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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 e' m: x, b, D4 a. 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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0 l+ L. Q8 F2 k G( Ehttp://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html' g5 }/ h' p0 P9 t$ n& J$ K
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FROM LAI JIANG, Department of Chemistry, University of Pennsylvania
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It is a shame to see Nature — which nearly all scientists, including myself! e: \6 v0 E3 H/ \% `, Y
, regard as one of the most prestigious and influential physical-science9 h% |# R+ K8 J# ^0 J
magazines — publish a thinly veiled biased article like this. Granted, this
: t7 ?0 E% w$ ]$ S) r8 lis not a peer-reviewed scientific article and did not go through the
; Y; B; S6 F! `2 _' A9 t! Qscrutiny of picking referees. But to serve as a channel for the general C6 H; v+ P, p" i1 q# P3 E
populace to be in touch with and appreciate science, the authors and editors
' g$ }9 m1 V3 s* ~1 B5 }should at least present the readers with facts within the proper context,
) k( ]# o- i4 G$ @+ D8 B$ F* ]+ z* awhich they blatantly failed to do.; N" W/ t2 T* G% r2 ? q- L
& @. w5 b. h6 Q$ }6 b' x; g8 }1 }First, to identify Ye’s performance increase, Ewen Callaway compared her
: j+ Q0 c, r5 X8 _6 d5 Q% aOlympic 400-metre IM time with her performance at the World Championships in/ U& j" M# o/ p
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “# c: u0 m y+ a# v9 q
anomalous” improvement of around 7 seconds (6.72 s). In fact, her previous. X; q, ?, Q3 W+ B2 M
personal best was 4:33.79 at the Asian Games in 2010. This leads to an
. h1 l& `" w$ M+ E, J. E' \; kimprovement of 5.38 seconds. In a sporting event in which 0.1 s can be the
4 [/ Z$ S+ z/ Z" f5 pdifference between the gold and silver medal, I see no reason for 5.38 s to/ y8 Q# D J9 U5 W) l& V
be treated as 7 s.# J3 z3 c. o- {% g
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Second, as previously pointed out, Ye is only 16 years old and her body is! Y' ?: b: A8 B2 s, |
still developing. Bettering oneself by 5 seconds over two years may seem9 c/ k; Q& M& a
impossible for an adult swimmer, but it certainly happens among youngsters.
1 F/ m# h7 V7 P; VAn interview with Australian gold medallist Ian Thorpe revealed that his 400& d+ o, {. {4 P- _$ |) ^5 y( ~0 V
-metre freestyle time improved by 5 seconds between the ages of 15 and 16.
( n3 n/ T7 Y6 JFor regular people, including Callaway, it may be hard to imagine what an: K/ m/ L1 M0 `/ j6 A1 X
elite swimmer can achieve as he or she matures and undergoes scientific and
% f% D( n7 ?, D# wpersistent training. But jumping to the conclusion that it is “anomalous”
0 `4 j. t( e) A( u+ J3 gbased on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound. U* f( {, Y! E, E2 W$ U3 t9 }0 W
% E5 y* \% d6 [Third, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook
2 z9 n) ~! n/ | ~& ^' S: qexample of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in* n& Z% i* E" f. d
the last 50 metres, but Lochte had a huge lead in the first 300 metres, so
/ l4 n. |0 A/ q9 J; |* Y; f4 uhe chose not to push himself too hard and to conserve his energy for later
, T6 P; l4 x2 m5 Eevents (whether this conforms to the Olympic spirit and the ‘use one’s7 p% R4 `/ k+ }
best efforts to win a match’ requirement that the Badminton World6 ~* o7 _8 w, h- n. ^' h
Federation recently invoked to disqualify four badminton pairs is another
8 a" A9 Y# F3 j0 w8 X0 rtopic worth discussing, though probably not in Nature). Ye, on the other
& U" K; Z: V: Jhand, was trailing behind after the first 300 metres and relied on freestyle
) v$ ?9 _4 _; V, in which she has an edge, to win the race. Failing to mention this8 s" C# s; G$ k' Y) C2 }# f
strategic difference, as well as the fact that Lochte is 23.25 seconds
) C. Q1 ]1 Z4 b- Mfaster (4:05.18) than Ye overall, creates the illusion that a woman swam
/ ~2 U4 l- q* [- n4 L# `. Bfaster than the best man in the same sport, which sounds impossible. Putting6 k* {! o# O% _: T4 g1 g `7 G
aside the gender argument, I believe this is still a leading question that2 n, P; H0 p: I+ b# U
implies 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
8 x7 O1 e$ M \four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93
$ a; a3 @6 t: w; z9 O5 i( N& [s) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s
$ |' s$ e6 \5 L: w. v O3 d: @' E), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns+ Y; \) H8 y* J2 D9 l
out, if we are just talking about the last 50 metres in a 400-metre IM,+ Z; r/ F# P3 t7 P2 U
Lochter is not the example I would have used if I were the author. What kind; [) O' R( X7 Z. e% W
of scientific rigorousness is Callaway trying to demonstrate here? Is it
2 y' ?% z1 `& y1 Q* L1 Zlogical that if Lochter is the champion, we should assume that he leads in
5 O3 B3 ?6 c5 I: L, o+ F4 f2 S( ?" Fevery split? That would be a terrible way to teach the public how science0 ~4 c9 U" m0 R; M8 B
