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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" L) s: H5 C- \
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 Pennsylvania9 L) m$ ?* J+ x- W4 x$ {$ i! M- Q% I
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It is a shame to see Nature — which nearly all scientists, including myself
2 A+ }! T% B/ I: V3 x/ m/ g' P, regard as one of the most prestigious and influential physical-science$ t r% u2 h- N" @
magazines — publish a thinly veiled biased article like this. Granted, this
3 s; X5 t5 B+ X' xis not a peer-reviewed scientific article and did not go through the
" n5 g' Z3 P2 H" x% Bscrutiny of picking referees. But to serve as a channel for the general# W7 X& @! x1 P [
populace to be in touch with and appreciate science, the authors and editors
' ^) u: m) V% K# h( yshould at least present the readers with facts within the proper context," v' F( u0 {! z: J1 u) ?
which they blatantly failed to do.7 J3 _( e9 y0 A5 p4 I$ @0 P3 D* m
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First, to identify Ye’s performance increase, Ewen Callaway compared her
) s# g( b% z h( a. VOlympic 400-metre IM time with her performance at the World Championships in6 {/ F8 \8 _/ o' \6 f
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “
j# L1 ~" P+ C/ aanomalous” improvement of around 7 seconds (6.72 s). In fact, her previous
* I; Q c- Z) B/ Z( Z0 ?personal best was 4:33.79 at the Asian Games in 2010. This leads to an, i' u8 w) ?9 l/ Z+ h9 D
improvement of 5.38 seconds. In a sporting event in which 0.1 s can be the
3 e& I" ~ f$ h8 d- a" t. B# ldifference between the gold and silver medal, I see no reason for 5.38 s to
) z& O. P" i! P3 |9 U/ v4 Pbe treated as 7 s.% U/ k' B W8 S' b
+ x' b& G' r+ JSecond, as previously pointed out, Ye is only 16 years old and her body is) w1 l" h( ]! p* _( A
still developing. Bettering oneself by 5 seconds over two years may seem3 B$ O8 s+ x) k* B7 e
impossible for an adult swimmer, but it certainly happens among youngsters.
( F! a3 M U$ R6 U1 ~An interview with Australian gold medallist Ian Thorpe revealed that his 400$ h$ W5 W2 e4 j. L, y( l8 T* G
-metre freestyle time improved by 5 seconds between the ages of 15 and 16.! P! i0 l6 Z7 i+ i- n
For regular people, including Callaway, it may be hard to imagine what an
& A) x4 ]* |1 d2 e% relite swimmer can achieve as he or she matures and undergoes scientific and: ~* {! f W# V
persistent training. But jumping to the conclusion that it is “anomalous”
2 C' d0 r) p: q& Z" abased on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.
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Third, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook
5 U) o$ ~+ x( wexample of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in
+ ?. x$ B' F( A4 C j* X! qthe last 50 metres, but Lochte had a huge lead in the first 300 metres, so" c+ H( Q0 L; P5 {5 u- W$ ^5 L& B
he chose not to push himself too hard and to conserve his energy for later
( S% d$ k, k6 p9 z# mevents (whether this conforms to the Olympic spirit and the ‘use one’s6 P) X8 F) C- M- n% v8 P: K" b
best efforts to win a match’ requirement that the Badminton World( G5 D: P# V% |4 W0 e2 ?
Federation recently invoked to disqualify four badminton pairs is another
1 i+ S6 }9 x5 q9 r2 Qtopic worth discussing, though probably not in Nature). Ye, on the other
! v# c4 v0 ^' R) Nhand, was trailing behind after the first 300 metres and relied on freestyle
2 E% Z8 y# T; w6 a2 p% i6 |3 o# ~7 G, in which she has an edge, to win the race. Failing to mention this% ?$ l% R0 M0 v, Q1 d
strategic difference, as well as the fact that Lochte is 23.25 seconds
9 `. _' ^- J, t+ D! H, yfaster (4:05.18) than Ye overall, creates the illusion that a woman swam/ _5 b$ i+ x: t8 k. S( R$ F3 W9 \
faster than the best man in the same sport, which sounds impossible. Putting2 j2 _+ K' m3 \" H
aside the gender argument, I believe this is still a leading question that
0 @4 L& S! X0 @implies to the reader that there is something fishy going on.2 Q: H$ h( E3 H7 m# E
" t: i4 l7 S1 C$ e! w5 KFourth is another example of cherry-picking. In the same event, there are
7 s6 t8 j: Q6 H, C7 yfour male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93! L4 K+ s5 n" [1 O' J
s) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s
0 ^$ [$ l/ D3 x3 v$ y) \* y), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns
, Q) n0 V4 i/ bout, if we are just talking about the last 50 metres in a 400-metre IM,
& Y: f2 Z" d" r. ZLochter is not the example I would have used if I were the author. What kind. W$ D& s/ N+ ~, `2 t& a
of scientific rigorousness is Callaway trying to demonstrate here? Is it
; f+ g; v% b% j% K7 |$ v# qlogical that if Lochter is the champion, we should assume that he leads in/ q; p \( L, q) j. G# l
every split? That would be a terrible way to teach the public how science
) D& U5 W1 {2 W# xworks.
