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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. B5 k# g! |5 G
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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* `6 ^" A8 I" Z7 x0 R9 TFROM 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
# _! p4 F2 D; [7 ]7 g) ], regard as one of the most prestigious and influential physical-science
. s8 [. U2 t& R1 Kmagazines — publish a thinly veiled biased article like this. Granted, this0 _& R( B1 k# }+ J3 M
is not a peer-reviewed scientific article and did not go through the+ ^# F" n4 p8 y, Y1 R* K
scrutiny of picking referees. But to serve as a channel for the general; Q2 E- y* ]3 M1 M/ g5 m
populace to be in touch with and appreciate science, the authors and editors
1 ^5 P3 f7 D' @" Zshould at least present the readers with facts within the proper context,/ L& o3 J" }. z& `( \8 z
which they blatantly failed to do.
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* W8 u+ O8 U; k/ z( Y, vFirst, to identify Ye’s performance increase, Ewen Callaway compared her# u' d0 w+ g# L$ E- E
Olympic 400-metre IM time with her performance at the World Championships in
. \/ ~: ~& s% R2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “
! s3 l5 l- K5 i8 g, {1 _/ ]1 Banomalous” improvement of around 7 seconds (6.72 s). In fact, her previous
) x. e! ?' q. P- epersonal best was 4:33.79 at the Asian Games in 2010. This leads to an# W: f8 G/ {* v7 s/ d1 J$ M
improvement of 5.38 seconds. In a sporting event in which 0.1 s can be the
* ^: J! d7 S+ }# D% tdifference between the gold and silver medal, I see no reason for 5.38 s to
/ n6 r! e) {; O8 M( b |0 Bbe treated as 7 s.; w. c! }1 w+ ~3 Q# `; j
7 G2 R1 G- C7 W/ c6 A0 S6 |9 y ~Second, as previously pointed out, Ye is only 16 years old and her body is
+ \6 `# M& a" Q) Q( h. Xstill developing. Bettering oneself by 5 seconds over two years may seem/ u. r4 v. {- }" x
impossible for an adult swimmer, but it certainly happens among youngsters.& S- V4 o) @' K
An interview with Australian gold medallist Ian Thorpe revealed that his 400
! Y0 J* s) F! L) p-metre freestyle time improved by 5 seconds between the ages of 15 and 16." X. C, m* W: [9 S
For regular people, including Callaway, it may be hard to imagine what an! A9 t" @8 L) u9 {$ |; Z7 I: r
elite swimmer can achieve as he or she matures and undergoes scientific and' s- w# E; y# X+ L5 Q& h$ E
persistent training. But jumping to the conclusion that it is “anomalous”
$ w! j Y- i$ \, ~6 V P1 [% Cbased on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.
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+ z `8 V1 D' b; u9 I2 E7 c& M4 {Third, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook
' E; _+ `) z' I, n$ v: ]* a& ^! wexample of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in, S7 N5 X: F- [7 |: w* r
the last 50 metres, but Lochte had a huge lead in the first 300 metres, so: s$ A" I- f$ s4 a
he chose not to push himself too hard and to conserve his energy for later! ~: b D( k3 o N) L \2 d' I
events (whether this conforms to the Olympic spirit and the ‘use one’s
! d, y# z6 j% Ybest efforts to win a match’ requirement that the Badminton World' p5 D" Q2 d' B' R0 r
Federation recently invoked to disqualify four badminton pairs is another8 v$ M1 n5 Y; r/ P! ?! e
topic worth discussing, though probably not in Nature). Ye, on the other* t H1 D, ^2 Q
hand, was trailing behind after the first 300 metres and relied on freestyle
7 z5 Y$ D% {' B: X* Z8 N, in which she has an edge, to win the race. Failing to mention this( h i) u# B1 l7 S# j
strategic difference, as well as the fact that Lochte is 23.25 seconds
/ J4 M) i4 M+ v& s( q! h$ T0 {faster (4:05.18) than Ye overall, creates the illusion that a woman swam
' y% u4 l. ^4 G* ]6 r+ `faster than the best man in the same sport, which sounds impossible. Putting
9 v6 n c% q$ Z: O/ \# x* caside the gender argument, I believe this is still a leading question that: J9 h' j5 x9 b; c+ l1 @
implies to the reader that there is something fishy going on.