works.0 ?/ L! }2 t5 Q/ a0 |
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Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and
: |; }* p* B+ [implies that a drug test cannot rule out the possibility of doping. Is this
/ o: J+ }. R: }& K5 W2 u4 v; Gkind of agnosticism what Nature really wants to teach its readers? By that! C7 @% B( t; O' D7 Z
standard, I estimate that at least half of the peer-reviewed scientific: F. J3 ?% M) _; n
papers in Nature should be retracted. How can one convince the editors and
! W! F" W& a7 Q ^reviewers that their proposed theory works for every possible case? One
& H/ }% c* ~( Ncannot. One chooses to apply the theory to typical examples and to
! T! c0 m" o* G5 N5 q6 e1 Ydemonstrate that in (hopefully) all scenarios considered, the theory works
+ C# k' X! u' }/ x+ [6 i, wto a degree, and that that should warrant publication until a counterexample
: @, [$ l; j$ N+ E' U$ U/ bis found. I could imagine that Callaway has a sceptical mind, which is
# C; {; r% C. w* b8 `4 j& Bcrucial to scientific thinking, but that would be put to better use if he6 p) k/ Z6 T, _" K, v& F7 ] x9 w
wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly( \) p% K2 s4 ?7 J. Y5 ^4 `0 K
advanced, non-detectable drug that the Chinese have come up with in the5 q6 r) z: U: Q! L/ @$ o( c g
past 4 years (they obviously did not have it in Beijing, otherwise why not
4 c! C% o8 l+ z5 ause it and woo the audience at home?), based on data and rational derivation! O+ _' C9 t1 d
. This article, however, can be interpreted as saying that all athletes are
: u1 L X1 i5 r) e) Q- qdoping and the authorities are just not good enough to catch them. That may
$ m; P$ E8 f- P/ @$ Nbe true, logically, but definitely will not make the case if there is ever a) k8 r# } Y/ A+ O {' R
hearing by the governing body for water sports, FINA, to determine if Ye( z0 @& B/ i2 C U5 t7 P' v3 A' W
has doped. To ask whether it is possible to obtain a false negative in a8 q/ B4 V% c# J C: @
drug test looks like a rigged question to me. Of course it is possible:
/ Y( p' e8 W4 N0 k; Vother than the athlete taking a drug that the test is not designed to detect
* T$ j4 Q, v5 d* b3 `5 U" y0 N, anyone who has taken quantum 101 will tell you that everything is, c& P2 Z5 w/ U- t$ r& T
probabilistic in nature, and so there is a probability that the drug in an
5 A! j! y2 G& Q$ B: h. Mathlete’s system could tunnel out right at the moment of the test. A slight% E. r( l" G1 J1 J
chance it may be, but should we disregard all test results because of it?
6 Q |" x0 i3 Z# g6 sLet’s be practical and reasonable, and accept that the World Anti-Doping) O) E8 ~" f( A% U; r& w* G5 k
agency (WADA) is competent at its job. Ye’s urine sample will be stored for
" Z7 ^6 v& [- Z: aeight years after the contest for future testing as technology advances.. l+ K6 _- R( N K6 D
Innocent until proven guilty, shouldn’t it be?; D4 ~/ b$ H0 ~% R1 I/ C8 W- p
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Sixth, and the last point I would like to make, is that the out-of-5 U; Z" k f4 |# p) ~& E
competition drug test is already in effect, which Callaway failed to mention
8 K7 z3 c# J9 W( i! Z/ z2 @& Q+ y. As noted in the president of WADA’s press release, drug testing for
$ _1 J: x C9 F+ {, L% r, ]Olympians began at least six months before the opening of the London! ~8 ^2 a( ]+ W9 c6 j9 m# s
Olympics. Furthermore, 107 athletes have been banned from this Olympics for
8 F" o0 k$ c8 P. e$ Idoping. That may be the reason that “everyone will pass at the Olympic, u7 f3 j9 ?7 ]: g' H! a
games. Hardly anyone fails in competition testing” — those who did dope
* {$ V- H/ K8 ^4 _" @have already been caught and sanctioned. Callaway is free to suggest that a% v+ y$ u Z: C
player could have doped beforehand and fooled the test at the game, but this$ Z K$ ^$ o( t5 W% V) s2 `& j
possibility is certainly ruled out for Ye.
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9 R, e' S, S' K, z1 E3 N; T0 p! o# _8 tOver all, even though Callaway did not falsify any data, he did ( U e8 L, [0 h* i( g% z. t7 o U
intentionally or not) cherry-pick data that, in my view, are far too# a$ `8 o/ j0 Z- j+ [8 d2 n
suggestive to be fair and unbiased. If you want to cover a story of a4 y, [# p) \1 d8 O, b: b1 p6 B
suspected doping from a scientific point of view, be impartial and provide
# u$ d. o. U& [+ J9 n' lall the facts for the reader to judge. You are entitled to your8 r; A& g. o) ~1 Z; K5 W& C0 o% M8 L
interpretation of the facts, and the expression thereof in your piece,6 j8 D0 T) b3 \. c, c& C1 i# C
explicitly or otherwise, but showing only evidence that favours your
: E+ b9 ~: p& e0 |: m, Jargument is hardly good science or journalism. Such an article in a journal# l$ S; Q9 S2 d; U2 N. F% F$ q; a+ ?0 L
such as Nature is not an appropriate example of how scientific research or3 b/ s3 y+ V! Z
reporting should be done. |
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