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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( _4 l( e/ H7 Y& N9 S
如果是中国长大的,英语能到这种程度真是很不简单。! s7 }, W3 \" P0 @
: `9 ?0 @0 Z( \. e& [+ Jhttp://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html
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* Q9 l8 | t, L" M" ?6 M. AFROM LAI JIANG, Department of Chemistry, University of Pennsylvania
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+ f0 U" F: B- s/ _, I ~) B7 VIt is a shame to see Nature — which nearly all scientists, including myself
' p! l6 A g( l/ W, regard as one of the most prestigious and influential physical-science( o D. c8 ?# H- R% S' p
magazines — publish a thinly veiled biased article like this. Granted, this& l; ?# E0 U/ q) O# V. m9 [6 g t
is not a peer-reviewed scientific article and did not go through the
1 H% C- ?3 t" ^/ ]: \scrutiny of picking referees. But to serve as a channel for the general+ I( C! v) b `
populace to be in touch with and appreciate science, the authors and editors
9 q; R6 ?" O4 O8 D3 v: R, D- j/ rshould at least present the readers with facts within the proper context,1 c" a" r6 I! {1 C% U( o. g3 I
which they blatantly failed to do.
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0 ~. a% R' g+ y/ ~! f/ |First, to identify Ye’s performance increase, Ewen Callaway compared her
' q$ c& L) h0 G0 ?6 m. \Olympic 400-metre IM time with her performance at the World Championships in
5 [6 s4 R3 G1 e4 Y& T6 Q2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “
9 q$ D! X7 W* \! v, `1 `anomalous” improvement of around 7 seconds (6.72 s). In fact, her previous
+ P! v( R0 [* c- Qpersonal best was 4:33.79 at the Asian Games in 2010. This leads to an
7 L% C X4 @4 g6 _; `# G% zimprovement of 5.38 seconds. In a sporting event in which 0.1 s can be the! L. T- z. \9 p% I2 Y, U. ]
difference between the gold and silver medal, I see no reason for 5.38 s to
& t- _$ j! `- W4 a. _ [( A5 nbe treated as 7 s.7 ^; V; m" c6 M/ G( K
. _2 ^1 @. F' A$ o; ], N1 ^Second, as previously pointed out, Ye is only 16 years old and her body is
" X6 Z. x9 a2 @6 E! N8 F% C* ]still developing. Bettering oneself by 5 seconds over two years may seem
5 D8 q* C7 I$ m5 G# D# q/ wimpossible for an adult swimmer, but it certainly happens among youngsters.
4 {* \! F; I k+ BAn interview with Australian gold medallist Ian Thorpe revealed that his 400
5 Q+ V6 g, i0 N5 I-metre freestyle time improved by 5 seconds between the ages of 15 and 16.' l" S6 J6 g$ F
For regular people, including Callaway, it may be hard to imagine what an6 K7 z8 Y- v/ [! p% l
elite swimmer can achieve as he or she matures and undergoes scientific and
- ]# U" y3 ?4 g B. C2 Fpersistent training. But jumping to the conclusion that it is “anomalous”# b; ~, n4 w0 D2 V N
based on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.3 w% S5 ~' G2 ]$ Y3 j& |
# T9 \7 g, I' JThird, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook6 H: c: U$ L2 D; `; q
example of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in1 P1 P1 k# _! o1 {( a" Q
the last 50 metres, but Lochte had a huge lead in the first 300 metres, so4 u) N; f" q# p3 o
he chose not to push himself too hard and to conserve his energy for later
$ s3 x) m3 u0 X; p& J y, nevents (whether this conforms to the Olympic spirit and the ‘use one’s4 B6 a& t# o" q, ]6 w* y _5 z3 t+ e+ \
best efforts to win a match’ requirement that the Badminton World/ s7 v- n- z" v0 c
Federation recently invoked to disqualify four badminton pairs is another# W1 ?5 A5 y1 t* ^2 I) p9 m
topic worth discussing, though probably not in Nature). Ye, on the other% |, A+ Z. H0 @: S; n
hand, was trailing behind after the first 300 metres and relied on freestyle9 Y7 Y$ B3 o$ ?4 n
, in which she has an edge, to win the race. Failing to mention this! q5 x: K. n3 A- [1 T6 a) i0 E
strategic difference, as well as the fact that Lochte is 23.25 seconds8 E5 F* L4 E/ p* }+ \
faster (4:05.18) than Ye overall, creates the illusion that a woman swam/ w# o% H4 w8 D; _7 K! ]1 R
faster than the best man in the same sport, which sounds impossible. Putting/ w& q; |- ?( J' _% @& Q3 K
aside the gender argument, I believe this is still a leading question that/ _9 ]; S. x; M8 R h U
implies to the reader that there is something fishy going on.
