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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
. {. R0 q/ G% _4 M+ r6 ?4 \8 s1 o5 ^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$ M; }; I4 L1 k. khttp://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html
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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 myself0 `, j5 [9 d7 I+ y) q$ \
, regard as one of the most prestigious and influential physical-science' C+ E) d2 c' i# n0 T2 s
magazines — publish a thinly veiled biased article like this. Granted, this1 m( E" q0 D& _4 r' ~$ q! o
is not a peer-reviewed scientific article and did not go through the
1 F8 d' l* ~( Fscrutiny of picking referees. But to serve as a channel for the general
8 L; |% I6 m9 D) f* P! H7 @populace to be in touch with and appreciate science, the authors and editors
' `9 W% a) X/ A- _$ ]3 V$ v: dshould at least present the readers with facts within the proper context,
7 e5 x' D6 Z* f" U$ }which they blatantly failed to do.
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1 }' e3 {* f4 z2 Q4 nFirst, to identify Ye’s performance increase, Ewen Callaway compared her7 g' X0 {$ R0 a# Z0 o
Olympic 400-metre IM time with her performance at the World Championships in B1 `( g. a9 n9 A6 `
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “
' V u7 ~0 p% @! _' B' U. r U5 [5 Panomalous” improvement of around 7 seconds (6.72 s). In fact, her previous% _4 U3 S8 Z8 L5 W' ]& t2 V
personal best was 4:33.79 at the Asian Games in 2010. This leads to an
2 b, E2 M+ e$ \improvement of 5.38 seconds. In a sporting event in which 0.1 s can be the
6 m0 S+ m4 s2 Q' a& E0 I$ udifference between the gold and silver medal, I see no reason for 5.38 s to
8 g z+ F+ g% z: N5 q0 a1 [% b" ebe treated as 7 s.3 J0 z# b$ y" d7 U+ u- S
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Second, as previously pointed out, Ye is only 16 years old and her body is
2 X4 ^; d: ]$ Gstill developing. Bettering oneself by 5 seconds over two years may seem6 V5 Y3 o! S0 q, V) Q" P2 t
impossible for an adult swimmer, but it certainly happens among youngsters.
* f. [& b) g$ p+ eAn interview with Australian gold medallist Ian Thorpe revealed that his 400+ e5 t) n! d2 a4 y
-metre freestyle time improved by 5 seconds between the ages of 15 and 16.% F1 x O- k5 E7 ]1 W
For regular people, including Callaway, it may be hard to imagine what an3 z2 _5 p) E* m- j! V
elite swimmer can achieve as he or she matures and undergoes scientific and z1 S# |/ q: P, v+ b J
persistent training. But jumping to the conclusion that it is “anomalous”
4 T7 i8 X& a% ybased on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.9 c) P9 |) T* l; J" H
" p, V [1 Z- c* k" I" P9 VThird, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook
) z8 g- I2 T# W$ `example of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in c3 ^% x" ~! l9 ?
the last 50 metres, but Lochte had a huge lead in the first 300 metres, so
# s) B* E" l {6 J3 F) _he chose not to push himself too hard and to conserve his energy for later7 M! F* m0 A Q0 k6 [: b0 Z
events (whether this conforms to the Olympic spirit and the ‘use one’s/ m* i; l$ m D% }
best efforts to win a match’ requirement that the Badminton World* l! a d5 H, `" v r
Federation recently invoked to disqualify four badminton pairs is another" V6 Y5 W6 }$ I, s- P
topic worth discussing, though probably not in Nature). Ye, on the other
6 f$ ^! Z9 [% L# P1 S2 \5 whand, was trailing behind after the first 300 metres and relied on freestyle
2 [1 T* n: M G1 e$ ~0 x, in which she has an edge, to win the race. Failing to mention this8 z3 _" n. F9 A; Z% [
strategic difference, as well as the fact that Lochte is 23.25 seconds
- c/ p# h7 o( q1 {) t" M4 cfaster (4:05.18) than Ye overall, creates the illusion that a woman swam1 u( N; R4 D7 X+ i5 T
faster than the best man in the same sport, which sounds impossible. Putting0 H4 L/ P* b9 K# F
aside the gender argument, I believe this is still a leading question that
- t# j$ W6 n& S) r: L4 cimplies to the reader that there is something fishy going on.9 L6 y( }! |2 h; |, i, h, x0 l
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Fourth is another example of cherry-picking. In the same event, there are
7 @% L" R! Q7 V/ Q$ F) Q) m7 {four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93
0 h; ^- K- R$ t9 M5 k% S& ], Bs) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s! |' c" M4 O8 P3 t7 D
), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns
r& ^0 s4 j) W: T6 ?: j2 J2 Vout, if we are just talking about the last 50 metres in a 400-metre IM,6 j8 p' R* g1 F/ {) U4 J) t
Lochter is not the example I would have used if I were the author. What kind
, C. }( I6 f6 Fof scientific rigorousness is Callaway trying to demonstrate here? Is it
6 B! Y7 [: z, C# alogical that if Lochter is the champion, we should assume that he leads in- D8 I `+ {4 L+ Q$ d) Q
every split? That would be a terrible way to teach the public how science' R% O' J, z: M
works.
