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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 JIANG5 v/ B# I# Q2 W; `( K
如果是中国长大的,英语能到这种程度真是很不简单。' t! O! M9 g9 K0 o: B
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http://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html
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- V# Z* P. f$ N' U1 U/ PFROM LAI JIANG, Department of Chemistry, University of Pennsylvania" \- d: G5 z, L x0 |
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It is a shame to see Nature — which nearly all scientists, including myself
2 n; V: n A4 k) F+ D3 `9 r/ T, regard as one of the most prestigious and influential physical-science2 f6 i8 @, l$ C( _) F( z
magazines — publish a thinly veiled biased article like this. Granted, this
6 j, ~9 ~- _& ~" g2 z7 iis not a peer-reviewed scientific article and did not go through the
+ }; k7 h |: Y! P1 G) gscrutiny of picking referees. But to serve as a channel for the general
: L( U9 f% m; q* U( X( Jpopulace to be in touch with and appreciate science, the authors and editors- y) q' ]% s2 Q" a
should at least present the readers with facts within the proper context,' [, U5 E9 {* [0 L
which they blatantly failed to do./ [6 B' \* r {0 w9 C+ t
% I2 I' l1 r5 ?' ~1 J' e( wFirst, to identify Ye’s performance increase, Ewen Callaway compared her
' O+ ]' q+ J0 z e* DOlympic 400-metre IM time with her performance at the World Championships in' X* M$ g. u8 l5 {9 P1 I+ \
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “
+ a5 f. q! c9 x( Z2 l# z. G+ Ranomalous” improvement of around 7 seconds (6.72 s). In fact, her previous
5 R( X- E' Q, [) D" ypersonal best was 4:33.79 at the Asian Games in 2010. This leads to an$ x- H, i I3 m9 N
improvement of 5.38 seconds. In a sporting event in which 0.1 s can be the- i# i% G8 d" B
difference between the gold and silver medal, I see no reason for 5.38 s to! Q. V* w8 M* b' Q$ r+ f0 g" K
be treated as 7 s.
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* f* M6 l |* ^Second, as previously pointed out, Ye is only 16 years old and her body is1 K& y! g |* V# V1 a# J; O
still developing. Bettering oneself by 5 seconds over two years may seem* P% @# o$ J L* O% s
impossible for an adult swimmer, but it certainly happens among youngsters.
; t i1 a/ L" e" W' f- xAn interview with Australian gold medallist Ian Thorpe revealed that his 400- D/ u9 E. _6 ?( \/ c
-metre freestyle time improved by 5 seconds between the ages of 15 and 16.$ Y, M% s$ d+ f: `8 }' l+ {
For regular people, including Callaway, it may be hard to imagine what an
4 ?7 P* P/ W+ Welite swimmer can achieve as he or she matures and undergoes scientific and& h" e+ W+ o9 t4 w$ V' O' r
persistent training. But jumping to the conclusion that it is “anomalous”! u# Q" o& a. a5 o
based on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.
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/ G- _- K$ Y( y. ^8 J4 y2 f; oThird, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook
! q k8 u! p8 ^example of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in
& F( B* B; G" K: c5 zthe last 50 metres, but Lochte had a huge lead in the first 300 metres, so
1 F$ F0 a5 N, @; Dhe chose not to push himself too hard and to conserve his energy for later
7 \4 d" j+ U0 K7 d6 a0 p& c6 m0 `events (whether this conforms to the Olympic spirit and the ‘use one’s! z: E" v6 C8 T
best efforts to win a match’ requirement that the Badminton World* i( p3 Z) L+ g/ b4 j/ {& B/ T
Federation recently invoked to disqualify four badminton pairs is another
1 |) U4 i' @$ t; ]4 Itopic worth discussing, though probably not in Nature). Ye, on the other6 `/ D" N6 ]- L* J: o: j d/ ?
hand, was trailing behind after the first 300 metres and relied on freestyle) `. t b+ z& O Z
, in which she has an edge, to win the race. Failing to mention this
9 j3 i( ^8 N; l& W1 V7 Pstrategic difference, as well as the fact that Lochte is 23.25 seconds e5 a! _# k& v& Z+ k2 j' ?, U
faster (4:05.18) than Ye overall, creates the illusion that a woman swam' f; S y* J% h8 \* v, z6 L
faster than the best man in the same sport, which sounds impossible. Putting
! P: J) A7 z3 P6 W1 v/ Raside the gender argument, I believe this is still a leading question that
3 _5 r) T! v% G/ A1 x4 m* ]. k' ^implies to the reader that there is something fishy going on.
