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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
) C/ f: X$ u Z/ _5 W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( h; b* l) L8 F# T
" O- x; B7 B, y4 Z8 }FROM LAI JIANG, Department of Chemistry, University of Pennsylvania
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1 L- |# ]9 C+ D% H) \/ ]It is a shame to see Nature — which nearly all scientists, including myself
! X. i! l4 i! B9 B: F. }6 ~4 A, regard as one of the most prestigious and influential physical-science ` G T7 p' t7 P" T" P% O
magazines — publish a thinly veiled biased article like this. Granted, this
' _. X$ @& {, b2 S, Ris not a peer-reviewed scientific article and did not go through the& Z& A+ C, E- S! p( _- B% ^% F+ Q
scrutiny of picking referees. But to serve as a channel for the general
$ [0 D8 }! O4 s: Y& ~" ?/ `populace to be in touch with and appreciate science, the authors and editors
A9 A* C% g# H3 ]1 u( T9 Lshould at least present the readers with facts within the proper context,
Y8 H, x0 V. s. Gwhich they blatantly failed to do.
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6 S# m; f, V; N8 K5 lFirst, to identify Ye’s performance increase, Ewen Callaway compared her
+ g$ T |! B/ D$ g% d: J# T4 ~: QOlympic 400-metre IM time with her performance at the World Championships in
2 A# h* j( H3 {5 W" e7 X2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “) S g; N8 G1 S
anomalous” improvement of around 7 seconds (6.72 s). In fact, her previous
6 l. H3 |& H: P+ Hpersonal best was 4:33.79 at the Asian Games in 2010. This leads to an
2 _6 W' E) u" g1 k# h: }improvement of 5.38 seconds. In a sporting event in which 0.1 s can be the- h( z9 f: y" u# t" d# J
difference between the gold and silver medal, I see no reason for 5.38 s to
6 A5 d& O- J; h/ Kbe treated as 7 s.
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. G' I1 f2 r) g: v) WSecond, as previously pointed out, Ye is only 16 years old and her body is
1 D/ A }9 C/ [ Kstill developing. Bettering oneself by 5 seconds over two years may seem
' e# `; @4 ~" c2 Yimpossible for an adult swimmer, but it certainly happens among youngsters.
. z% D- d1 C3 U5 AAn interview with Australian gold medallist Ian Thorpe revealed that his 400
, s: C1 M9 q0 I" W) x' M% _: U" ~-metre freestyle time improved by 5 seconds between the ages of 15 and 16.+ g V" x* e$ M( [! `
For regular people, including Callaway, it may be hard to imagine what an( [6 H5 k. o) {/ v8 v( A7 ~- k6 P
elite swimmer can achieve as he or she matures and undergoes scientific and
( c* N% d9 ]5 E3 v" q9 ?- @persistent training. But jumping to the conclusion that it is “anomalous”
9 D3 o' J. F9 J, c2 O+ O' \! zbased on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.
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# K$ n6 i1 \7 p# n! m& MThird, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook7 d# v% t5 ^0 o
example of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in# `1 H2 t2 L1 p. v
the last 50 metres, but Lochte had a huge lead in the first 300 metres, so$ G: R a6 v* F9 s6 F( r, v7 N
he chose not to push himself too hard and to conserve his energy for later# j. x3 V1 J) q6 u
events (whether this conforms to the Olympic spirit and the ‘use one’s9 p6 F/ A* W c
best efforts to win a match’ requirement that the Badminton World
0 z( U( F8 i# m+ r4 Q5 `: }Federation recently invoked to disqualify four badminton pairs is another# }! I$ ^- U2 w- M3 x$ U
topic worth discussing, though probably not in Nature). Ye, on the other* R9 b9 I" Y- X x( o' X" Z
hand, was trailing behind after the first 300 metres and relied on freestyle
* L5 W+ k. |, q/ f$ n M, in which she has an edge, to win the race. Failing to mention this
7 P5 e5 p' {3 F0 x% Y5 q- g: P, gstrategic difference, as well as the fact that Lochte is 23.25 seconds# }/ h, p$ Z4 ]+ \& T5 \8 }9 R, `
faster (4:05.18) than Ye overall, creates the illusion that a woman swam
4 c: s8 @& Q0 pfaster than the best man in the same sport, which sounds impossible. Putting! }- E% H) c1 J6 r) E$ [3 C/ L! y( u Z
aside the gender argument, I believe this is still a leading question that2 `% ]( {- p) Y2 m6 h8 @! A
implies to the reader that there is something fishy going on.: a9 g1 F# h. l$ O; @; ^' i
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Fourth is another example of cherry-picking. In the same event, there are
+ F* o) k! k) J% F2 Z6 f/ Hfour male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93
) o6 A: [- t8 e0 H V& x) N- n& ws) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s2 B* n" C7 x. Q I/ H9 C
), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns
' a- y, n& v& G% I q- p( U; E6 xout, if we are just talking about the last 50 metres in a 400-metre IM,
+ L, p n: R/ O; P: {! ALochter is not the example I would have used if I were the author. What kind
# S: C! `; j( D! H( _of scientific rigorousness is Callaway trying to demonstrate here? Is it) r* i7 n) N" m p8 P& |1 p) z
logical that if Lochter is the champion, we should assume that he leads in
; M( P8 o) d( O8 s! o8 Z" Cevery split? That would be a terrible way to teach the public how science6 L' E4 L; Y5 h& {
works.
