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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
/ B; w* e$ M. R/ P6 I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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7 X7 G0 K6 h9 ]9 z: A6 Ihttp://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html. t6 E1 G1 D! b2 e% C
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FROM LAI JIANG, Department of Chemistry, University of Pennsylvania: I" t6 ?; ?9 t; _1 X
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It is a shame to see Nature — which nearly all scientists, including myself( L$ |: E; i. W# m, O$ o2 r
, regard as one of the most prestigious and influential physical-science4 m$ R( _1 o: e( j, `3 y% ~1 s% ^
magazines — publish a thinly veiled biased article like this. Granted, this
8 W$ _ P& F. Q3 n" g1 iis not a peer-reviewed scientific article and did not go through the
, q* E/ q( M' C2 mscrutiny of picking referees. But to serve as a channel for the general
7 N$ T% ~9 r# Spopulace to be in touch with and appreciate science, the authors and editors
' F- Q% f% O4 C( f; Z7 d; T8 Nshould at least present the readers with facts within the proper context,
- h, M' G' K% G S( Jwhich they blatantly failed to do.
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First, to identify Ye’s performance increase, Ewen Callaway compared her
$ I- V/ f ]: Y$ w) DOlympic 400-metre IM time with her performance at the World Championships in7 Q- y& x+ s& W4 a
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “
8 J. i- m& u1 Z, \anomalous” improvement of around 7 seconds (6.72 s). In fact, her previous/ h" [' ]1 P6 P* l: N: i8 E2 y# `
personal best was 4:33.79 at the Asian Games in 2010. This leads to an" f' _- p$ t( G. v( |
improvement of 5.38 seconds. In a sporting event in which 0.1 s can be the
# Q' Z) |# J- m9 h1 M7 udifference between the gold and silver medal, I see no reason for 5.38 s to6 F+ u; L% f% x) R( A! E
be treated as 7 s.
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$ U* |0 G5 m# c- `9 U( ]Second, as previously pointed out, Ye is only 16 years old and her body is8 m, l* }; k- G; r" o
still developing. Bettering oneself by 5 seconds over two years may seem
, O% x/ L* h' _5 fimpossible for an adult swimmer, but it certainly happens among youngsters.
: k- E; y1 p+ h1 G' UAn interview with Australian gold medallist Ian Thorpe revealed that his 400
( e* f8 a$ s4 [' C-metre freestyle time improved by 5 seconds between the ages of 15 and 16.' L2 C/ v P3 c. Z
For regular people, including Callaway, it may be hard to imagine what an1 P+ c" }: }+ B
elite swimmer can achieve as he or she matures and undergoes scientific and1 q" {, }3 h, S
persistent training. But jumping to the conclusion that it is “anomalous”
1 m1 F6 b( f5 g- Y9 K( r) H8 Wbased on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.
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Third, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook
( ? o' k8 j, I7 `' t9 L( b" mexample of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in7 c: N+ r- b# B; @: `, d, s+ F* d
the last 50 metres, but Lochte had a huge lead in the first 300 metres, so/ S( \& o1 J4 B( S6 x
he chose not to push himself too hard and to conserve his energy for later
8 l- y9 g8 h; ~& D9 j$ n2 ]events (whether this conforms to the Olympic spirit and the ‘use one’s
) b2 L% O# f" J, hbest efforts to win a match’ requirement that the Badminton World
& \4 f( c& b# I# s" ~$ c. QFederation recently invoked to disqualify four badminton pairs is another
; \" O& A! V3 Qtopic worth discussing, though probably not in Nature). Ye, on the other8 d8 }0 \5 u9 A) N7 T8 i
hand, was trailing behind after the first 300 metres and relied on freestyle: e% D& R- z W. F5 O# Y$ R" I
, in which she has an edge, to win the race. Failing to mention this
. y* c, Y( H0 L7 d) r0 r7 bstrategic difference, as well as the fact that Lochte is 23.25 seconds% F) ]; x( d( F$ ]1 {2 r, x
faster (4:05.18) than Ye overall, creates the illusion that a woman swam
% N! S0 m) k+ v7 b3 S1 f9 i4 jfaster than the best man in the same sport, which sounds impossible. Putting
6 S P4 H! w# I# S( _) d4 Baside the gender argument, I believe this is still a leading question that; p1 b5 l1 t1 j+ }2 x$ @" {" I' V1 K
implies to the reader that there is something fishy going on.
