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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
/ Z, z8 i7 A4 q7 M) p2 \" B, Y! a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 Pennsylvania8 z3 o+ ]5 [1 i1 _
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It is a shame to see Nature — which nearly all scientists, including myself
% c5 C* q: r( D- \, h7 T, regard as one of the most prestigious and influential physical-science
3 p+ j+ s- O" q/ z9 U, E1 _) d2 ~magazines — publish a thinly veiled biased article like this. Granted, this
' b) ~5 I* d' sis not a peer-reviewed scientific article and did not go through the h0 X) W6 c, {! [5 `
scrutiny of picking referees. But to serve as a channel for the general1 g: m _. Z9 J4 v; Y
populace to be in touch with and appreciate science, the authors and editors
5 Q. \ E2 S* M) }1 R# w8 a% V* z7 wshould at least present the readers with facts within the proper context,
8 y: g! H7 i* v( c6 A9 J( rwhich they blatantly failed to do.6 s% Q4 |3 J( _2 C0 S2 q+ G- w
% q8 x' V" Y3 e& t# H/ n9 hFirst, to identify Ye’s performance increase, Ewen Callaway compared her3 i8 l5 }- g8 f; z' { O, F
Olympic 400-metre IM time with her performance at the World Championships in, S+ b$ M$ W, S
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “
2 n! ~* O. K. qanomalous” improvement of around 7 seconds (6.72 s). In fact, her previous
7 g$ U' [1 h: @" M2 Z: ~0 N1 xpersonal best was 4:33.79 at the Asian Games in 2010. This leads to an# O/ o. |) w) g6 i
improvement of 5.38 seconds. In a sporting event in which 0.1 s can be the
7 ^ t% o% j, Xdifference between the gold and silver medal, I see no reason for 5.38 s to
+ N/ M6 H$ a" e4 Sbe treated as 7 s.
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Second, as previously pointed out, Ye is only 16 years old and her body is
8 l p% Z7 h# Z# Vstill developing. Bettering oneself by 5 seconds over two years may seem3 B! [' k; F1 d# A1 h
impossible for an adult swimmer, but it certainly happens among youngsters.& U3 T& b- X8 n( Y
An interview with Australian gold medallist Ian Thorpe revealed that his 400
, W! U8 Z' A {# J( b6 t* r- v-metre freestyle time improved by 5 seconds between the ages of 15 and 16.+ f$ i5 q* z: F% E
For regular people, including Callaway, it may be hard to imagine what an/ i/ N5 ^+ V9 J Z: |1 i/ \
elite swimmer can achieve as he or she matures and undergoes scientific and: w3 @5 b$ C7 a
persistent training. But jumping to the conclusion that it is “anomalous”9 T$ S4 y0 i: l7 v# }9 l
based on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.2 k" V! n% b3 `3 d
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Third, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook
7 z2 L' I- A) X) Gexample of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in
4 E7 g! e" w% Y$ d! m$ D2 P0 U$ Sthe last 50 metres, but Lochte had a huge lead in the first 300 metres, so
2 s( h. ^: a q2 ]he chose not to push himself too hard and to conserve his energy for later6 s0 B) Z) {) J1 h# v+ b1 a
events (whether this conforms to the Olympic spirit and the ‘use one’s
9 Z) g8 x0 L4 B5 ]! R$ Q- r# Gbest efforts to win a match’ requirement that the Badminton World
9 I. T' o7 |2 B0 l: p! N$ cFederation recently invoked to disqualify four badminton pairs is another
. m" I( h1 f v5 _topic worth discussing, though probably not in Nature). Ye, on the other4 q9 }8 P' y+ D; P: A
hand, was trailing behind after the first 300 metres and relied on freestyle' x( [# P$ [3 w( \2 ]
, in which she has an edge, to win the race. Failing to mention this; V0 |" L1 ^6 T. d$ X% h
strategic difference, as well as the fact that Lochte is 23.25 seconds
/ _# X0 r* y8 C- Lfaster (4:05.18) than Ye overall, creates the illusion that a woman swam0 Y$ d0 D" {, C. y2 a' h# ~
faster than the best man in the same sport, which sounds impossible. Putting
" s# ?! F( v& e' a/ Zaside the gender argument, I believe this is still a leading question that% N# d( y0 _( `: J1 C% ~
implies to the reader that there is something fishy going on.* i3 h0 Z% Z$ @, Y
% y+ B" p( j) \0 g4 ~Fourth is another example of cherry-picking. In the same event, there are
: X q& n: X3 g n c8 [& Lfour male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93, k; V- u N* ^6 t& J
s) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s
9 ]0 ]" P4 i. `" _), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns
' Q; x' @1 n% {) u6 v1 S) Lout, if we are just talking about the last 50 metres in a 400-metre IM,+ `9 t7 d. {6 I3 g$ h
Lochter is not the example I would have used if I were the author. What kind5 o/ `1 c& i1 H) f! r
of scientific rigorousness is Callaway trying to demonstrate here? Is it
7 t+ L, I% k% q* u3 M. `logical that if Lochter is the champion, we should assume that he leads in7 K4 Y! I6 F6 b( o
