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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# L1 U, g, y/ _ t- \
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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* V6 Q4 ~6 s; O9 C5 Mhttp://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html& i& T5 y5 s R' W4 h y" f
( z1 _* G# g2 D; fFROM LAI JIANG, Department of Chemistry, University of Pennsylvania
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* j. l9 M, r/ i3 \, Y& R( z- U0 ]' tIt is a shame to see Nature — which nearly all scientists, including myself4 F# J/ d- \) s, c( J
, regard as one of the most prestigious and influential physical-science) q7 d7 C2 a6 F1 y
magazines — publish a thinly veiled biased article like this. Granted, this6 \" w/ l1 J( n
is not a peer-reviewed scientific article and did not go through the
+ G V2 D6 B- Bscrutiny of picking referees. But to serve as a channel for the general; E& B. w& I% ]- q& `! f0 u
populace to be in touch with and appreciate science, the authors and editors5 `( [3 p4 ?, r0 H$ J0 k7 ^: Z) {8 W
should at least present the readers with facts within the proper context,
- r' x( G) c9 {which they blatantly failed to do.
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First, to identify Ye’s performance increase, Ewen Callaway compared her4 O0 e n" T" J V2 n! ]: w& i
Olympic 400-metre IM time with her performance at the World Championships in; W5 @6 d: O6 d) |4 x: v; Y
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “+ u& K4 W$ B6 g9 u3 b! v2 ?
anomalous” improvement of around 7 seconds (6.72 s). In fact, her previous2 V4 e$ Z, W" g% o
personal best was 4:33.79 at the Asian Games in 2010. This leads to an
, P) F+ T1 s$ t. Eimprovement of 5.38 seconds. In a sporting event in which 0.1 s can be the1 b+ v3 }1 F8 Y5 l+ H
difference between the gold and silver medal, I see no reason for 5.38 s to3 ~5 b% A3 e3 {7 G0 v
be treated as 7 s. h* f1 E7 a' Z4 {' X# n* f$ c$ x
; V) X }5 v. E9 ?& k, R* m' xSecond, as previously pointed out, Ye is only 16 years old and her body is% [' M/ b. O4 u# k
still developing. Bettering oneself by 5 seconds over two years may seem
! G2 F" |( K/ n8 y- Nimpossible for an adult swimmer, but it certainly happens among youngsters.0 \1 f/ u2 J7 z! {) Q9 h. a6 r
An interview with Australian gold medallist Ian Thorpe revealed that his 400- g7 h, W/ R) f, ]
-metre freestyle time improved by 5 seconds between the ages of 15 and 16.' k2 X. V& V% t- A- ^! i
For regular people, including Callaway, it may be hard to imagine what an1 a6 f9 |( G: R! i( k3 e9 C
elite swimmer can achieve as he or she matures and undergoes scientific and4 ~& T$ C! l4 T% _. a8 k8 F
persistent training. But jumping to the conclusion that it is “anomalous”: U8 m2 A) w% b
based on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.
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4 M v4 B3 U. G) J* @" O2 q7 EThird, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook
/ D5 M' i5 v* H0 c+ oexample of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in
& P, w4 j! o2 r( H$ Cthe last 50 metres, but Lochte had a huge lead in the first 300 metres, so
' x3 h" g0 A+ K8 T8 {& she chose not to push himself too hard and to conserve his energy for later
& |* H! M* O5 x: a) C9 O- Q' revents (whether this conforms to the Olympic spirit and the ‘use one’s0 Y" b- F7 |1 j
best efforts to win a match’ requirement that the Badminton World
5 D% O( V9 Q7 KFederation recently invoked to disqualify four badminton pairs is another
/ w* f: Y; X0 q; m: W% etopic worth discussing, though probably not in Nature). Ye, on the other! V2 s( C3 V$ u' X+ _' U4 F
hand, was trailing behind after the first 300 metres and relied on freestyle
7 Y; \; Q' I c* {" ?7 |, in which she has an edge, to win the race. Failing to mention this8 M) \, @5 Y1 }! C( ~! x
strategic difference, as well as the fact that Lochte is 23.25 seconds# t8 \: ^# O& |; o" Y7 Z
faster (4:05.18) than Ye overall, creates the illusion that a woman swam3 N' V4 `+ Z6 @9 p1 D8 \- s
faster than the best man in the same sport, which sounds impossible. Putting& ?+ O0 T7 N* j$ ?
