influential physical-science, H4 r7 K) h2 w/ V! j z
magazines — publish a thinly veiled biased article like this. Granted, this
: E7 Y6 O2 L' {. B8 xis not a peer-reviewed scientific article and did not go through the
# j2 X$ x* @, o6 L9 zscrutiny of picking referees. But to serve as a channel for the general
# D, x/ ^/ U; J0 h# U, qpopulace to be in touch with and appreciate science, the authors and editors) _( R% }1 ]# G, q+ e7 v
should at least present the readers with facts within the proper context,0 w9 D3 G ?, z _
which they blatantly failed to do.
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First, to identify Ye’s performance increase, Ewen Callaway compared her
1 k" }4 F6 o* \; wOlympic 400-metre IM time with her performance at the World Championships in9 Y& @( v8 W- k$ p8 Q
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “3 g; s7 d! O. _7 i) z4 D; z8 [$ \
anomalous” improvement of around 7 seconds (6.72 s). In fact, her previous
" z5 x L( {2 h) d, u) ]9 `' opersonal best was 4:33.79 at the Asian Games in 2010. This leads to an
5 m$ v/ A! e+ h+ y& s: _improvement of 5.38 seconds. In a sporting event in which 0.1 s can be the! A8 A, K0 e8 N* v- t9 _
difference between the gold and silver medal, I see no reason for 5.38 s to3 p/ l- A# v: i
be treated as 7 s.' K1 f0 P' O* c1 D$ I
9 k- M+ o- }- q& d* @' ^3 SSecond, as previously pointed out, Ye is only 16 years old and her body is
/ d# z% h/ p* n& O4 l9 nstill developing. Bettering oneself by 5 seconds over two years may seem
2 \: M! Z9 t8 z: cimpossible for an adult swimmer, but it certainly happens among youngsters.8 w f4 m; f+ l* e; k
An interview with Australian gold medallist Ian Thorpe revealed that his 4008 V" N, Q% {0 }# t
-metre freestyle time improved by 5 seconds between the ages of 15 and 16.: I" C* R- _! {9 R
For regular people, including Callaway, it may be hard to imagine what an2 ^2 T, ^4 T6 G
elite swimmer can achieve as he or she matures and undergoes scientific and7 ^2 }! ~, R. o
persistent training. But jumping to the conclusion that it is “anomalous”3 Z' S* t$ p) y7 I; y7 x6 y0 b
based on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.9 I1 ~' v- Q& V* E V6 ]# v
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Third, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook
3 ~' n2 }9 c) i U2 n, `" S. Texample of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in# e; D" [& K& |5 ^3 ^% U$ h( V
the last 50 metres, but Lochte had a huge lead in the first 300 metres, so( r' ^0 Z# r* `; m9 a' Y$ {
he chose not to push himself too hard and to conserve his energy for later+ s0 U1 v! ^; B, S( M5 E4 I
events (whether this conforms to the Olympic spirit and the ‘use one’s& ?& r$ |$ I, F: O2 i! |
best efforts to win a match’ requirement that the Badminton World; f2 u1 t. c: F' k9 x
Federation recently invoked to disqualify four badminton pairs is another$ O* Y7 y. I/ Q* y
topic worth discussing, though probably not in Nature). Ye, on the other
/ z0 y, Q3 z1 t6 y1 M5 xhand, was trailing behind after the first 300 metres and relied on freestyle
( F3 ^3 c4 \! [3 j, u) Y+ ^, in which she has an edge, to win the race. Failing to mention this0 @0 [5 u6 L, f( K
strategic difference, as well as the fact that Lochte is 23.25 seconds0 ]3 w) X3 e& u5 U% B
faster (4:05.18) than Ye overall, creates the illusion that a woman swam8 B+ d j6 D. l4 f1 Z" Z
faster than the best man in the same sport, which sounds impossible. Putting* Y( E! B5 U1 h7 ^7 N
aside the gender argument, I believe this is still a leading question that
. g2 Q. Q/ h0 C; wimplies to the reader that there is something fishy going on.
