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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; J" q& {5 c* g5 h
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 Pennsylvania/ Z4 Q' e3 C6 k* \3 Q0 u7 E
- _& _" F; s$ B' k1 j5 x% UIt is a shame to see Nature — which nearly all scientists, including myself" t2 M" d1 {1 a: m
, regard as one of the most prestigious and influential physical-science$ j- ^4 Y3 @$ t v
magazines — publish a thinly veiled biased article like this. Granted, this
6 ?5 ~- R( i0 z$ ?5 Zis not a peer-reviewed scientific article and did not go through the
( Y1 P1 \6 B/ f$ _( w" b) jscrutiny of picking referees. But to serve as a channel for the general
9 N6 ]1 W. Q3 N1 u% l. p4 lpopulace to be in touch with and appreciate science, the authors and editors
+ C7 j5 K- [! h7 T1 H0 R- d% Tshould at least present the readers with facts within the proper context,
3 c" i2 [- N d. Z! |! R K9 M4 S: _which they blatantly failed to do.7 g9 Q4 E; {$ \8 v2 Y! e; V
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First, to identify Ye’s performance increase, Ewen Callaway compared her
( I! G+ z& \/ uOlympic 400-metre IM time with her performance at the World Championships in e7 K- e" H$ Y
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “3 w' q; l0 f) U* u
anomalous” improvement of around 7 seconds (6.72 s). In fact, her previous3 z! p& W% U: \1 N1 b( p2 [
personal best was 4:33.79 at the Asian Games in 2010. This leads to an3 ^5 X- C- \+ t$ i5 v: e# p' }7 H# P
improvement of 5.38 seconds. In a sporting event in which 0.1 s can be the- Z) \% F- M6 ]" y" w4 ~& V
difference between the gold and silver medal, I see no reason for 5.38 s to. j% D- }6 [/ y
be treated as 7 s.8 ^6 v' L: ?- Z6 u. ]. a
. k7 K" c" a) }/ R8 y B- G7 {Second, as previously pointed out, Ye is only 16 years old and her body is
2 W7 ?6 f0 Q, M) }: Rstill developing. Bettering oneself by 5 seconds over two years may seem: A, L0 n" v, ^
impossible for an adult swimmer, but it certainly happens among youngsters.
$ ~% C, p4 Z8 z$ eAn interview with Australian gold medallist Ian Thorpe revealed that his 400, N! w- R% _: t; T- O* G
-metre freestyle time improved by 5 seconds between the ages of 15 and 16.) L# x& G4 A4 s g3 O) O% E* F7 N
For regular people, including Callaway, it may be hard to imagine what an
% A# O& _: R- a, f9 ]# x" G( X, w$ Eelite swimmer can achieve as he or she matures and undergoes scientific and
& J; ~# o8 J5 e- H$ Gpersistent training. But jumping to the conclusion that it is “anomalous”
- k j& P7 H% [8 D& `, a1 Xbased on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.1 _$ d5 m; W6 C) \' K
; n6 v9 d: h2 R" h1 `Third, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook
& a( F* ?" i$ D# zexample of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in
( V! u+ w/ D+ K) t$ Zthe last 50 metres, but Lochte had a huge lead in the first 300 metres, so, e* L4 o- N. W
he chose not to push himself too hard and to conserve his energy for later1 e' H& ~9 B+ r4 l
events (whether this conforms to the Olympic spirit and the ‘use one’s6 f# a- ]2 _- Z0 {8 O
best efforts to win a match’ requirement that the Badminton World6 B/ }, Q- k1 q- `- t
Federation recently invoked to disqualify four badminton pairs is another
5 _6 L }! a9 \topic worth discussing, though probably not in Nature). Ye, on the other+ U, Q3 ]: Y' n9 R/ ]) O: H
hand, was trailing behind after the first 300 metres and relied on freestyle2 z/ S6 }( g/ e2 \3 D
, in which she has an edge, to win the race. Failing to mention this
8 F+ z, z2 i: s2 mstrategic difference, as well as the fact that Lochte is 23.25 seconds
. Y2 b& Q; V; ~) f: v. @9 }6 kfaster (4:05.18) than Ye overall, creates the illusion that a woman swam. C4 |$ H) S5 y1 O# X
faster than the best man in the same sport, which sounds impossible. Putting/ }& |( F- N- ]# ?. c" g
aside the gender argument, I believe this is still a leading question that
% A5 x1 L3 D7 h; @7 `" L5 Uimplies to the reader that there is something fishy going on.2 V5 ^0 H8 R6 K0 z- i' Y
" o: o3 m7 W( R1 T' l9 [Fourth is another example of cherry-picking. In the same event, there are/ l4 N9 H S. {+ l E3 c& L
four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93
: q* a0 f% G( U3 p. i2 y8 vs) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s
$ }& k3 n4 I, X( i2 d), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns
3 ?1 z1 m8 N8 ~/ P% H' @out, if we are just talking about the last 50 metres in a 400-metre IM,! h0 G, e' V% q: S0 J$ x3 Y- ]
Lochter is not the example I would have used if I were the author. What kind: V: c& P' c; p! ~) Q
of scientific rigorousness is Callaway trying to demonstrate here? Is it
$ \: b0 a$ R3 G! F& W/ Klogical that if Lochter is the champion, we should assume that he leads in$ Y6 [& A7 a' P/ f/ Z+ e9 M
every split? That would be a terrible way to teach the public how science
4 [1 {3 r$ X" j3 ?. |* o4 y$ g' Mworks.