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1 v* s; F$ f# vFourth is another example of cherry-picking. In the same event, there are- t6 W0 j$ k2 k) q0 B# m7 U/ ~
four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93
3 S+ `6 s7 {( ^/ W- as) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s
! _! y2 v: f4 A5 i1 _), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns
# }6 H, c9 o, l; R% ]9 {; A: W, e& kout, if we are just talking about the last 50 metres in a 400-metre IM,$ }" g% a) f; r( Y u! U* m. V
Lochter is not the example I would have used if I were the author. What kind
' t) Q. x4 G Uof scientific rigorousness is Callaway trying to demonstrate here? Is it
4 ?0 k. o; S/ Blogical that if Lochter is the champion, we should assume that he leads in! n0 \5 p, o. L2 b) C3 P# F& n
every split? That would be a terrible way to teach the public how science; Y0 J$ t* R0 j. ]# F
works.( [8 b" y p# {7 C' i0 R
! _, h7 e+ F5 i0 @Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and/ ]# c- E; K! _: n
implies that a drug test cannot rule out the possibility of doping. Is this
, ~( V) m2 }8 z( k) Wkind of agnosticism what Nature really wants to teach its readers? By that
7 T, V. q# a3 ^; \ P) I& ]( lstandard, I estimate that at least half of the peer-reviewed scientific: d. h/ B/ {2 G) g5 N" s' Q" _( v
papers in Nature should be retracted. How can one convince the editors and& Y+ M& W1 D9 T( D2 k. M! v
reviewers that their proposed theory works for every possible case? One
/ b t. |1 Z+ ~5 r) G7 Ncannot. One chooses to apply the theory to typical examples and to: o0 {. U/ U8 v Q" l/ |/ m
demonstrate that in (hopefully) all scenarios considered, the theory works4 `: I% ]& H0 j- M ^
to a degree, and that that should warrant publication until a counterexample1 F! i8 Z. j0 M" a
is found. I could imagine that Callaway has a sceptical mind, which is) A: x' g- n( C% _- [2 ^
crucial to scientific thinking, but that would be put to better use if he* h( L0 R& v% y' q) V: Q
wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly0 C4 z( v, f2 |0 h; N2 T
advanced, non-detectable drug that the Chinese have come up with in the( r! P( \" x% D5 Z
past 4 years (they obviously did not have it in Beijing, otherwise why not
! o }/ A- y4 g$ J9 |. \( w9 O( muse it and woo the audience at home?), based on data and rational derivation, a! {* `/ [- \$ `( K, L5 n
. This article, however, can be interpreted as saying that all athletes are, Y- s; z% \; o% O5 C* ]
doping and the authorities are just not good enough to catch them. That may
3 l% O6 d9 W) bbe true, logically, but definitely will not make the case if there is ever a
% E; F4 b8 A* u/ l M3 `hearing by the governing body for water sports, FINA, to determine if Ye
, Y( V/ O1 r; y) K$ ^1 vhas doped. To ask whether it is possible to obtain a false negative in a' e) `! u- ?" U# |
drug test looks like a rigged question to me. Of course it is possible:- n/ u7 H5 L- `6 }" e- D3 D
other than the athlete taking a drug that the test is not designed to detect2 c- H' J7 j# W- C2 _
, anyone who has taken quantum 101 will tell you that everything is
, s0 F( B k, bprobabilistic in nature, and so there is a probability that the drug in an
& v* V. H$ z" v: Cathlete’s system could tunnel out right at the moment of the test. A slight4 `* q; M, J- f! g( e- ^; r* f
chance it may be, but should we disregard all test results because of it?
% }* _7 G' }5 KLet’s be practical and reasonable, and accept that the World Anti-Doping
+ ]- c8 o j# \" q oagency (WADA) is competent at its job. Ye’s urine sample will be stored for
0 P) J( L" b# \ U ^eight years after the contest for future testing as technology advances.
o* m0 |0 i/ xInnocent until proven guilty, shouldn’t it be?
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2 L! \ \! `2 d/ z& _Sixth, and the last point I would like to make, is that the out-of-8 d9 S) U- j1 Y1 @+ y( u
competition drug test is already in effect, which Callaway failed to mention
+ j6 K/ {: N2 i" R( I. As noted in the president of WADA’s press release, drug testing for3 R3 ~" p7 ? f2 N6 x, N8 a$ M6 S5 r
Olympians began at least six months before the opening of the London, \. `2 t5 e3 B7 j1 z7 V' O: I6 B
Olympics. Furthermore, 107 athletes have been banned from this Olympics for
p% C1 W R! }: J g6 L) R8 J8 Mdoping. That may be the reason that “everyone will pass at the Olympic& O9 g/ M. F8 j
games. Hardly anyone fails in competition testing” — those who did dope
0 c3 `' F8 W4 [- @, ^2 _+ A* Shave already been caught and sanctioned. Callaway is free to suggest that a4 k( k3 z7 Y h' m1 o) f
player could have doped beforehand and fooled the test at the game, but this) V0 L' v' Y& R1 {8 I9 R( ^
possibility is certainly ruled out for Ye.
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1 E& Q/ I. H9 a: K+ Y, H4 D" }+ VOver all, even though Callaway did not falsify any data, he did (5 {& D/ ^. w+ Y$ d g' M7 P" F
intentionally or not) cherry-pick data that, in my view, are far too
1 D) S: F/ w8 F: a1 \suggestive to be fair and unbiased. If you want to cover a story of a# X# `3 M/ n' f: {% {% [
suspected doping from a scientific point of view, be impartial and provide
9 ]; o0 [3 K2 M6 t2 `: yall the facts for the reader to judge. You are entitled to your
; z: j" b7 r% W7 t, |% y4 [interpretation of the facts, and the expression thereof in your piece,$ w# U: w; }8 x+ v, e
explicitly or otherwise, but showing only evidence that favours your
* c% @- I `! X! ?argument is hardly good science or journalism. Such an article in a journal
1 p2 Z2 R# n' @/ w% g* r: Q9 N+ _such as Nature is not an appropriate example of how scientific research or
2 l( Z. ]2 _3 N; B' U0 h* Nreporting should be done. |
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