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1 f7 C9 m# Z& p$ q6 kFourth is another example of cherry-picking. In the same event, there are. [/ ^( @1 h8 \, O$ _
four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93% j; m- h. q- d5 Z# _
s) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s
( a' k% K. k6 c; X- j), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns9 F- I& p) o/ P" ^& J( T
out, if we are just talking about the last 50 metres in a 400-metre IM,+ ]5 m4 E! B( |2 @1 j% L+ N
Lochter is not the example I would have used if I were the author. What kind, e9 h( u; Q( t2 ~. R9 a; I- X$ O
of scientific rigorousness is Callaway trying to demonstrate here? Is it
0 N! ^* e# i* x( _ Klogical that if Lochter is the champion, we should assume that he leads in+ i+ h+ s/ W2 r9 ~( J! |! l# @5 }
every split? That would be a terrible way to teach the public how science
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Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and& c& }- D9 X7 V3 r+ J
implies that a drug test cannot rule out the possibility of doping. Is this
! c" y. z7 U, h% }6 Q1 E2 U+ ?kind of agnosticism what Nature really wants to teach its readers? By that
. H; A b8 s- H* H9 cstandard, I estimate that at least half of the peer-reviewed scientific
1 R3 [% d/ P( _4 a+ P apapers in Nature should be retracted. How can one convince the editors and
# f, q% M; F9 U- P9 ]reviewers that their proposed theory works for every possible case? One
, O& U: T6 l1 `; Y2 Kcannot. One chooses to apply the theory to typical examples and to
6 y: t; s+ N( S e; E4 Ademonstrate that in (hopefully) all scenarios considered, the theory works
( U$ a/ g2 e$ E1 qto a degree, and that that should warrant publication until a counterexample
& A$ C* {) L+ j* O& i& c1 xis found. I could imagine that Callaway has a sceptical mind, which is0 e( H6 E" I' Q( [
crucial to scientific thinking, but that would be put to better use if he* M! `" l; j( l9 B* j
wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly
0 [9 @# c8 k7 W6 v2 ~: w' Xadvanced, non-detectable drug that the Chinese have come up with in the
. B+ t: j8 Z U' w! Y! F: X2 Lpast 4 years (they obviously did not have it in Beijing, otherwise why not
* V5 d$ Y7 h7 U y: muse it and woo the audience at home?), based on data and rational derivation: r4 q X- ?4 {& Q
. This article, however, can be interpreted as saying that all athletes are# a) a. G, P& k8 h' c0 W
doping and the authorities are just not good enough to catch them. That may0 s5 F" N; G+ d- P/ x$ X
be true, logically, but definitely will not make the case if there is ever a1 |$ X# L- U& n9 D+ m( I7 e
hearing by the governing body for water sports, FINA, to determine if Ye
# K( [7 h. d8 O& y5 n: M N! whas doped. To ask whether it is possible to obtain a false negative in a
: m+ @* ~$ N6 n% Udrug test looks like a rigged question to me. Of course it is possible:
2 w G) P( j' A9 fother than the athlete taking a drug that the test is not designed to detect
2 M$ k4 w- m1 k# s5 ], anyone who has taken quantum 101 will tell you that everything is
* R3 i/ ~5 |$ n8 g$ F" f' y8 dprobabilistic in nature, and so there is a probability that the drug in an
, A8 o5 d; U$ x' g; l4 {4 Eathlete’s system could tunnel out right at the moment of the test. A slight" @5 B2 Q5 ?$ O% s
chance it may be, but should we disregard all test results because of it?4 ?4 D# r. r- C' P( _( J
Let’s be practical and reasonable, and accept that the World Anti-Doping& l4 x$ _; ~) E
agency (WADA) is competent at its job. Ye’s urine sample will be stored for9 L, R+ W. j! B, ]7 l" q- m1 ~0 d2 ]
eight years after the contest for future testing as technology advances.
/ u* \$ X& l$ ~; tInnocent until proven guilty, shouldn’t it be?
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Sixth, and the last point I would like to make, is that the out-of-+ z4 j: l& n/ J5 E
competition drug test is already in effect, which Callaway failed to mention' w+ j0 P) l5 S7 f7 J$ ~
. As noted in the president of WADA’s press release, drug testing for1 {& p" I' ]- G4 b2 M$ q
Olympians began at least six months before the opening of the London
9 \& S; q. l& P5 J+ GOlympics. Furthermore, 107 athletes have been banned from this Olympics for( Q& c) g; x) l+ m" ~
doping. That may be the reason that “everyone will pass at the Olympic
+ ?2 b* t3 n8 F. l$ J8 M7 `6 G3 ~games. Hardly anyone fails in competition testing” — those who did dope' d0 l# r C" N. \0 `! t
have already been caught and sanctioned. Callaway is free to suggest that a/ j3 K7 `1 x/ X8 _
player could have doped beforehand and fooled the test at the game, but this
0 N: L3 i% g( _8 rpossibility is certainly ruled out for Ye.# @& V! L5 \) v% S) U: u: s6 X
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Over all, even though Callaway did not falsify any data, he did (
8 D" t* d4 a9 l3 B) F8 Eintentionally or not) cherry-pick data that, in my view, are far too
, k4 w: S/ b; x' r8 U( nsuggestive to be fair and unbiased. If you want to cover a story of a
" v- J) [0 ]+ O7 N8 E" A7 b \suspected doping from a scientific point of view, be impartial and provide
' h; j |8 @2 v9 V- W8 Yall the facts for the reader to judge. You are entitled to your
* I& Y; L: E& g; cinterpretation of the facts, and the expression thereof in your piece,
& H& Z2 o" y# L- Fexplicitly or otherwise, but showing only evidence that favours your" s, I0 ^" ]" k; `! {2 N7 s
argument is hardly good science or journalism. Such an article in a journal1 s) h( X' ] }: a1 q$ t; s b
such as Nature is not an appropriate example of how scientific research or: R9 i, r) Q g$ h; I
reporting should be done. |
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