every split? That would be a terrible way to teach the public how science
2 N8 I4 S1 Z( O. w. d4 U8 U, vworks.
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$ y! O6 M) B6 T8 S# T3 i, \Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and
4 n/ Q6 q. p, i! `; X+ m, V5 ximplies that a drug test cannot rule out the possibility of doping. Is this+ Z" _4 S/ ^! z
kind of agnosticism what Nature really wants to teach its readers? By that
) e3 B, |" h% _; e7 j" tstandard, I estimate that at least half of the peer-reviewed scientific
/ s: T6 ]5 h; |3 z% `( y7 e1 [papers in Nature should be retracted. How can one convince the editors and
# z6 s! P) Y4 N: K) R+ m5 ]reviewers that their proposed theory works for every possible case? One
1 Q. S0 O, h) t& Acannot. One chooses to apply the theory to typical examples and to
4 e- s" ^# i. d7 ldemonstrate that in (hopefully) all scenarios considered, the theory works
; ` A' ^) Q- j2 N; s4 b1 u% l6 Kto a degree, and that that should warrant publication until a counterexample% g/ J1 h+ K4 x/ F; n, }2 J
is found. I could imagine that Callaway has a sceptical mind, which is* Z) h% }( t+ \$ ?
crucial to scientific thinking, but that would be put to better use if he% G! n. d; P/ l3 \1 Z
wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly
/ ]2 n2 p) p% [advanced, non-detectable drug that the Chinese have come up with in the2 Z8 B; f2 ~$ |" Q! W4 J& V% ]
past 4 years (they obviously did not have it in Beijing, otherwise why not( K. Q8 y1 y0 v% [2 Q
use it and woo the audience at home?), based on data and rational derivation' a( O1 K* N8 R8 s0 h5 c
. This article, however, can be interpreted as saying that all athletes are
0 z0 l5 Q- K& Q& D) M) {1 E, \doping and the authorities are just not good enough to catch them. That may
, ~6 K) Y2 ^4 M0 M) abe true, logically, but definitely will not make the case if there is ever a0 s- S" y8 o1 J
hearing by the governing body for water sports, FINA, to determine if Ye
7 I; o) Z. {- t! m( H5 E/ Yhas doped. To ask whether it is possible to obtain a false negative in a
; i* N* _4 {/ Z& W( vdrug test looks like a rigged question to me. Of course it is possible:. ^" y: D; [8 [+ ]
other than the athlete taking a drug that the test is not designed to detect
' g& N% N! k( L( m/ |0 c5 j) A, anyone who has taken quantum 101 will tell you that everything is
w3 t" Z7 ]7 s! A0 eprobabilistic in nature, and so there is a probability that the drug in an+ ~ H8 E7 v* y. K
athlete’s system could tunnel out right at the moment of the test. A slight" a$ K' O2 d1 R- B& V# M9 ]9 W: t6 e
chance it may be, but should we disregard all test results because of it?7 t. ]/ X% r, o
Let’s be practical and reasonable, and accept that the World Anti-Doping' G. \% }" m, M
agency (WADA) is competent at its job. Ye’s urine sample will be stored for9 d9 j5 O! ^ \' r/ Y
eight years after the contest for future testing as technology advances.3 {4 K# E5 ^2 V. `- O, j/ W
Innocent until proven guilty, shouldn’t it be?6 f6 @' E0 b1 Z: I
L }" Y5 h6 t9 l2 O2 `Sixth, and the last point I would like to make, is that the out-of-0 {) A0 g" o+ V" d- V+ f6 q
competition drug test is already in effect, which Callaway failed to mention
8 o, p8 ^1 u) C3 |9 a5 [- Y. As noted in the president of WADA’s press release, drug testing for
; t& \2 L: I5 ]% SOlympians began at least six months before the opening of the London8 [6 S. ]/ P3 R/ C5 w
Olympics. Furthermore, 107 athletes have been banned from this Olympics for8 C6 r4 C0 Y- X7 `! {) a
doping. That may be the reason that “everyone will pass at the Olympic' ^5 I: p6 y% ?+ _0 j5 b! d |
games. Hardly anyone fails in competition testing” — those who did dope! ~- J/ h2 ^/ C( G! K( h. J
have already been caught and sanctioned. Callaway is free to suggest that a- a' `0 `; j6 u
player could have doped beforehand and fooled the test at the game, but this4 c, z8 B+ [ c5 ~
possibility is certainly ruled out for Ye.: r1 r- O f9 Y& X; I1 m) N
0 r+ \& U# k4 z& Y, UOver all, even though Callaway did not falsify any data, he did (
9 x; {2 G8 z( F* V2 n- s( W$ gintentionally or not) cherry-pick data that, in my view, are far too! W( u% r( z# x# ?+ [
suggestive to be fair and unbiased. If you want to cover a story of a5 p- N3 R& U1 p6 [! I7 U
suspected doping from a scientific point of view, be impartial and provide
/ U& u+ W/ n$ P: z% I: H& ?6 |all the facts for the reader to judge. You are entitled to your. ]: R. M4 y2 h; d! F, s% f- ^
interpretation of the facts, and the expression thereof in your piece,
' C6 _. \! n* D# dexplicitly or otherwise, but showing only evidence that favours your: r" f8 E5 h; O' Y
argument is hardly good science or journalism. Such an article in a journal ?; h! `7 S( K+ \' r5 W
such as Nature is not an appropriate example of how scientific research or
1 H+ r3 }' ^' C, K ureporting should be done. |
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