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0 `& O" z, X/ o% T* P& PFifth is the issue I oppose the most. Callaway quotes Ross Tucker and
5 f- ? P' n% h* w" v6 u( p( E7 @8 vimplies that a drug test cannot rule out the possibility of doping. Is this: [# o( f, e$ E8 X! N* A9 ]" ?7 h
kind of agnosticism what Nature really wants to teach its readers? By that X( d9 \8 O o6 Z1 ]- t
standard, I estimate that at least half of the peer-reviewed scientific7 b- K5 y) t! b0 h1 E) ~7 j
papers in Nature should be retracted. How can one convince the editors and
! z, A. P2 X3 H: Q/ zreviewers that their proposed theory works for every possible case? One+ y3 h+ ]# R7 O9 v
cannot. One chooses to apply the theory to typical examples and to) c) V) H- M$ K m$ }7 v
demonstrate that in (hopefully) all scenarios considered, the theory works8 F6 w# Z: B# E' J" \
to a degree, and that that should warrant publication until a counterexample% I i, R" |) f* Q& c( {
is found. I could imagine that Callaway has a sceptical mind, which is: `+ J+ ^1 F7 y8 @: |% F' A1 s7 C
crucial to scientific thinking, but that would be put to better use if he
+ W$ ` D! P8 X9 ~2 E* [! Qwrote a peer-reviewed paper that discussed the odds of Ye doping on a highly+ |( i' x5 d/ w' }$ U) p
advanced, non-detectable drug that the Chinese have come up with in the
5 Q, O8 T3 G1 O7 m9 ~past 4 years (they obviously did not have it in Beijing, otherwise why not8 S8 `/ z9 l# I7 T% ~* \3 j
use it and woo the audience at home?), based on data and rational derivation
1 z: Q, \ o( U; A0 o1 k3 m0 r. This article, however, can be interpreted as saying that all athletes are5 X/ U$ F" s' z+ i7 v
doping and the authorities are just not good enough to catch them. That may A7 Z0 _( T* e, {( F
be true, logically, but definitely will not make the case if there is ever a
2 k, ]1 `$ O" Hhearing by the governing body for water sports, FINA, to determine if Ye
, j2 j: u( h; R2 r1 Thas doped. To ask whether it is possible to obtain a false negative in a1 H/ R+ D- `1 r- H
drug test looks like a rigged question to me. Of course it is possible:
/ z4 d# T, K% n8 r, hother than the athlete taking a drug that the test is not designed to detect
. h( G4 n+ r6 X% f8 K, anyone who has taken quantum 101 will tell you that everything is
( A- _0 c$ H* [( O& d( E" Gprobabilistic in nature, and so there is a probability that the drug in an
3 M5 M% n* J3 \+ s8 ~* }athlete’s system could tunnel out right at the moment of the test. A slight
; [3 K' A/ o+ r, Q* G9 o( Jchance it may be, but should we disregard all test results because of it?" F+ O- S [3 Q. ]
Let’s be practical and reasonable, and accept that the World Anti-Doping
8 H% q8 m8 _$ x: {# D: P* a: C* bagency (WADA) is competent at its job. Ye’s urine sample will be stored for$ |0 {6 y4 I# q# K! `8 Z- L
eight years after the contest for future testing as technology advances.
8 @* N& n+ d) C0 l$ S9 aInnocent until proven guilty, shouldn’t it be?
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+ b: R( p; j( Y* GSixth, and the last point I would like to make, is that the out-of-/ v( m/ A" r$ A2 f: X
competition drug test is already in effect, which Callaway failed to mention
/ P; N& K) w9 c7 M" T2 y# A J6 h. As noted in the president of WADA’s press release, drug testing for4 O; o# Z' `% W# J; V
Olympians began at least six months before the opening of the London: t J8 v- u) s6 U
Olympics. Furthermore, 107 athletes have been banned from this Olympics for- D/ D( t' G) B3 U( p4 L
doping. That may be the reason that “everyone will pass at the Olympic3 _/ f( h9 z) p5 k( U
games. Hardly anyone fails in competition testing” — those who did dope
" d0 X6 Z$ Y9 z. _have already been caught and sanctioned. Callaway is free to suggest that a$ |* b: a( _: b
player could have doped beforehand and fooled the test at the game, but this
3 N: }0 j- R5 Q% f Fpossibility is certainly ruled out for Ye.; a8 ~4 U4 J* v
, m+ a4 C/ u5 E& ]& U3 VOver all, even though Callaway did not falsify any data, he did (; Y) B* e9 g+ O M# F
intentionally or not) cherry-pick data that, in my view, are far too i) U- c y3 P! Y [
suggestive to be fair and unbiased. If you want to cover a story of a
/ [* Q8 U3 y# h4 p2 Y4 gsuspected doping from a scientific point of view, be impartial and provide" H. O3 B6 n! J' v3 F
all the facts for the reader to judge. You are entitled to your+ F$ e8 P$ J; N; F" {4 \. O! M9 L
interpretation of the facts, and the expression thereof in your piece,
( |% K5 V6 @1 Q( ?) Gexplicitly or otherwise, but showing only evidence that favours your
9 ^) h/ J; R I- [8 Z. s- xargument is hardly good science or journalism. Such an article in a journal
/ X5 M/ w+ M9 |: ? f/ csuch as Nature is not an appropriate example of how scientific research or
5 r) N- \! y# h! v7 A0 greporting should be done. |
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