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" D( `9 m9 j+ _+ _6 W: oFifth is the issue I oppose the most. Callaway quotes Ross Tucker and {$ @& b1 O0 Y8 y! P% o$ n
implies that a drug test cannot rule out the possibility of doping. Is this
0 A5 C7 S/ V1 _& O# [: q! ]kind of agnosticism what Nature really wants to teach its readers? By that# a, z# T9 H$ h: E9 H) I( T
standard, I estimate that at least half of the peer-reviewed scientific
0 j( ]2 t4 `- t ypapers in Nature should be retracted. How can one convince the editors and
( f0 L8 u- h! ~3 `reviewers that their proposed theory works for every possible case? One
8 C; N6 _1 e$ `5 l( `# {) x2 bcannot. One chooses to apply the theory to typical examples and to& ]" Q4 k$ e: @2 z: |7 b0 D
demonstrate that in (hopefully) all scenarios considered, the theory works
+ v: e S9 n; j8 D, U( z; D: C. J) ?5 tto a degree, and that that should warrant publication until a counterexample) d' G3 }" p6 r4 N, W z! ^7 S
is found. I could imagine that Callaway has a sceptical mind, which is
' K, M' g: y3 H: L- ~- Ncrucial to scientific thinking, but that would be put to better use if he
2 P; l7 W2 g( `0 M6 g- U0 S( o/ ~wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly
& x' [, E M8 I- s; madvanced, non-detectable drug that the Chinese have come up with in the
x" N/ t) n. N- O$ N. v+ e. epast 4 years (they obviously did not have it in Beijing, otherwise why not" u: `+ U0 o+ t8 P. M
use it and woo the audience at home?), based on data and rational derivation9 R% {% q7 d' q8 w: f f; V; y
. This article, however, can be interpreted as saying that all athletes are2 p: D8 o+ j4 \7 [% H7 h4 ]
doping and the authorities are just not good enough to catch them. That may
9 t" l: S; `7 q, w0 k; ~/ L6 \: `be true, logically, but definitely will not make the case if there is ever a
" A* A& Z) i4 \8 yhearing by the governing body for water sports, FINA, to determine if Ye# X. I4 N6 V: F& R9 W
has doped. To ask whether it is possible to obtain a false negative in a
+ H7 C8 X# ^) Z, B% r8 a4 D! Wdrug test looks like a rigged question to me. Of course it is possible:+ y9 ~' B2 X) y' e
other than the athlete taking a drug that the test is not designed to detect
6 u, Z- t; N5 _' {) [, anyone who has taken quantum 101 will tell you that everything is
% w% Q' f! g. `4 Kprobabilistic in nature, and so there is a probability that the drug in an6 v! G) J5 u0 I5 L) k
athlete’s system could tunnel out right at the moment of the test. A slight4 Z* ]3 f7 A+ b9 C& i$ M# _& S
chance it may be, but should we disregard all test results because of it?" C5 v9 _+ u& U% o
Let’s be practical and reasonable, and accept that the World Anti-Doping
" S+ ~+ ~5 w% } d: ? `" {8 Aagency (WADA) is competent at its job. Ye’s urine sample will be stored for( Y; {& G3 k; M! l7 r+ l( P/ v( c
eight years after the contest for future testing as technology advances./ y' C. x/ c" ~1 p# e
Innocent until proven guilty, shouldn’t it be?
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% y# C5 J* r# G, y& eSixth, and the last point I would like to make, is that the out-of-4 d! N! D* [3 ?: `% ]2 W
competition drug test is already in effect, which Callaway failed to mention
6 s) A7 b, g y* K4 b. As noted in the president of WADA’s press release, drug testing for
! k! U: M! S0 F+ `% `6 }: n* C3 |Olympians began at least six months before the opening of the London' E2 t( b3 L* |
Olympics. Furthermore, 107 athletes have been banned from this Olympics for! j# V5 u7 b/ d
doping. That may be the reason that “everyone will pass at the Olympic
& q; F- V4 a3 y1 Q/ s" d# u o3 cgames. Hardly anyone fails in competition testing” — those who did dope* F4 f* @( [/ T% Q
have already been caught and sanctioned. Callaway is free to suggest that a
) a+ R0 \1 L; I- Bplayer could have doped beforehand and fooled the test at the game, but this0 i9 d* a/ O. w
possibility is certainly ruled out for Ye.
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Over all, even though Callaway did not falsify any data, he did (; D8 z5 r. {* {) Z$ I8 H
intentionally or not) cherry-pick data that, in my view, are far too
. W; a% Q1 V3 Wsuggestive to be fair and unbiased. If you want to cover a story of a" f# h5 x+ F1 Q. Y3 w
suspected doping from a scientific point of view, be impartial and provide8 @% r/ T3 f: A' S* y3 i
all the facts for the reader to judge. You are entitled to your8 _+ B- e4 h0 y5 D* { x/ @9 L
interpretation of the facts, and the expression thereof in your piece,
$ U# X* `: P+ X3 a$ @/ Eexplicitly or otherwise, but showing only evidence that favours your7 p2 H/ w* n9 f
argument is hardly good science or journalism. Such an article in a journal
" @; U5 N6 Y5 Z: msuch as Nature is not an appropriate example of how scientific research or
+ _& K; ?; {0 F, \) i( V( h, U* E0 f. zreporting should be done. |
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