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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
$ M4 c1 t9 J/ X4 K9 U" A6 n/ m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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http://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 myself
! ?2 {) }7 q' Q5 g s3 ^+ e, regard as one of the most prestigious and influential physical-science& |0 P" D w$ ^1 f
magazines — publish a thinly veiled biased article like this. Granted, this
* e* o4 W3 Y. `: z- m3 w5 ?9 y, \is not a peer-reviewed scientific article and did not go through the
( t2 S$ c4 D& W8 @scrutiny of picking referees. But to serve as a channel for the general
4 P: x4 u7 ?7 S9 E+ M- d/ Qpopulace to be in touch with and appreciate science, the authors and editors
2 L7 T. `9 N; m/ M4 M/ w! gshould at least present the readers with facts within the proper context,! n* q3 v( V2 _% h
which they blatantly failed to do.3 y; B& Y' m4 y) g% B
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First, to identify Ye’s performance increase, Ewen Callaway compared her
) l" L9 J* W/ Q" \: VOlympic 400-metre IM time with her performance at the World Championships in
& D8 P/ l8 X4 Y+ l: A, r2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “
- k3 f( Z5 L7 M+ e. T# kanomalous” improvement of around 7 seconds (6.72 s). In fact, her previous4 e9 @3 k. J9 d# E! R6 R0 J
personal best was 4:33.79 at the Asian Games in 2010. This leads to an5 K- Y7 c9 G( g3 a6 ]+ |2 G7 V% a
improvement of 5.38 seconds. In a sporting event in which 0.1 s can be the
Q) s5 R' K' c3 h$ Q) P2 ldifference between the gold and silver medal, I see no reason for 5.38 s to
+ o ?; f" b, y, G0 m. c5 obe treated as 7 s.
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6 E' u: X2 Y! O' ZSecond, as previously pointed out, Ye is only 16 years old and her body is' n" }7 ~* D: j0 ~, C, Q3 N( d
still developing. Bettering oneself by 5 seconds over two years may seem+ k" j6 ], g$ Y
impossible for an adult swimmer, but it certainly happens among youngsters.
h, D4 s: Y/ l5 G* _An interview with Australian gold medallist Ian Thorpe revealed that his 400
1 S3 x* _3 W: w3 A( c( d-metre freestyle time improved by 5 seconds between the ages of 15 and 16.
3 t# W$ Z1 z; t9 p$ b* SFor regular people, including Callaway, it may be hard to imagine what an
7 u( h* h; L+ C; Q" I3 Celite swimmer can achieve as he or she matures and undergoes scientific and, X( ] j6 M5 `3 W' v2 p; Q
persistent training. But jumping to the conclusion that it is “anomalous”# _* N% B5 t; D) M& `
based on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.
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8 s A) n ?9 e+ V2 TThird, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook
8 s& L0 V" S/ ^5 `7 rexample of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in
7 `5 z8 `: r0 ]4 ~% |: `/ {the last 50 metres, but Lochte had a huge lead in the first 300 metres, so1 a- I! E9 U, L- P
he chose not to push himself too hard and to conserve his energy for later1 `( K3 u* E7 \* m$ A% {0 }8 g7 @7 Q
events (whether this conforms to the Olympic spirit and the ‘use one’s& E+ x+ T* H- k3 `4 C
best efforts to win a match’ requirement that the Badminton World
2 m# c- K+ T' y5 nFederation recently invoked to disqualify four badminton pairs is another
! r, f- R! j* ?! Q: Z1 ytopic worth discussing, though probably not in Nature). Ye, on the other
: ~$ K, M; O- a. Q* Q. M' O7 u& y, Yhand, was trailing behind after the first 300 metres and relied on freestyle/ e& s8 T/ I; d( N
, in which she has an edge, to win the race. Failing to mention this
1 U' i* T/ N/ A' o* T8 S+ D! Z8 Sstrategic difference, as well as the fact that Lochte is 23.25 seconds
2 N; {, ~' i, r) \2 m: hfaster (4:05.18) than Ye overall, creates the illusion that a woman swam
9 F1 T6 J- y, b1 Qfaster than the best man in the same sport, which sounds impossible. Putting* b5 f0 Q8 M. Y5 J
aside the gender argument, I believe this is still a leading question that
3 p# a0 G. T) Gimplies to the reader that there is something fishy going on.1 q! h' s( z& @8 v# @5 _$ ^
8 } M8 ~$ L, V0 |+ D5 D( UFourth is another example of cherry-picking. In the same event, there are2 b4 ~( Q! Q- R' V) S" z
four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93
" B+ l% d c, `/ D/ {+ ~s) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s
, Q6 ]7 E- W) ?2 `3 W), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns
/ g7 ~ e4 q9 fout, if we are just talking about the last 50 metres in a 400-metre IM,
/ t! |" V* t% a/ `Lochter is not the example I would have used if I were the author. What kind5 X$ X; P7 p1 Z: U1 I3 X8 R
of scientific rigorousness is Callaway trying to demonstrate here? Is it' }, S0 E F, j6 o
logical that if Lochter is the champion, we should assume that he leads in; K. q+ }2 q4 z3 [& _/ y1 W' U. N
every split? That would be a terrible way to teach the public how science3 G' x& d, P) Q; A! z% }# B
works.
