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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
) F; ?: B! h$ o" _& p; S5 O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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1 ~0 |5 {% A) I0 x: ohttp://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html3 x& u' p+ v# g' M& U" e% v5 w
0 H) Q z! q$ L2 LFROM LAI JIANG, Department of Chemistry, University of Pennsylvania2 T1 [% H5 T! j! D! m
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It is a shame to see Nature — which nearly all scientists, including myself
# u7 B, l3 ^) I3 V' ?, regard as one of the most prestigious and influential physical-science
" Y4 Y3 n& z- Lmagazines — publish a thinly veiled biased article like this. Granted, this2 f; M' \7 ~" b s) ^
is not a peer-reviewed scientific article and did not go through the
: ^7 H6 [* L, e1 P0 n4 G3 ?scrutiny of picking referees. But to serve as a channel for the general
/ N% P1 G; _: G1 y6 A/ Bpopulace to be in touch with and appreciate science, the authors and editors
$ u* F+ Y1 G# e5 `& V' m; P) ]should at least present the readers with facts within the proper context,! C3 }' k( Y/ Y6 a. K# }! ~
which they blatantly failed to do.
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First, to identify Ye’s performance increase, Ewen Callaway compared her
5 x1 a) y0 \ EOlympic 400-metre IM time with her performance at the World Championships in! B5 A# H3 }4 R4 R# K( J
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “/ v: O! k( r0 l5 ?
anomalous” improvement of around 7 seconds (6.72 s). In fact, her previous L/ y- r4 Y% |$ {# @
personal best was 4:33.79 at the Asian Games in 2010. This leads to an
5 { r( M4 {7 r# Pimprovement of 5.38 seconds. In a sporting event in which 0.1 s can be the
: G! x8 J2 p6 L) R9 X: i9 ddifference between the gold and silver medal, I see no reason for 5.38 s to
) E# g( H, Y5 Y# x3 |* xbe treated as 7 s.
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Second, as previously pointed out, Ye is only 16 years old and her body is
& L3 P; K! q8 y6 r/ p9 `: ^5 Gstill developing. Bettering oneself by 5 seconds over two years may seem
' r% @2 G# C2 G# ]# A' h1 ]$ I9 pimpossible for an adult swimmer, but it certainly happens among youngsters.
- F/ D& q* X* C3 Q& lAn interview with Australian gold medallist Ian Thorpe revealed that his 400
; M% f6 C& A, S% u4 p4 i) ^+ _-metre freestyle time improved by 5 seconds between the ages of 15 and 16.( P. Q* [: _9 q
For regular people, including Callaway, it may be hard to imagine what an
; i9 K9 V6 P9 Y/ N- |# ]: P; I6 Xelite swimmer can achieve as he or she matures and undergoes scientific and8 W* f2 [3 J, @) I
persistent training. But jumping to the conclusion that it is “anomalous”
$ A0 r1 O* i2 \% x8 s- W; jbased on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.$ o* ~6 H' a2 {* J6 c/ b
- D0 H# A3 x5 w* |2 BThird, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook- R ~ A2 n& n( l7 Y" `
example of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in* R, a- Q( m: G; w- I3 ]
the last 50 metres, but Lochte had a huge lead in the first 300 metres, so" t& i* |- V, U. c! E! i
he chose not to push himself too hard and to conserve his energy for later
7 g% u- J! _) Q Z# v0 n8 J$ Vevents (whether this conforms to the Olympic spirit and the ‘use one’s
: |- ?6 y9 X% r3 a3 W: Z( Obest efforts to win a match’ requirement that the Badminton World
. U9 a- M+ I$ g ], ?Federation recently invoked to disqualify four badminton pairs is another
, P z1 T3 @ g; H- X0 f- Atopic worth discussing, though probably not in Nature). Ye, on the other
2 @ b! M; z; E$ T" K' ]7 }. bhand, was trailing behind after the first 300 metres and relied on freestyle
7 c9 a5 q+ @ I. s0 X: ^, in which she has an edge, to win the race. Failing to mention this( Q/ `4 U- [: K# p$ Y8 ^, h+ Q4 x% Z
strategic difference, as well as the fact that Lochte is 23.25 seconds
2 w2 V: t: l9 ]( {% l; |faster (4:05.18) than Ye overall, creates the illusion that a woman swam
, c" _5 L, x2 v0 p3 ?faster than the best man in the same sport, which sounds impossible. Putting. |1 Z: Z6 v! Q( G7 J
aside the gender argument, I believe this is still a leading question that
6 f; M0 ]6 E+ J1 |& x8 k& L# }. gimplies to the reader that there is something fishy going on.
