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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
0 N0 V3 Z1 I' S9 Y2 H8 H5 V如果是中国长大的,英语能到这种程度真是很不简单。: V6 P8 S& Y, ^* g" k) k5 U9 r% ^- }
8 Y D. G: X4 l3 j% Q C bhttp://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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0 k) z/ { x: o/ b7 R* m9 rIt is a shame to see Nature — which nearly all scientists, including myself
* g+ v; ?6 ?- ] B9 M, T( Q, regard as one of the most prestigious and influential physical-science6 ]# h6 t- i8 p/ I7 h
magazines — publish a thinly veiled biased article like this. Granted, this; A5 P+ w3 `, ~
is not a peer-reviewed scientific article and did not go through the
2 ~! n& R1 d d& ]- `% B& C: K8 Qscrutiny of picking referees. But to serve as a channel for the general
- J9 i$ U- @( Y8 j) z& W* ipopulace to be in touch with and appreciate science, the authors and editors
; Q* ]; X! i8 E0 e: F, N1 s( Pshould at least present the readers with facts within the proper context,
# W* M0 x1 E2 Q9 o! dwhich they blatantly failed to do.
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. ?: U: S. P* f4 oFirst, to identify Ye’s performance increase, Ewen Callaway compared her+ o7 `7 |4 p% O7 f$ B, Z( p) K
Olympic 400-metre IM time with her performance at the World Championships in: j- k- w# C6 Q. j
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “
! S1 e( y1 g+ I. C* o2 E I9 Q4 Tanomalous” improvement of around 7 seconds (6.72 s). In fact, her previous
: P# ^: ?4 p* u" s4 n1 f- qpersonal best was 4:33.79 at the Asian Games in 2010. This leads to an
' z7 ?. q( Z4 b3 J: gimprovement of 5.38 seconds. In a sporting event in which 0.1 s can be the
1 M1 g! i# O. V" D! e5 K% wdifference between the gold and silver medal, I see no reason for 5.38 s to7 V( ^6 n x9 J% T4 x
be treated as 7 s.
6 D/ a" l4 e# D" Q [. [6 g) D: F( Z( p( ]( n$ T" \5 [+ i. i/ e
Second, as previously pointed out, Ye is only 16 years old and her body is6 R5 X8 J Y$ b' ?1 c) y5 ~
still developing. Bettering oneself by 5 seconds over two years may seem
% C8 \' m& `+ |/ ~impossible for an adult swimmer, but it certainly happens among youngsters.
v8 p+ w4 A( T' E, H# A/ X% eAn interview with Australian gold medallist Ian Thorpe revealed that his 400
$ k n* e3 }& g-metre freestyle time improved by 5 seconds between the ages of 15 and 16.# h0 B( G- J4 {
For regular people, including Callaway, it may be hard to imagine what an9 f, D! Z/ H1 h
elite swimmer can achieve as he or she matures and undergoes scientific and) k9 [4 B& m8 R1 Z! Q
persistent training. But jumping to the conclusion that it is “anomalous”6 v3 _* W) A3 t2 P& P) x2 q
based on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.5 l& P0 R" R& a |! l. c
3 i! t x# f1 ^6 L! zThird, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook
* h7 w7 H7 M h. `& dexample of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in
& ^3 J! D- z8 d- h5 @% z! Kthe last 50 metres, but Lochte had a huge lead in the first 300 metres, so: {2 ?" {5 U! Y7 ~
he chose not to push himself too hard and to conserve his energy for later3 u. e6 I8 o$ s, \, v
events (whether this conforms to the Olympic spirit and the ‘use one’s
& V3 }2 h" ~/ Y7 @best efforts to win a match’ requirement that the Badminton World
) `: f! F% ?- B$ T mFederation recently invoked to disqualify four badminton pairs is another
& E2 K2 d; z9 | D" Y/ \topic worth discussing, though probably not in Nature). Ye, on the other
# c/ Q- B6 p6 q; {- @. W; G) whand, was trailing behind after the first 300 metres and relied on freestyle
! W. J9 X) Y6 H, in which she has an edge, to win the race. Failing to mention this
; |5 y- V9 \" I! I* r) T: |strategic difference, as well as the fact that Lochte is 23.25 seconds/ l B* ~# G5 ]% K X% C
faster (4:05.18) than Ye overall, creates the illusion that a woman swam4 n2 ~8 V9 y# K3 D D ~7 c5 h
faster than the best man in the same sport, which sounds impossible. Putting' ?) _8 H, G# g* ?5 D2 z+ k3 {
aside the gender argument, I believe this is still a leading question that
, V# A$ b- `; j6 S! P {- k% h5 e, \" bimplies to the reader that there is something fishy going on.
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9 v4 S- h% W& g+ O2 t( ~* k- I# pFourth is another example of cherry-picking. In the same event, there are" T! }# @2 v$ r- ^( L/ d2 q
four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93; a3 w) P! S$ H) v/ n8 x- y
s) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s/ d8 T: Z1 U: j' y- [: w* F4 B
), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns
, F% U8 V+ f2 \ t0 Y8 ^+ Fout, if we are just talking about the last 50 metres in a 400-metre IM,8 P# d) \4 b9 B( E/ J9 b+ |) E
Lochter is not the example I would have used if I were the author. What kind2 D1 N' {4 b8 v
of scientific rigorousness is Callaway trying to demonstrate here? Is it f6 Q, E0 y3 y9 n
logical that if Lochter is the champion, we should assume that he leads in
: A3 E. q( ^7 y: R" f6 u' qevery split? That would be a terrible way to teach the public how science
+ k7 }7 T4 p* l3 t. Kworks.