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Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and T: E& J# Q; P- u, o0 l: G
implies that a drug test cannot rule out the possibility of doping. Is this+ A6 t2 a6 o/ w# E4 l* [, L* I
kind of agnosticism what Nature really wants to teach its readers? By that, h: r+ y: K& h1 x0 G& M
standard, I estimate that at least half of the peer-reviewed scientific
/ Y% p- D9 ]$ n9 Z5 I4 @papers in Nature should be retracted. How can one convince the editors and
6 _9 Z. j0 G* P6 U5 U7 j& `6 \; U! ~reviewers that their proposed theory works for every possible case? One1 O; l/ d4 L* T5 ^5 z! u
cannot. One chooses to apply the theory to typical examples and to
& q4 h' H) I) G" Y/ z" odemonstrate that in (hopefully) all scenarios considered, the theory works3 w- q/ K( F0 M( P! F/ H: X
to a degree, and that that should warrant publication until a counterexample
$ q3 \ i* T( yis found. I could imagine that Callaway has a sceptical mind, which is
( a* K4 i6 C1 _+ ^; acrucial to scientific thinking, but that would be put to better use if he
3 B( L8 Q) w; ^1 U( uwrote a peer-reviewed paper that discussed the odds of Ye doping on a highly
4 p& h% o: X& @( y0 C7 J* d. ~8 Z4 Xadvanced, non-detectable drug that the Chinese have come up with in the$ U9 [' H3 r+ ~- w6 a9 i m
past 4 years (they obviously did not have it in Beijing, otherwise why not
* I4 @! V( D3 N2 D0 Euse it and woo the audience at home?), based on data and rational derivation/ }" k/ y4 [* ~: x: @8 M
. This article, however, can be interpreted as saying that all athletes are1 i- W( a9 R8 N" h" C# @5 G
doping and the authorities are just not good enough to catch them. That may
( K* v. V4 m% }) \/ \ vbe true, logically, but definitely will not make the case if there is ever a
5 Z" x( n; H- T$ o& N' T" Jhearing by the governing body for water sports, FINA, to determine if Ye
% h# t% E+ c5 H# ]! P, G6 y& mhas doped. To ask whether it is possible to obtain a false negative in a
0 Q4 @& Z% Z, l' Ndrug test looks like a rigged question to me. Of course it is possible:0 P* Z7 g# w- t7 [$ g, [0 y' |5 y
other than the athlete taking a drug that the test is not designed to detect
* F/ y! b& s0 x: l. Y% L, l/ z, anyone who has taken quantum 101 will tell you that everything is
" D* D" {( Q/ |, E$ Dprobabilistic in nature, and so there is a probability that the drug in an2 I7 S; z$ U2 t) y
athlete’s system could tunnel out right at the moment of the test. A slight
' y3 Y6 |5 ~+ }: j, F& V1 V2 ]' W8 wchance it may be, but should we disregard all test results because of it?
7 P Y6 D3 Q7 C9 L/ NLet’s be practical and reasonable, and accept that the World Anti-Doping
: V( O$ }) W2 z& T* k8 sagency (WADA) is competent at its job. Ye’s urine sample will be stored for4 N$ f' L( M M0 D: n
eight years after the contest for future testing as technology advances.
( W ]2 {* u$ `9 MInnocent until proven guilty, shouldn’t it be?
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- I1 y" G$ {9 M2 J$ jSixth, and the last point I would like to make, is that the out-of-% m [3 n2 \0 ^" }1 \1 ^0 E5 l
competition drug test is already in effect, which Callaway failed to mention
, Q" W/ n( A7 t6 ]. As noted in the president of WADA’s press release, drug testing for9 |9 H: `* ^) C
Olympians began at least six months before the opening of the London
7 _, [ |3 W v7 a" r% bOlympics. Furthermore, 107 athletes have been banned from this Olympics for4 g5 a; Z! m+ o& y
doping. That may be the reason that “everyone will pass at the Olympic
0 z% E5 b' ~- y/ V+ Vgames. Hardly anyone fails in competition testing” — those who did dope
+ N5 \* I5 r) J6 d& bhave already been caught and sanctioned. Callaway is free to suggest that a: |$ L7 p8 c& z$ ~- A4 s
player could have doped beforehand and fooled the test at the game, but this% h$ V7 R9 b$ N# e& N
possibility is certainly ruled out for Ye.( G4 W j, r$ L- D9 a1 R' u, b
& }8 S& C+ o) P7 C* }! x6 UOver all, even though Callaway did not falsify any data, he did (
' {) K4 Z% a7 o, U6 ^9 E$ Yintentionally or not) cherry-pick data that, in my view, are far too0 \: U B9 X3 G" Q4 j: e" d3 {
suggestive to be fair and unbiased. If you want to cover a story of a
3 I+ g, ~. f# ^( i- S/ X$ osuspected doping from a scientific point of view, be impartial and provide" I! g4 x$ k8 w1 U) ?
all the facts for the reader to judge. You are entitled to your, Z9 `& f9 S+ L% f6 E
interpretation of the facts, and the expression thereof in your piece,, y& F' T5 l* Q+ i; N' C0 s/ n
explicitly or otherwise, but showing only evidence that favours your: V# C6 o5 J; j' X) V
argument is hardly good science or journalism. Such an article in a journal) E b4 Y% w! A( x2 f; V0 j |
such as Nature is not an appropriate example of how scientific research or
' }7 f: j/ v) \reporting should be done. |
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