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Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and T# T8 {$ Z; y- B
implies that a drug test cannot rule out the possibility of doping. Is this
; W3 D2 u7 s9 u' S; J! G) |# Ykind of agnosticism what Nature really wants to teach its readers? By that: k" q4 q& ^3 [1 e+ `6 D
standard, I estimate that at least half of the peer-reviewed scientific
# G) t; D, D/ |. C) Spapers in Nature should be retracted. How can one convince the editors and) h8 y" B9 j! ]) x" K+ ~
reviewers that their proposed theory works for every possible case? One
& [+ U+ {$ k8 \ y7 b- L. [cannot. One chooses to apply the theory to typical examples and to9 ]2 b7 r1 m+ k% C' v
demonstrate that in (hopefully) all scenarios considered, the theory works
' ]/ X" \7 r# A0 ?5 vto a degree, and that that should warrant publication until a counterexample
) b* Y6 Q& b- L" K( ]/ _9 sis found. I could imagine that Callaway has a sceptical mind, which is: {( E, g9 Y! t# k& p; g
crucial to scientific thinking, but that would be put to better use if he) J! M1 t: M. d7 z( @: v
wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly& G1 z) e: S/ R5 ^
advanced, non-detectable drug that the Chinese have come up with in the
) [- t) e: F5 I: i/ Opast 4 years (they obviously did not have it in Beijing, otherwise why not
! h4 P! V+ S6 f* y7 a# {use it and woo the audience at home?), based on data and rational derivation1 I7 e0 T) A8 b/ }
. This article, however, can be interpreted as saying that all athletes are
( ^! K1 s) e! G8 `doping and the authorities are just not good enough to catch them. That may
& Z* Z" d B0 v" X; r4 obe true, logically, but definitely will not make the case if there is ever a7 X0 E2 B7 \+ ?
hearing by the governing body for water sports, FINA, to determine if Ye
' R5 s- {9 I" ^( @6 X* C# @3 @1 Ohas doped. To ask whether it is possible to obtain a false negative in a9 x$ R3 f- h% u: N" H
drug test looks like a rigged question to me. Of course it is possible:
% O; L4 f+ U& m' `other than the athlete taking a drug that the test is not designed to detect" z. q+ F. W; P3 R) V% s' C
, anyone who has taken quantum 101 will tell you that everything is
8 _* {' J W% u7 `0 s5 U% j7 nprobabilistic in nature, and so there is a probability that the drug in an( y+ S/ p% o4 z0 T" x
athlete’s system could tunnel out right at the moment of the test. A slight0 [) t i1 i; p/ X
chance it may be, but should we disregard all test results because of it?
1 [ z5 A# `1 j! }Let’s be practical and reasonable, and accept that the World Anti-Doping2 F5 `* [/ [/ ^
agency (WADA) is competent at its job. Ye’s urine sample will be stored for
" L5 F3 \+ K8 S' b1 j2 b( I0 P* ueight years after the contest for future testing as technology advances." u0 m$ K# q& x( j
Innocent until proven guilty, shouldn’t it be?1 O+ `) m F r4 E* z8 s" _) N% }: ~
4 R4 N5 D# \( D/ F" B7 c; b) iSixth, and the last point I would like to make, is that the out-of-
" i# }2 k1 e+ i" a' u$ ecompetition drug test is already in effect, which Callaway failed to mention" r; J: G' e j+ s2 u5 |' i
. As noted in the president of WADA’s press release, drug testing for
8 y" _ J( I% P8 e2 ?Olympians began at least six months before the opening of the London2 t3 K! J/ ?, K+ u
Olympics. Furthermore, 107 athletes have been banned from this Olympics for
$ Z8 n- Z9 R, z. S0 bdoping. That may be the reason that “everyone will pass at the Olympic' ]: o q# S2 {# @; n b1 q* r/ ]8 N
games. Hardly anyone fails in competition testing” — those who did dope% [) a2 N5 {8 y. Y I* _: D
have already been caught and sanctioned. Callaway is free to suggest that a
) y2 ?- M) y0 p, T- k& C8 `player could have doped beforehand and fooled the test at the game, but this2 }+ m5 K2 M& z/ ?
possibility is certainly ruled out for Ye.% ~3 o: Q$ Z8 ~$ P
3 ?; }5 Z6 W: z% @9 E9 ~: OOver all, even though Callaway did not falsify any data, he did (
I6 k7 b4 b5 W2 t8 u& Qintentionally or not) cherry-pick data that, in my view, are far too1 N" j" b6 D8 M( v3 f4 u* Y
suggestive to be fair and unbiased. If you want to cover a story of a
1 A5 P2 I# Z3 x" N5 nsuspected doping from a scientific point of view, be impartial and provide/ {4 ?) t) U& c% |8 ^9 M) T
all the facts for the reader to judge. You are entitled to your& ?, R1 `8 b s- G4 } @1 Y# O
interpretation of the facts, and the expression thereof in your piece,
; {0 X0 T. s3 _& R& Qexplicitly or otherwise, but showing only evidence that favours your& t9 P* z, e) s0 W+ q% t
argument is hardly good science or journalism. Such an article in a journal
6 s. r+ j+ k- ?such as Nature is not an appropriate example of how scientific research or
( B" U# m2 E7 ~6 c6 Hreporting should be done. |
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