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j* U, M* Q% W- Y6 k: Q/ dFourth is another example of cherry-picking. In the same event, there are Y) D* ^! _8 L
four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93, Q, W3 ?" a" P& d( c3 g5 c
s) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s
$ ~# @. G; l, ]), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns$ `, |% t7 C' V1 c8 b+ Y* R
out, if we are just talking about the last 50 metres in a 400-metre IM,; r/ m6 b$ w4 H5 s$ { {5 j& r
Lochter is not the example I would have used if I were the author. What kind
* j. g% p% s3 R R* lof scientific rigorousness is Callaway trying to demonstrate here? Is it2 r c% e0 b5 \8 ?1 N. f# H
logical that if Lochter is the champion, we should assume that he leads in+ V7 Q$ N7 N' Q6 t. O
every split? That would be a terrible way to teach the public how science
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Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and/ P+ ^' d+ H) D! m( z2 w& \
implies that a drug test cannot rule out the possibility of doping. Is this
* P( K4 V4 k J7 Kkind of agnosticism what Nature really wants to teach its readers? By that
6 k- b5 @2 Z7 [' L0 d7 Jstandard, I estimate that at least half of the peer-reviewed scientific7 F2 z) F5 l' z- i0 ~- z* s( U3 I: _
papers in Nature should be retracted. How can one convince the editors and! j |( z; M9 l3 L+ f7 y8 u; {
reviewers that their proposed theory works for every possible case? One
( o" j6 ]# A; |- z% c2 H; y9 ]( w, fcannot. One chooses to apply the theory to typical examples and to
6 T; y) f" \& _/ S" odemonstrate that in (hopefully) all scenarios considered, the theory works& @- w2 @0 a+ q6 P# a, {
to a degree, and that that should warrant publication until a counterexample U) y& W, M* @+ h. }8 b% ^+ _! z
is found. I could imagine that Callaway has a sceptical mind, which is9 M( c: ]! p L7 | f( E) b& P
crucial to scientific thinking, but that would be put to better use if he
- n: ~7 I0 m: \wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly
# U" a- T( ]3 d4 t# e& Y7 ? e) Zadvanced, non-detectable drug that the Chinese have come up with in the3 l E( ?0 J; s9 V. S% Y
past 4 years (they obviously did not have it in Beijing, otherwise why not: j# D0 [, P) g5 s# j2 `
use it and woo the audience at home?), based on data and rational derivation6 R" G0 P" ^/ S2 c) o* q
. This article, however, can be interpreted as saying that all athletes are
( O- A3 v( e2 [( l: f6 o" h* hdoping and the authorities are just not good enough to catch them. That may$ {% P7 f- R2 @3 ]+ p$ I
be true, logically, but definitely will not make the case if there is ever a
+ A' L/ @9 G) F$ E7 x ~hearing by the governing body for water sports, FINA, to determine if Ye" g$ ]9 k# y/ s, V1 D
has doped. To ask whether it is possible to obtain a false negative in a
( G6 w- \7 @- b& @# g. pdrug test looks like a rigged question to me. Of course it is possible:
; ?) M; j; g: s+ f3 c8 D/ M2 zother than the athlete taking a drug that the test is not designed to detect
" [. D) P8 G3 b2 `, anyone who has taken quantum 101 will tell you that everything is' y% x' `$ Q& A) s) P, B4 Y' z
probabilistic in nature, and so there is a probability that the drug in an3 Y0 I8 u7 y6 {2 \$ }
athlete’s system could tunnel out right at the moment of the test. A slight
+ y# t+ [, g8 zchance it may be, but should we disregard all test results because of it?% Y- X/ {! D4 l( l% T* H# ?
Let’s be practical and reasonable, and accept that the World Anti-Doping- r5 g1 T. p1 q$ [" D" n( r+ d
agency (WADA) is competent at its job. Ye’s urine sample will be stored for* ]3 y3 |4 s* f3 |* \& _
eight years after the contest for future testing as technology advances.
0 d4 Y5 l8 `( [' W6 e# k3 t% ZInnocent 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-; Q; z5 q; r3 u1 i! j* W
competition drug test is already in effect, which Callaway failed to mention7 T2 b& a2 u/ @1 H3 U Z1 g# X
. As noted in the president of WADA’s press release, drug testing for& L- ^( W# q0 F& `, e+ [
Olympians began at least six months before the opening of the London1 w g1 j7 d5 |, ]
Olympics. Furthermore, 107 athletes have been banned from this Olympics for
! x, e \2 t0 S9 k; m& vdoping. That may be the reason that “everyone will pass at the Olympic, F5 X8 X8 ^, ~. n9 L" w, h9 V
games. Hardly anyone fails in competition testing” — those who did dope, G! f" \' C! R7 s1 A
have already been caught and sanctioned. Callaway is free to suggest that a
, v, T9 I" b2 Q q8 G q8 wplayer could have doped beforehand and fooled the test at the game, but this9 F$ l' V! O' o# N: w
possibility is certainly ruled out for Ye.4 t1 j, |5 }4 X; \+ W
; D$ Y; h% O1 B% [: GOver all, even though Callaway did not falsify any data, he did (
3 A. v* G( d' J( y. `/ xintentionally or not) cherry-pick data that, in my view, are far too% P9 Y8 w _0 H2 D$ S6 ]1 d3 H4 A
suggestive to be fair and unbiased. If you want to cover a story of a {1 t8 m6 V( l$ Q" s# W
suspected doping from a scientific point of view, be impartial and provide+ Z+ D/ L" ~- R4 D1 S4 B% S+ T
all the facts for the reader to judge. You are entitled to your8 y& D2 ^8 V' q
interpretation of the facts, and the expression thereof in your piece,
5 O( ]. i0 O! l' ^ ~$ B2 ^+ dexplicitly or otherwise, but showing only evidence that favours your0 j. |; g6 s/ w% D* L$ j6 \7 P
argument is hardly good science or journalism. Such an article in a journal. `1 w1 z' S+ p! X f
such as Nature is not an appropriate example of how scientific research or
/ H- W0 Q! v' E! z% o& wreporting should be done. |
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