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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
. ^3 v+ U$ b% q* q+ _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: u4 F. _- Q/ \" ~4 o9 v: E$ H2 F
7 B3 {6 _5 N" l* B" C& L& m# g, z6 rFROM 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
0 _9 c# r& S- c0 ]8 `8 _8 G, regard as one of the most prestigious and influential physical-science. Q6 B1 N" @( j; g
magazines — publish a thinly veiled biased article like this. Granted, this$ o1 h# {9 m% b/ V
is not a peer-reviewed scientific article and did not go through the
+ f0 d% f: F& wscrutiny of picking referees. But to serve as a channel for the general
& M, M3 Y' V4 I a* V7 k ypopulace to be in touch with and appreciate science, the authors and editors8 X" M* {6 }* `) j
should at least present the readers with facts within the proper context,
, ?% R2 F0 v7 r" `+ V+ [which they blatantly failed to do.
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First, to identify Ye’s performance increase, Ewen Callaway compared her
$ O% D: y# P' `. pOlympic 400-metre IM time with her performance at the World Championships in# e+ ?8 g- g" G$ {( h8 u, M1 X
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “" s- ?( e' I9 f7 W7 l8 f* P
anomalous” improvement of around 7 seconds (6.72 s). In fact, her previous
+ [1 g7 \- B8 M1 b# w9 E' q& ipersonal best was 4:33.79 at the Asian Games in 2010. This leads to an7 U: _% M0 |6 m4 i
improvement of 5.38 seconds. In a sporting event in which 0.1 s can be the
# ~, {2 B0 D3 j% H% Qdifference between the gold and silver medal, I see no reason for 5.38 s to
, ^% l% f# x: Dbe treated as 7 s.
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. ^" U5 l$ o" t5 C! y4 x2 }* ySecond, as previously pointed out, Ye is only 16 years old and her body is; K4 K2 G6 u, ~" p( K4 R7 v* U
still developing. Bettering oneself by 5 seconds over two years may seem. N- t2 Z4 A" o3 N- j' g. K
impossible for an adult swimmer, but it certainly happens among youngsters.
0 I1 c" M# p" d! W u- QAn interview with Australian gold medallist Ian Thorpe revealed that his 400: D" O: Q0 c+ o' |
-metre freestyle time improved by 5 seconds between the ages of 15 and 16.
& M% ]% d# ?% [0 a8 a/ xFor regular people, including Callaway, it may be hard to imagine what an
e& I9 F2 u$ Eelite swimmer can achieve as he or she matures and undergoes scientific and% L/ J0 [5 f9 }1 a
persistent training. But jumping to the conclusion that it is “anomalous”
2 L1 `) `. q( y1 Bbased on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.( P. V. x" H E9 t \# f# p7 T
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Third, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook
) L' k- f1 M c, _9 Yexample of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in7 V! D d/ k# i. _
the last 50 metres, but Lochte had a huge lead in the first 300 metres, so
* d6 |$ W5 {2 v& y1 V' _' Qhe chose not to push himself too hard and to conserve his energy for later$ p N; J0 I8 L5 g R
events (whether this conforms to the Olympic spirit and the ‘use one’s
' w% M0 y0 i& Ebest efforts to win a match’ requirement that the Badminton World
% ~* W! D) {# \+ _5 d4 L+ zFederation recently invoked to disqualify four badminton pairs is another
7 A! v5 X1 |) ]topic worth discussing, though probably not in Nature). Ye, on the other( T/ m+ T1 r1 P6 C' {5 N% L6 ? |
hand, was trailing behind after the first 300 metres and relied on freestyle
( w& G, ^2 r' @2 |: G, in which she has an edge, to win the race. Failing to mention this& f+ P4 P9 Y- B( f( U9 V7 C% h
strategic difference, as well as the fact that Lochte is 23.25 seconds. {* F, g0 U1 f
faster (4:05.18) than Ye overall, creates the illusion that a woman swam
4 o8 b( j3 F+ R) i& b* E# m3 Efaster than the best man in the same sport, which sounds impossible. Putting
8 _- q; _3 e' R/ p1 z; _3 b0 aaside the gender argument, I believe this is still a leading question that0 g8 Y! d5 q) B7 G, \
implies to the reader that there is something fishy going on.1 [# g3 d) T; Y }, B$ B1 M& W
g; S) L+ V' U/ @) RFourth is another example of cherry-picking. In the same event, there are
6 l9 z9 {9 x, mfour male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93
" ?# [, W7 O- V: Ls) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s2 N9 ?$ j5 y! S
), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns
- d3 ~6 c4 B6 Q/ A$ u7 `out, if we are just talking about the last 50 metres in a 400-metre IM,/ _3 C& n! F( D6 F
Lochter is not the example I would have used if I were the author. What kind
' m' ~1 |! q V; x- E; b5 uof scientific rigorousness is Callaway trying to demonstrate here? Is it- R! y( M' F0 d% [. m
logical that if Lochter is the champion, we should assume that he leads in