aside the gender argument, I believe this is still a leading question that ?# ~, S2 R1 t* y3 A8 w
implies to the reader that there is something fishy going on., W7 v# R) x+ Z
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Fourth is another example of cherry-picking. In the same event, there are: r/ O8 L; a: [) k0 X) I
four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93
7 T- y$ `/ t. N# V# r0 ]) d% vs) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s
6 i* b- j, c3 [9 p$ {6 @), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns
9 I$ C8 q6 u" V& kout, if we are just talking about the last 50 metres in a 400-metre IM,
2 J) T. O/ ]( _: l$ _$ l. MLochter is not the example I would have used if I were the author. What kind7 b: l- C/ \3 V) `# ~8 ^. p
of scientific rigorousness is Callaway trying to demonstrate here? Is it
9 i9 [. g( I8 F% j9 x+ J6 D6 U$ Wlogical that if Lochter is the champion, we should assume that he leads in! j( k3 N7 v% u+ O/ u# L
every split? That would be a terrible way to teach the public how science
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Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and. v% v7 r& b% v
implies that a drug test cannot rule out the possibility of doping. Is this
0 n9 c4 x# u' ]5 L2 Okind of agnosticism what Nature really wants to teach its readers? By that
* i5 s- [. O8 d- U( qstandard, I estimate that at least half of the peer-reviewed scientific1 r' U$ H! P* G3 R" r
papers in Nature should be retracted. How can one convince the editors and' g% q [# H, e4 n( J
reviewers that their proposed theory works for every possible case? One. M8 Y+ B5 ?7 @5 j
cannot. One chooses to apply the theory to typical examples and to: N0 A1 X5 O5 s% Z! t( x
demonstrate that in (hopefully) all scenarios considered, the theory works
! Y' T: H+ c7 ~2 X) Xto a degree, and that that should warrant publication until a counterexample) z, _; o, Q. }& f" S3 H( t' j1 G6 P
is found. I could imagine that Callaway has a sceptical mind, which is( K8 z% \4 }- E" d9 c: M; m
crucial to scientific thinking, but that would be put to better use if he
' \/ a" ] h- c: Bwrote a peer-reviewed paper that discussed the odds of Ye doping on a highly) m; ]% c3 }/ u+ i
advanced, non-detectable drug that the Chinese have come up with in the
. u4 U9 |& s; M- }- d# qpast 4 years (they obviously did not have it in Beijing, otherwise why not3 Y( w) v+ G4 h; V% ~
use it and woo the audience at home?), based on data and rational derivation
- v- _) K8 ^1 `+ V0 M5 {9 }. This article, however, can be interpreted as saying that all athletes are
( @' M; w# N& D) u( N4 s! w6 bdoping and the authorities are just not good enough to catch them. That may
0 {/ |0 [% G; h- B: Hbe true, logically, but definitely will not make the case if there is ever a% Z8 c$ M6 U8 { e8 c$ g, w
hearing by the governing body for water sports, FINA, to determine if Ye
! x8 l D( ~; k* Q; v+ L, Y7 @0 z# ehas doped. To ask whether it is possible to obtain a false negative in a0 u/ C9 l ?% u- ^& V
drug test looks like a rigged question to me. Of course it is possible:' h8 u( K! ~5 e2 G+ V3 M" x
other than the athlete taking a drug that the test is not designed to detect
4 F. Q! q5 L; s* Z- B- |, P' R, anyone who has taken quantum 101 will tell you that everything is
7 z8 p! F2 O* `8 [probabilistic in nature, and so there is a probability that the drug in an. z) e# u4 B! b- n
athlete’s system could tunnel out right at the moment of the test. A slight/ n" ?* G9 e) w( C) p, E" ]
chance it may be, but should we disregard all test results because of it?3 `* l+ d+ Y6 }7 T
Let’s be practical and reasonable, and accept that the World Anti-Doping0 R6 {$ p" X; f% Y
agency (WADA) is competent at its job. Ye’s urine sample will be stored for
4 V* Q8 G' z, i+ f0 seight years after the contest for future testing as technology advances., M3 N$ ~0 U1 a5 U" O! q
Innocent until proven guilty, shouldn’t it be? L6 L1 \6 c+ J4 h8 H0 _9 R
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Sixth, and the last point I would like to make, is that the out-of-9 j- m. I6 u' Z& w, L
competition drug test is already in effect, which Callaway failed to mention
" _0 V# \+ i3 x5 r0 v. As noted in the president of WADA’s press release, drug testing for1 O( h U3 G0 ^8 S6 Q1 U; q
Olympians began at least six months before the opening of the London0 M0 a K* k- ~" q5 w( Q+ `
Olympics. Furthermore, 107 athletes have been banned from this Olympics for
2 S: X& C0 i0 z) jdoping. That may be the reason that “everyone will pass at the Olympic
' w6 e! B! }. rgames. Hardly anyone fails in competition testing” — those who did dope
# L. o+ p. i3 Xhave already been caught and sanctioned. Callaway is free to suggest that a
* ?. _* j' w ?( C+ e. dplayer could have doped beforehand and fooled the test at the game, but this- U* z7 ^6 _5 n% D" [
possibility is certainly ruled out for Ye.
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! @# L7 X6 J, tOver all, even though Callaway did not falsify any data, he did (
" _5 M( c& r- i; l6 ^, J" eintentionally or not) cherry-pick data that, in my view, are far too
* K) @7 O+ P+ K2 p' ~9 O% [suggestive to be fair and unbiased. If you want to cover a story of a
/ i7 ?. C4 N9 K0 V1 a) J* Isuspected doping from a scientific point of view, be impartial and provide
0 _" F/ X( A1 _2 }+ I- r% z+ l: A6 Dall the facts for the reader to judge. You are entitled to your& ]) ~& }! m2 j: [. n1 r" Y
interpretation of the facts, and the expression thereof in your piece,
/ t4 x+ R. O) B2 [5 Zexplicitly or otherwise, but showing only evidence that favours your" g5 N3 n! X# R- S" _$ L7 o
argument is hardly good science or journalism. Such an article in a journal, E/ r. v8 @" X
such as Nature is not an appropriate example of how scientific research or
E3 w! t# r( ureporting should be done. |
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