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Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and
7 x2 h+ A* T2 A) G0 Q. [implies that a drug test cannot rule out the possibility of doping. Is this/ g/ p: H( z3 m- O3 l) ] W
kind of agnosticism what Nature really wants to teach its readers? By that
9 T$ r/ K3 X0 I( L% |8 fstandard, I estimate that at least half of the peer-reviewed scientific
* I, p& @" m% {6 O' Kpapers in Nature should be retracted. How can one convince the editors and
) b. q" b: O7 C* }" z6 @# _' c: Previewers that their proposed theory works for every possible case? One
+ Z9 E+ I, r6 \# h# G/ A" Gcannot. One chooses to apply the theory to typical examples and to
4 d% V4 M' b0 ^ I k+ ]demonstrate that in (hopefully) all scenarios considered, the theory works
6 g5 v! B# s3 h' `1 i3 {. Nto a degree, and that that should warrant publication until a counterexample
1 Z$ t& W* O/ ris found. I could imagine that Callaway has a sceptical mind, which is
4 M/ X. [4 j- e) Ycrucial to scientific thinking, but that would be put to better use if he
* t% b! l$ E2 Z. ywrote a peer-reviewed paper that discussed the odds of Ye doping on a highly3 B+ w8 W4 F' ?1 Y: {7 |: G
advanced, non-detectable drug that the Chinese have come up with in the4 ~% T4 Z" t2 ]; z9 Y. J8 D' _
past 4 years (they obviously did not have it in Beijing, otherwise why not, E X$ U) _, y9 {5 V$ `6 s
use it and woo the audience at home?), based on data and rational derivation
0 x0 O+ J9 `. Y% B( O4 |# E. This article, however, can be interpreted as saying that all athletes are6 z" ~" g4 d, Z) J! w6 b6 }8 l
doping and the authorities are just not good enough to catch them. That may+ \1 N* v2 ~& l' W; o, R( e: O; }
be true, logically, but definitely will not make the case if there is ever a
# ?, x" a4 m7 |/ zhearing by the governing body for water sports, FINA, to determine if Ye+ N% i5 \: t, H8 U, @# ~, ]7 T
has doped. To ask whether it is possible to obtain a false negative in a
! l! Q' O2 L/ y( @drug test looks like a rigged question to me. Of course it is possible:1 R, t: Z8 b. p* b' T- `# C
other than the athlete taking a drug that the test is not designed to detect, m/ X& r& v: ~# h2 {# ]
, anyone who has taken quantum 101 will tell you that everything is
! {' R1 P, `( aprobabilistic in nature, and so there is a probability that the drug in an
9 L$ p* a- T" o; b) o3 c5 d, j% hathlete’s system could tunnel out right at the moment of the test. A slight5 G" Y- b- D9 V1 x2 q/ n6 m
chance it may be, but should we disregard all test results because of it?
/ F& i3 o. T J7 RLet’s be practical and reasonable, and accept that the World Anti-Doping7 a8 w# J) T1 v( m; W1 {; \
agency (WADA) is competent at its job. Ye’s urine sample will be stored for* L8 n% q- H$ w% C$ B' g
eight years after the contest for future testing as technology advances.5 k; P/ F* R7 o8 P8 z
Innocent until proven guilty, shouldn’t it be?% N: m* H$ u: k# [8 G+ r: ?
l0 e+ D1 Y, ` [" B# D6 TSixth, and the last point I would like to make, is that the out-of-
7 J) x" z1 h! _9 q3 Kcompetition drug test is already in effect, which Callaway failed to mention
' y5 N: [# q9 L. As noted in the president of WADA’s press release, drug testing for
4 g* h% e0 d. ?6 s5 s i2 h% yOlympians began at least six months before the opening of the London1 `( t7 E, y# a. b
Olympics. Furthermore, 107 athletes have been banned from this Olympics for
( H$ }: {8 \' v; c! [doping. That may be the reason that “everyone will pass at the Olympic% Q( [4 X# _/ R% I7 g
games. Hardly anyone fails in competition testing” — those who did dope. B# n+ O- J$ _& ^- ]7 u
have already been caught and sanctioned. Callaway is free to suggest that a% m5 ]# Z% O x/ b
player could have doped beforehand and fooled the test at the game, but this
. x& a, P9 T: ^possibility is certainly ruled out for Ye.8 A" w( `# o" }* v* a+ P
) G7 U2 o, c' E) m/ e* ]3 gOver all, even though Callaway did not falsify any data, he did (
( n( N- ]0 e o# t1 E3 [intentionally or not) cherry-pick data that, in my view, are far too
& R0 q' W3 |& w* ~2 C6 G! C2 \$ qsuggestive to be fair and unbiased. If you want to cover a story of a
* m% Q9 q; N7 @/ W: isuspected doping from a scientific point of view, be impartial and provide
* v$ ?3 T* [" I8 l# h& z" oall the facts for the reader to judge. You are entitled to your3 M8 E. I# y" p9 z; B+ ]: q4 O6 q
interpretation of the facts, and the expression thereof in your piece,: K% A( t$ }2 V
explicitly or otherwise, but showing only evidence that favours your$ d( Q4 [$ k( X- b S
argument is hardly good science or journalism. Such an article in a journal
( ?- K8 o. g* d2 A4 c/ Hsuch as Nature is not an appropriate example of how scientific research or
% I# K4 S# a: ?# m$ dreporting should be done. |
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