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Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and+ p" ^- c* m& |0 {! u+ G- g6 W
implies that a drug test cannot rule out the possibility of doping. Is this' f4 N, I9 J/ A+ p- O
kind of agnosticism what Nature really wants to teach its readers? By that9 E" w r; |+ v+ d9 P, Z
standard, I estimate that at least half of the peer-reviewed scientific
) ^6 e: ?/ K; J, z* S( Wpapers in Nature should be retracted. How can one convince the editors and3 i+ v% N+ k, K& F: i/ @$ J; [; A
reviewers that their proposed theory works for every possible case? One* @- t( @" O: t" [/ J% f
cannot. One chooses to apply the theory to typical examples and to) }: ~" @9 n" U6 k6 n' s9 z9 [
demonstrate that in (hopefully) all scenarios considered, the theory works' E7 t8 E- Y% M& j5 i- y3 v& ?# R
to a degree, and that that should warrant publication until a counterexample
/ A7 | j- Y( I$ K% u7 Q. `6 Uis found. I could imagine that Callaway has a sceptical mind, which is' T# N4 c4 j0 V% q) e1 y) C* ~
crucial to scientific thinking, but that would be put to better use if he
* o7 s5 M; b) {$ Bwrote a peer-reviewed paper that discussed the odds of Ye doping on a highly7 z8 `6 k n' @, p# r! J/ T# L4 W2 X
advanced, non-detectable drug that the Chinese have come up with in the
8 }2 G# v9 u; B* h) F: xpast 4 years (they obviously did not have it in Beijing, otherwise why not
; O4 |" [1 q% `; }% Wuse it and woo the audience at home?), based on data and rational derivation( t; n* M2 y* r$ N
. This article, however, can be interpreted as saying that all athletes are
9 M7 o( d9 R; X8 c9 gdoping and the authorities are just not good enough to catch them. That may
! f5 j4 O- o4 @/ ybe true, logically, but definitely will not make the case if there is ever a6 |2 q. V( p8 o3 r; H. N
hearing by the governing body for water sports, FINA, to determine if Ye p( a2 S3 I H- o0 }
has doped. To ask whether it is possible to obtain a false negative in a
6 O% F" l. l" C' r8 t" mdrug test looks like a rigged question to me. Of course it is possible:
% b! Y9 \9 i/ P) A5 ?other than the athlete taking a drug that the test is not designed to detect
! k. l3 d# k2 ?; B* K% J" Q, anyone who has taken quantum 101 will tell you that everything is) ~2 |* Q; P' |" |5 V
probabilistic in nature, and so there is a probability that the drug in an& Z+ Y9 K' O/ d: d$ }/ W5 }) X5 V
athlete’s system could tunnel out right at the moment of the test. A slight- y3 K3 \" X& v1 b
chance it may be, but should we disregard all test results because of it?+ [ x6 a1 J" s/ D u% |) n E, A
Let’s be practical and reasonable, and accept that the World Anti-Doping
" u4 z' Q' n1 M0 y* N! i3 yagency (WADA) is competent at its job. Ye’s urine sample will be stored for
0 O' n; r# V4 z# n u8 T1 L. beight years after the contest for future testing as technology advances.
8 S2 w: D, J/ A( g' ^! iInnocent until proven guilty, shouldn’t it be?
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8 E3 y$ r9 m2 m2 ISixth, and the last point I would like to make, is that the out-of-
$ V7 }' h/ \' Gcompetition drug test is already in effect, which Callaway failed to mention
+ r9 K7 J$ }' L- q. As noted in the president of WADA’s press release, drug testing for
/ l X! d1 c1 }+ ?& S9 V3 EOlympians began at least six months before the opening of the London" N4 b- H: C4 w6 N* y/ R* U
Olympics. Furthermore, 107 athletes have been banned from this Olympics for* K7 J7 u" O E7 Z: A3 B
doping. That may be the reason that “everyone will pass at the Olympic' E6 _4 z& |# }! ~6 W4 g' {
games. Hardly anyone fails in competition testing” — those who did dope0 ^0 L$ G" ?% B- B( Z6 D/ I5 ?
have already been caught and sanctioned. Callaway is free to suggest that a
$ ]0 d3 A& X& _3 _player could have doped beforehand and fooled the test at the game, but this
, O) @( Q# f8 i. npossibility is certainly ruled out for Ye.2 W% w! K6 W0 _$ T7 w- W
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Over all, even though Callaway did not falsify any data, he did (" v0 c4 Q6 h$ P, m X& A9 e
intentionally or not) cherry-pick data that, in my view, are far too0 e5 a! j' m, V) R# B/ }
suggestive to be fair and unbiased. If you want to cover a story of a+ A9 y! d, p# A' N9 a: p: |- u
suspected doping from a scientific point of view, be impartial and provide) o k, |8 r' H
all the facts for the reader to judge. You are entitled to your
S* A+ Z& j; Kinterpretation of the facts, and the expression thereof in your piece,- O& T4 C( @- s, w1 H ?
explicitly or otherwise, but showing only evidence that favours your
. H/ [) @/ E- c [argument is hardly good science or journalism. Such an article in a journal5 H8 `# H7 a5 h9 j3 ^0 V
such as Nature is not an appropriate example of how scientific research or
$ o0 _$ B" H# E* E0 Rreporting should be done. |
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