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8 l/ j$ M6 f' J/ {0 Q6 \- LFourth is another example of cherry-picking. In the same event, there are
* A, s' Q/ W! ]" x3 B9 {3 u. }6 Pfour male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93
( [. ^ V$ q f- G0 es) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s9 m- S# j* x: P3 T$ j+ I; L
), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns
( A2 ~/ Q9 @' u+ U* N, P" {& H; Bout, if we are just talking about the last 50 metres in a 400-metre IM,
3 [6 I$ I) v, r3 b3 |9 [, ~Lochter is not the example I would have used if I were the author. What kind0 G6 {# p& m6 q9 X4 Q
of scientific rigorousness is Callaway trying to demonstrate here? Is it
& U! z7 W2 ^$ s) O6 i7 {/ z' L5 @logical that if Lochter is the champion, we should assume that he leads in
" E2 F) N+ D# c }% hevery split? That would be a terrible way to teach the public how science
* \0 y& y8 t1 i: n; Yworks.- B) y0 E$ l& q# p Z. [ e1 o! {- D
0 `( w; V" a; c# UFifth is the issue I oppose the most. Callaway quotes Ross Tucker and% o4 x) o0 s: }" l
implies that a drug test cannot rule out the possibility of doping. Is this" j% R) C9 A; l" J& f2 P7 P5 h. G& K
kind of agnosticism what Nature really wants to teach its readers? By that
+ p$ Q+ C. B8 D% tstandard, I estimate that at least half of the peer-reviewed scientific
+ i, V1 \, o* z |" e0 n* Opapers in Nature should be retracted. How can one convince the editors and
4 q& ^+ ?4 U' l+ q! F6 Jreviewers that their proposed theory works for every possible case? One; k4 P2 E3 G" c9 L! s) A: C
cannot. One chooses to apply the theory to typical examples and to
. ]5 T% q9 o$ f, `demonstrate that in (hopefully) all scenarios considered, the theory works. ~. K/ I8 H( ~
to a degree, and that that should warrant publication until a counterexample+ a$ Q$ m$ J8 n- i! p2 [2 k% k
is found. I could imagine that Callaway has a sceptical mind, which is
4 B7 H# J* F* g+ P# J0 Q1 l! {crucial to scientific thinking, but that would be put to better use if he- E/ |0 |, T( m: i+ [; b
wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly
0 {4 }1 _$ [! \$ w/ f' Q. ~. h. e% _* gadvanced, non-detectable drug that the Chinese have come up with in the
9 ~) s* E* M \past 4 years (they obviously did not have it in Beijing, otherwise why not1 s8 T1 W; W0 r; Y* q
use it and woo the audience at home?), based on data and rational derivation5 [, V! d( \9 p4 ^% F
. This article, however, can be interpreted as saying that all athletes are9 T3 A- G0 j% X; H; h# L; f" s
doping and the authorities are just not good enough to catch them. That may
4 _. [6 \. \( y5 G$ e7 ]be true, logically, but definitely will not make the case if there is ever a
( Y. X4 ?9 X( Phearing by the governing body for water sports, FINA, to determine if Ye
, N0 ]1 d( B* q! `* l, @) Mhas doped. To ask whether it is possible to obtain a false negative in a X" V5 f. S+ N8 H6 t1 V+ o) [
drug test looks like a rigged question to me. Of course it is possible:
7 \ k7 b, o$ D. a# X1 Xother than the athlete taking a drug that the test is not designed to detect
# k1 Q% S. X- A6 n, anyone who has taken quantum 101 will tell you that everything is8 Z# ?, e: I3 U
probabilistic in nature, and so there is a probability that the drug in an
O9 e1 p9 ^# P. M% N$ tathlete’s system could tunnel out right at the moment of the test. A slight, @/ h& ^9 b7 d1 l
chance it may be, but should we disregard all test results because of it?
; P* u4 b& Y) e$ `; ^+ {Let’s be practical and reasonable, and accept that the World Anti-Doping
9 i* t/ u# X! y* K3 w: C yagency (WADA) is competent at its job. Ye’s urine sample will be stored for# X) C2 f1 P% J1 i
eight years after the contest for future testing as technology advances.
8 }2 @; D0 o% P$ F) A" G3 @( h( ?Innocent until proven guilty, shouldn’t it be?8 r- ~ R; D# B+ I! d! O4 I
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Sixth, and the last point I would like to make, is that the out-of-
3 P1 R' h- ?3 D- A0 a4 S( P- kcompetition drug test is already in effect, which Callaway failed to mention Y7 J0 o7 D0 i5 l8 l
. As noted in the president of WADA’s press release, drug testing for( }, ^9 ^" @+ E1 S, R
Olympians began at least six months before the opening of the London; G7 o$ ?* G6 y7 U) i& u" ]
Olympics. Furthermore, 107 athletes have been banned from this Olympics for
2 \0 \1 g& ~3 {+ z; y! Udoping. That may be the reason that “everyone will pass at the Olympic' C, c5 q i( H: P! h4 W8 G
games. Hardly anyone fails in competition testing” — those who did dope
7 c6 Q4 E. v* j; X4 [& ahave already been caught and sanctioned. Callaway is free to suggest that a/ L) _& C- L& `. b' n; k4 C- U
player could have doped beforehand and fooled the test at the game, but this
, K2 Z/ q! \0 d: ipossibility is certainly ruled out for Ye.
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9 @4 P8 \' D' MOver all, even though Callaway did not falsify any data, he did (
9 `( g8 W: \& M0 a3 h' Xintentionally or not) cherry-pick data that, in my view, are far too
9 f& X& ^& ^% n$ H# M; W- [& usuggestive to be fair and unbiased. If you want to cover a story of a
5 y6 s" l. t4 f# E$ _0 Wsuspected doping from a scientific point of view, be impartial and provide
; D& f6 S' \% S6 _! A( oall the facts for the reader to judge. You are entitled to your0 d) L( i# w5 S( \7 i# k
interpretation of the facts, and the expression thereof in your piece,
8 Y9 T) @( M/ f7 u$ I$ g4 wexplicitly or otherwise, but showing only evidence that favours your# w( @5 c) @# [6 n( d
argument is hardly good science or journalism. Such an article in a journal, v' }4 r a: x; l! N: `
such as Nature is not an appropriate example of how scientific research or P) q! e5 p* x" _5 `
reporting should be done. |
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