) J# T6 u# H+ { V, bevery split? That would be a terrible way to teach the public how science
9 ]/ u1 b, `; [1 v, |- E- [works.3 k6 W8 {* L* U# u
- ~" O M Q. j1 PFifth is the issue I oppose the most. Callaway quotes Ross Tucker and, i% ?2 A# ?8 M; F+ n
implies that a drug test cannot rule out the possibility of doping. Is this0 S1 [% j+ E1 x9 p. y& w) Q4 A
kind of agnosticism what Nature really wants to teach its readers? By that8 X! ^3 E3 ?2 }- x2 {
standard, I estimate that at least half of the peer-reviewed scientific
& E2 G3 i' a2 c4 S8 Q3 w E0 [. Bpapers in Nature should be retracted. How can one convince the editors and" J$ X, m( w- S; S9 j' D
reviewers that their proposed theory works for every possible case? One
/ h. p/ ~: |$ c- k) w# Q0 Hcannot. One chooses to apply the theory to typical examples and to+ Y1 a5 U8 Y( r/ M/ N6 _
demonstrate that in (hopefully) all scenarios considered, the theory works$ E/ z# j2 D+ K+ d+ G2 y
to a degree, and that that should warrant publication until a counterexample$ |7 F$ |* O+ G
is found. I could imagine that Callaway has a sceptical mind, which is; Q7 n: ^2 E0 u
crucial to scientific thinking, but that would be put to better use if he
0 X# ^ S, E+ K u7 Xwrote a peer-reviewed paper that discussed the odds of Ye doping on a highly
! S% ?& E% @8 W' F& Q. Badvanced, non-detectable drug that the Chinese have come up with in the1 d9 T1 @0 G) K
past 4 years (they obviously did not have it in Beijing, otherwise why not6 H6 `4 A; h' V( X
use it and woo the audience at home?), based on data and rational derivation
8 L. D7 F& y. w* ]9 e. This article, however, can be interpreted as saying that all athletes are3 M& l0 h2 ]9 k
doping and the authorities are just not good enough to catch them. That may* o+ o5 n: }1 \$ f9 W
be true, logically, but definitely will not make the case if there is ever a
# Q* f+ X1 H8 W. j# Y$ Phearing by the governing body for water sports, FINA, to determine if Ye1 M6 W6 f# o' C2 {
has doped. To ask whether it is possible to obtain a false negative in a0 \0 Z# S2 z. r" p* c& }" y
drug test looks like a rigged question to me. Of course it is possible:
+ {" H( A& A1 @other than the athlete taking a drug that the test is not designed to detect0 H8 G s2 D7 o* X6 i! K& L9 w
, anyone who has taken quantum 101 will tell you that everything is3 E9 g1 p" }: S& h* \! J0 `2 x8 V
probabilistic in nature, and so there is a probability that the drug in an
7 W3 D. u% ]8 d0 M/ E# D/ gathlete’s system could tunnel out right at the moment of the test. A slight
1 G1 a8 J% J( |8 e3 ?! \0 Pchance it may be, but should we disregard all test results because of it?
, j: M. @9 s& Z! q8 j yLet’s be practical and reasonable, and accept that the World Anti-Doping
* g- c Q. W+ wagency (WADA) is competent at its job. Ye’s urine sample will be stored for
v% w* Z* v9 Z3 e9 xeight years after the contest for future testing as technology advances.
$ k" z. g; [9 ?# W2 aInnocent 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-$ t0 o- V* Q8 z# d7 c- Y
competition drug test is already in effect, which Callaway failed to mention& R. a* y# n/ q! Z9 v3 o
. As noted in the president of WADA’s press release, drug testing for
. @$ j7 s9 j' F$ n6 Z' kOlympians began at least six months before the opening of the London, {6 M, p8 k2 Q/ E) o$ y" p3 m
Olympics. Furthermore, 107 athletes have been banned from this Olympics for
" s% R4 M$ @9 ldoping. That may be the reason that “everyone will pass at the Olympic; _% s3 V& ]5 n+ L& N7 K% W$ ]
games. Hardly anyone fails in competition testing” — those who did dope+ Q! v, u6 h! D4 g1 z# z* B* x) _; S, v
have already been caught and sanctioned. Callaway is free to suggest that a; k# ~; R1 E; v. i# l
player could have doped beforehand and fooled the test at the game, but this
8 e1 g: x0 u) Lpossibility is certainly ruled out for Ye.( ~( I) `2 f7 j+ B$ B" a1 M
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Over all, even though Callaway did not falsify any data, he did (
$ Z' j8 G3 \ F3 Ointentionally or not) cherry-pick data that, in my view, are far too ~0 t/ [8 Z& a) H
suggestive to be fair and unbiased. If you want to cover a story of a: P( o9 Z" S3 k" _
suspected doping from a scientific point of view, be impartial and provide
: l5 a/ W0 p7 L- u' Eall the facts for the reader to judge. You are entitled to your" z# h# q3 o' J1 h" p
interpretation of the facts, and the expression thereof in your piece,
6 V5 v) Z5 x7 j2 w4 C" _/ oexplicitly or otherwise, but showing only evidence that favours your- c% |8 H! r" x _1 W
argument is hardly good science or journalism. Such an article in a journal
, G4 Y$ E; B$ _# Qsuch as Nature is not an appropriate example of how scientific research or
5 t; q" i4 j. I3 nreporting should be done. |
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