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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( I2 p. I4 J7 o
如果是中国长大的,英语能到这种程度真是很不简单。) H R) ]& p# `3 q, l7 X. [; Z' _" m
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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 Pennsylvania
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It is a shame to see Nature — which nearly all scientists, including myself
; x* H0 J3 N* |, regard as one of the most prestigious and influential physical-science; o, M9 Z- d7 \( P
magazines — publish a thinly veiled biased article like this. Granted, this( Q' |7 X4 t) }2 ]9 B( o2 }1 z
is not a peer-reviewed scientific article and did not go through the+ {" N! Z/ r( u8 m# Y
scrutiny of picking referees. But to serve as a channel for the general
7 P3 B" y8 l8 g8 hpopulace to be in touch with and appreciate science, the authors and editors
- Q/ A# q8 u1 Eshould at least present the readers with facts within the proper context,8 I1 Z. `0 E/ Q. w% g0 N6 ^4 {
which they blatantly failed to do.
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% R2 c* N1 I( O1 HFirst, to identify Ye’s performance increase, Ewen Callaway compared her9 z! M$ _* K# R# D5 K/ B) }+ Z
Olympic 400-metre IM time with her performance at the World Championships in. \! {) B, E8 J) J; H* c
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “1 I2 x, W. `+ ~/ ^
anomalous” improvement of around 7 seconds (6.72 s). In fact, her previous
: C2 V$ T/ q+ N! H4 L2 Xpersonal best was 4:33.79 at the Asian Games in 2010. This leads to an t" m" J; ?( H& ~, B
improvement of 5.38 seconds. In a sporting event in which 0.1 s can be the
; t) h3 s/ D% F3 odifference between the gold and silver medal, I see no reason for 5.38 s to- O+ J5 S! {2 h( `! S# ?% E M U
be treated as 7 s.
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Second, as previously pointed out, Ye is only 16 years old and her body is( j6 d! J$ a3 _
still developing. Bettering oneself by 5 seconds over two years may seem
f1 d& ?3 I1 [; c- n6 {impossible for an adult swimmer, but it certainly happens among youngsters.
: z. g& i6 g" P9 i* AAn interview with Australian gold medallist Ian Thorpe revealed that his 4006 S6 S" I! T6 P/ u; [0 n: T3 z% R3 D) W
-metre freestyle time improved by 5 seconds between the ages of 15 and 16.: n& o4 y( E! | {
For regular people, including Callaway, it may be hard to imagine what an
7 \2 x V6 j9 W& W% \/ r2 O5 ?elite swimmer can achieve as he or she matures and undergoes scientific and
8 [1 s3 Y+ v$ W5 @; g) hpersistent training. But jumping to the conclusion that it is “anomalous”
2 j0 a% t) h% _6 S- Kbased on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.) R0 \9 X+ k+ T8 o7 o w W% I
$ _$ N( y9 p( X: F: L3 n+ fThird, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook
7 s+ n: H J2 d5 f vexample of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in
$ c# |6 |! Z% I0 k7 L# [3 r- @the last 50 metres, but Lochte had a huge lead in the first 300 metres, so3 w0 }3 v& Y) p: b' U1 \( G
he chose not to push himself too hard and to conserve his energy for later
% f/ j% Y3 f1 l" Cevents (whether this conforms to the Olympic spirit and the ‘use one’s
2 y0 N% F9 Q6 t3 `0 e( k, b3 O6 fbest efforts to win a match’ requirement that the Badminton World
& L1 |7 z. O1 {# F. h; HFederation recently invoked to disqualify four badminton pairs is another: J; j/ K; O0 ^2 O
topic worth discussing, though probably not in Nature). Ye, on the other
3 I/ L9 I# b: n% M# V# fhand, was trailing behind after the first 300 metres and relied on freestyle
6 o& k7 ~2 O/ d& a1 l8 q3 J* F) k' c, in which she has an edge, to win the race. Failing to mention this- j4 U6 X5 }: b. ^0 h
strategic difference, as well as the fact that Lochte is 23.25 seconds
3 k- V) r2 l4 F( ?7 X; D- M# Ffaster (4:05.18) than Ye overall, creates the illusion that a woman swam1 T8 {- p$ ~( {6 x! [
faster than the best man in the same sport, which sounds impossible. Putting
2 L0 K; ?6 ~3 o/ haside the gender argument, I believe this is still a leading question that k* v' K( t6 w/ @" F
implies to the reader that there is something fishy going on.$ n( L& O1 I+ |1 L6 N
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Fourth is another example of cherry-picking. In the same event, there are* p, K! l! q( r+ B
four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93+ y& {3 F* q9 G3 x1 G7 e6 F* C+ w7 P
s) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s( x: ~4 E) ?$ l& w; N% ]6 t/ M" m
), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns0 R, N5 \; E1 z
out, if we are just talking about the last 50 metres in a 400-metre IM,6 [; K- S L' O) {7 s% `
Lochter is not the example I would have used if I were the author. What kind
) M% p8 v) S l9 c* [; G& yof scientific rigorousness is Callaway trying to demonstrate here? Is it
" V+ s$ f6 U. L% xlogical that if Lochter is the champion, we should assume that he leads in* L. ?5 H" K# Z v2 f