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Fourth is another example of cherry-picking. In the same event, there are0 M$ o. V* \' S$ F
four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93
( d' b6 D8 v) ks) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s
# v3 J. n$ N& m% p ]' a- n( {), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns* H; @' [: }- T6 |( K+ i
out, if we are just talking about the last 50 metres in a 400-metre IM,
5 [: W0 t7 ?1 q$ t, ~' cLochter is not the example I would have used if I were the author. What kind- t9 T6 e$ I6 E6 @( [5 G
of scientific rigorousness is Callaway trying to demonstrate here? Is it0 }* Q( E2 f/ k5 G
logical that if Lochter is the champion, we should assume that he leads in
9 [3 T& f# F7 O* oevery split? That would be a terrible way to teach the public how science
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/ X! o. l" q5 e& u) xFifth is the issue I oppose the most. Callaway quotes Ross Tucker and* `0 r# F; E9 X0 y+ R0 h
implies that a drug test cannot rule out the possibility of doping. Is this: [* ` {) E- O! C! q+ T5 s- k7 ^# u
kind of agnosticism what Nature really wants to teach its readers? By that
, z( t% e/ P5 q; p( ^( Tstandard, I estimate that at least half of the peer-reviewed scientific
( a& U% \% J( }7 Y' f \# ypapers in Nature should be retracted. How can one convince the editors and6 T' v8 y, {) I2 \# d: t; ~+ X
reviewers that their proposed theory works for every possible case? One8 a; C4 [2 U+ \) E$ g
cannot. One chooses to apply the theory to typical examples and to$ B |' t! X* L" G
demonstrate that in (hopefully) all scenarios considered, the theory works8 S( A" g: Z, d
to a degree, and that that should warrant publication until a counterexample
' F( n3 M4 B: M ^6 d! P2 @( Ois found. I could imagine that Callaway has a sceptical mind, which is
! X- F) k% R# R: q* Rcrucial to scientific thinking, but that would be put to better use if he1 R0 L) a: I7 A) C. {) W" N
wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly
1 [- [: b7 N$ Z8 K% j; iadvanced, non-detectable drug that the Chinese have come up with in the2 ?4 e3 J+ C6 j x: F
past 4 years (they obviously did not have it in Beijing, otherwise why not
8 V! `& R o7 { j3 a' Muse it and woo the audience at home?), based on data and rational derivation
+ e) ]9 \' P' Z @3 ^. This article, however, can be interpreted as saying that all athletes are2 G" O3 x( p9 t( ^/ D0 R, f
doping and the authorities are just not good enough to catch them. That may/ k- Q6 |% \1 q; w
be true, logically, but definitely will not make the case if there is ever a
7 N E' U) p: j) rhearing by the governing body for water sports, FINA, to determine if Ye
/ b4 H. q2 u5 Z) ^/ |1 ~! |1 Hhas doped. To ask whether it is possible to obtain a false negative in a
" ?" \1 I; x& G- ?" F2 Pdrug test looks like a rigged question to me. Of course it is possible:
: }( E: g) ?3 e4 Jother than the athlete taking a drug that the test is not designed to detect& D6 h4 G" p( `
, anyone who has taken quantum 101 will tell you that everything is' S+ e5 a# o. t. p J+ _8 d: q/ |
probabilistic in nature, and so there is a probability that the drug in an
: i) n" H9 N0 Rathlete’s system could tunnel out right at the moment of the test. A slight) M# v* F7 M5 i/ O, f$ _
chance it may be, but should we disregard all test results because of it?
, ]4 n, |: [& R9 n- YLet’s be practical and reasonable, and accept that the World Anti-Doping
@3 M0 }; W, A8 y2 M3 B5 C/ ?- }agency (WADA) is competent at its job. Ye’s urine sample will be stored for
" O+ P/ c1 t# X8 m& r/ K% j4 o5 Teight years after the contest for future testing as technology advances.+ d5 s# ^ M- _
Innocent until proven guilty, shouldn’t it be?1 q2 O( r n/ u8 F. x
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Sixth, and the last point I would like to make, is that the out-of-( n7 W1 ^9 ~ h ~' H
competition drug test is already in effect, which Callaway failed to mention
2 m- J B6 v' k* R' f8 \. As noted in the president of WADA’s press release, drug testing for
- |2 s9 d# }7 N( y/ H% |: ~3 V( m& iOlympians began at least six months before the opening of the London
9 \' f0 C9 m/ ^Olympics. Furthermore, 107 athletes have been banned from this Olympics for
6 k% @5 B6 @/ {7 z3 k& Cdoping. That may be the reason that “everyone will pass at the Olympic
: R8 S$ @# }* m8 {& u. Hgames. Hardly anyone fails in competition testing” — those who did dope. C" Q; b! f* Z- B o5 I" W
have already been caught and sanctioned. Callaway is free to suggest that a: H }& g6 O$ a+ H# s% b
player could have doped beforehand and fooled the test at the game, but this6 ^8 r4 H6 p% z1 X+ @5 H# G
possibility is certainly ruled out for Ye.* D7 C0 Q/ i/ s
$ A" b* o$ e6 x" H4 W2 M) GOver all, even though Callaway did not falsify any data, he did (
5 c/ \4 F! C8 ]6 B: ]3 Iintentionally or not) cherry-pick data that, in my view, are far too
$ _1 I8 W+ }2 V8 _/ gsuggestive to be fair and unbiased. If you want to cover a story of a5 D+ M9 N! D% F9 M, d' N
suspected doping from a scientific point of view, be impartial and provide8 v' S) x# m& x# u( `9 J% H
all the facts for the reader to judge. You are entitled to your' f7 R6 v B1 u! W2 j* W. I; B# B
interpretation of the facts, and the expression thereof in your piece,
7 O" x/ K- x6 B9 f1 Z$ I) B B- hexplicitly or otherwise, but showing only evidence that favours your" a$ L% U, V& E0 v# f8 B0 r1 p# S
argument is hardly good science or journalism. Such an article in a journal
7 }. {/ j$ }# K/ l% R' dsuch as Nature is not an appropriate example of how scientific research or
3 H) v" x; B3 k* C3 z/ r Jreporting should be done. |
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