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Fourth is another example of cherry-picking. In the same event, there are
( m+ W e. \3 r V2 Xfour male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93
: X8 L% P1 u- bs) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s
: g6 C. |# D1 o7 e), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns) W5 ^% W9 o4 z+ a8 n
out, if we are just talking about the last 50 metres in a 400-metre IM,
" O3 S% q! q5 `3 V$ y7 NLochter is not the example I would have used if I were the author. What kind
& ^( ]5 @. b0 x" y. |/ lof scientific rigorousness is Callaway trying to demonstrate here? Is it
9 j6 K0 S# Z* _4 rlogical that if Lochter is the champion, we should assume that he leads in) O# h2 d' O5 s9 a* l8 e/ y$ ~
every split? That would be a terrible way to teach the public how science
' Q: P1 [( ~7 Q: G P; q& Pworks.6 @# C) N6 _- V4 J
) h% {% G4 d4 H$ g! U, M8 B' `Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and2 u3 E# j5 d6 z- A
implies that a drug test cannot rule out the possibility of doping. Is this
) Q$ F3 l$ k5 p6 F' bkind of agnosticism what Nature really wants to teach its readers? By that
6 g8 O2 I% `! D' p. i/ Tstandard, I estimate that at least half of the peer-reviewed scientific) R5 [" q0 _2 D
papers in Nature should be retracted. How can one convince the editors and
# A0 R( X& B8 m a4 G) ~% h; Jreviewers that their proposed theory works for every possible case? One) z9 Y ]) i! r o. k
cannot. One chooses to apply the theory to typical examples and to$ `( }7 j9 f4 p2 n) E3 l0 `
demonstrate that in (hopefully) all scenarios considered, the theory works% Z; Z5 U5 Y( f+ z G1 X
to a degree, and that that should warrant publication until a counterexample* D. ~6 J$ X7 l, f/ E
is found. I could imagine that Callaway has a sceptical mind, which is
; R1 u" l7 ]5 f1 Zcrucial to scientific thinking, but that would be put to better use if he
* i; ?. ~: X% i( N: hwrote a peer-reviewed paper that discussed the odds of Ye doping on a highly+ ^, A7 U" U) z+ A8 \
advanced, non-detectable drug that the Chinese have come up with in the C% U8 u! u9 Z9 K( x. n/ s# w2 Q
past 4 years (they obviously did not have it in Beijing, otherwise why not4 O" a/ W/ [" N9 m0 o. B
use it and woo the audience at home?), based on data and rational derivation! [6 a& y# u6 ~& A
. This article, however, can be interpreted as saying that all athletes are
2 Z- F5 r! ^& v- ~5 E# H4 ldoping and the authorities are just not good enough to catch them. That may
- B9 k$ R0 s8 @& ]/ k8 ~be true, logically, but definitely will not make the case if there is ever a
6 W' F& m9 w0 Ehearing by the governing body for water sports, FINA, to determine if Ye
( v# m; `' B4 d5 ?has doped. To ask whether it is possible to obtain a false negative in a" b7 D8 G; ~& @7 m/ g4 ~ [, }
drug test looks like a rigged question to me. Of course it is possible:
* c) Y1 G( I6 ^3 N W$ xother than the athlete taking a drug that the test is not designed to detect. o- ]4 }) n+ b% `& W: K/ k' c
, anyone who has taken quantum 101 will tell you that everything is
- z, V$ ~* c0 @2 K9 y2 @% Oprobabilistic in nature, and so there is a probability that the drug in an7 u0 z( R4 ~. K& Q0 I! v8 g
athlete’s system could tunnel out right at the moment of the test. A slight) x3 e, ~: {% q
chance it may be, but should we disregard all test results because of it?
* N% m. ?% H* VLet’s be practical and reasonable, and accept that the World Anti-Doping3 Y' _) i* P- _0 E
agency (WADA) is competent at its job. Ye’s urine sample will be stored for
2 a" B' k! a. _( ^, _- leight years after the contest for future testing as technology advances.
' s# ?1 W3 z: d" O' O3 pInnocent until proven guilty, shouldn’t it be?
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Sixth, and the last point I would like to make, is that the out-of-% c+ j9 D, n- @+ n% N9 E
competition drug test is already in effect, which Callaway failed to mention! N! r% S: }# c+ t- l
. As noted in the president of WADA’s press release, drug testing for3 A/ S. m- ~/ T1 }2 [
Olympians began at least six months before the opening of the London' [! x3 e+ m8 c
Olympics. Furthermore, 107 athletes have been banned from this Olympics for
/ ]- @% m4 a% c F$ P# Q/ E9 hdoping. That may be the reason that “everyone will pass at the Olympic
0 B9 h4 H" d m* S: Q' wgames. Hardly anyone fails in competition testing” — those who did dope
5 k7 q# i/ J% B. u6 R2 Jhave already been caught and sanctioned. Callaway is free to suggest that a/ E6 |7 T, a4 c A. X
player could have doped beforehand and fooled the test at the game, but this( w1 X3 l5 q( ?
possibility is certainly ruled out for Ye." o. Z1 C/ `, t! K; U6 Z; c
F* [4 r# S! v# r* i& f0 j* G( R
Over all, even though Callaway did not falsify any data, he did (
3 i. _- y6 o7 t3 h0 I: Wintentionally or not) cherry-pick data that, in my view, are far too. i& W+ a! v# ^4 ?- {9 }3 r3 l3 f+ A
suggestive to be fair and unbiased. If you want to cover a story of a
7 f r; r: `% o* `9 nsuspected doping from a scientific point of view, be impartial and provide
3 X" i+ }5 \1 call the facts for the reader to judge. You are entitled to your/ }( ?% u/ e, d* v0 D, a. Z& O
interpretation of the facts, and the expression thereof in your piece,
/ w' i5 O$ E" b4 ?7 ?) w$ k* lexplicitly or otherwise, but showing only evidence that favours your& E1 j$ k. X0 ]; h
argument is hardly good science or journalism. Such an article in a journal9 s! O& s: t- }- K5 ~. j
such as Nature is not an appropriate example of how scientific research or$ v% i9 r$ @/ n! l* X
reporting should be done. |
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