every split? That would be a terrible way to teach the public how science. ]/ _$ v. Z9 [; m: S7 C
works.' T; h. b( V$ O! p
m, L3 o3 c" s; m) E0 \# `Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and! W9 z4 {$ V) ^: g! F1 Z+ }; j
implies that a drug test cannot rule out the possibility of doping. Is this) O+ ]9 v9 w6 ]$ _* \1 z$ F
kind of agnosticism what Nature really wants to teach its readers? By that
; z3 q8 ^, B+ [: y" ostandard, I estimate that at least half of the peer-reviewed scientific
9 L: x9 V% ^: Q7 q* H. Bpapers in Nature should be retracted. How can one convince the editors and
9 y% h, O' e' b3 a8 {! Treviewers that their proposed theory works for every possible case? One
% X* {7 N }/ g+ Hcannot. One chooses to apply the theory to typical examples and to# v2 v& C4 X1 i- P9 {0 ~" |
demonstrate that in (hopefully) all scenarios considered, the theory works
9 ]9 |) I* b) S$ J# gto a degree, and that that should warrant publication until a counterexample9 d* m7 G7 x$ G- u/ [* v
is found. I could imagine that Callaway has a sceptical mind, which is
) m p% ~% }* t% ?crucial to scientific thinking, but that would be put to better use if he
. t5 H) b8 S. Z0 W/ h0 T# U( K% ?0 q& lwrote a peer-reviewed paper that discussed the odds of Ye doping on a highly
( z5 m; t% \+ V" hadvanced, non-detectable drug that the Chinese have come up with in the9 X, T+ ?5 w, K8 x# j* j+ J5 P3 N
past 4 years (they obviously did not have it in Beijing, otherwise why not
8 H2 g* x' m+ F: c. quse it and woo the audience at home?), based on data and rational derivation; \0 b2 L, P! f, @( z
. This article, however, can be interpreted as saying that all athletes are
) ?& \& C7 \) h/ X7 Y' Qdoping and the authorities are just not good enough to catch them. That may
) S* _4 u# M: x1 J& F! qbe true, logically, but definitely will not make the case if there is ever a' J, y. ~# f5 T7 g' L, q' x
hearing by the governing body for water sports, FINA, to determine if Ye
/ ?4 b# a4 T' Jhas doped. To ask whether it is possible to obtain a false negative in a" j3 T; x& e/ q$ r4 |! Q0 H5 _8 [5 R
drug test looks like a rigged question to me. Of course it is possible:
: G9 q. b' v# k0 }! Q3 Zother than the athlete taking a drug that the test is not designed to detect/ A6 n4 F" M/ _* F7 x/ J- N% ?4 e
, anyone who has taken quantum 101 will tell you that everything is
' {* t3 K7 x; m5 H" t- d6 Lprobabilistic in nature, and so there is a probability that the drug in an" }" ]# U6 Z) M+ D
athlete’s system could tunnel out right at the moment of the test. A slight7 }. d" J( j0 p# c Z
chance it may be, but should we disregard all test results because of it?
/ F. q7 P9 V7 @) G( a8 n& T* qLet’s be practical and reasonable, and accept that the World Anti-Doping
# Z3 M- ]$ `; d7 d1 l, magency (WADA) is competent at its job. Ye’s urine sample will be stored for1 g# I% o& Q" T5 H, e, r
eight years after the contest for future testing as technology advances.
+ t% s, h3 V: D* k& lInnocent until proven guilty, shouldn’t it be?5 }# u* S% n' e- d0 Y; O& d1 p6 c8 A+ Z
6 P+ a# n& T$ e: a+ g5 U+ ESixth, and the last point I would like to make, is that the out-of-" e0 F5 D( Z6 M" Q
competition drug test is already in effect, which Callaway failed to mention
! E4 T* T" Q7 [0 k6 j. As noted in the president of WADA’s press release, drug testing for' @ p- l6 W0 y
Olympians began at least six months before the opening of the London
# O% Z. ^, [; a% W' V: ~Olympics. Furthermore, 107 athletes have been banned from this Olympics for
$ T7 V+ j6 K1 D5 T3 V4 m5 r: E) |doping. That may be the reason that “everyone will pass at the Olympic9 o+ w: |$ k" t$ S
games. Hardly anyone fails in competition testing” — those who did dope
; x* F: u9 X7 m4 r' yhave already been caught and sanctioned. Callaway is free to suggest that a
{) Y: J( E1 }" |player could have doped beforehand and fooled the test at the game, but this
6 P( @# j0 i* t8 r# f' l9 r [possibility is certainly ruled out for Ye.
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Over all, even though Callaway did not falsify any data, he did (
5 T) v3 t: {2 C1 Rintentionally or not) cherry-pick data that, in my view, are far too
6 d) d h& B* N' Xsuggestive to be fair and unbiased. If you want to cover a story of a* {" i' j- w/ P: n @
suspected doping from a scientific point of view, be impartial and provide
Q& H( e; z, v7 F/ [' w9 ~" U9 Call the facts for the reader to judge. You are entitled to your3 Y' G4 I% r6 V4 S3 W4 d8 ]3 ?
interpretation of the facts, and the expression thereof in your piece,
* ~' x8 B; B8 M3 k$ l8 D8 ^explicitly or otherwise, but showing only evidence that favours your* }0 \" `6 D5 z8 J6 Y" D
argument is hardly good science or journalism. Such an article in a journal
! R* c$ e9 Q5 ~ k vsuch as Nature is not an appropriate example of how scientific research or0 o# O6 V% k+ T( W3 w, D5 P7 z7 ^
reporting should be done. |
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