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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
: O; ~9 z6 t( K' A$ V# H6 }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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2 `& W: _/ G, c$ w) @http://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html
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0 V# N. U, i9 p$ wFROM LAI JIANG, Department of Chemistry, University of Pennsylvania! L/ _9 v+ B/ u* y. N( X
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It is a shame to see Nature — which nearly all scientists, including myself
0 i" [0 L+ @7 N7 v9 F) g+ u/ d, regard as one of the most prestigious and influential physical-science
2 f9 r4 e- n7 O) l& Cmagazines — publish a thinly veiled biased article like this. Granted, this
) w3 A, T4 J {: dis not a peer-reviewed scientific article and did not go through the
# o0 d) D* m( M/ s; s5 t7 Ascrutiny of picking referees. But to serve as a channel for the general4 b: E6 S8 |- Y' }/ _
populace to be in touch with and appreciate science, the authors and editors
0 R7 @5 c& y5 o+ I! X% F: Dshould at least present the readers with facts within the proper context,
: q2 r7 t5 ]: y C/ X/ Y9 xwhich they blatantly failed to do.; A# f% P1 F1 N. p6 O
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First, to identify Ye’s performance increase, Ewen Callaway compared her- B# A3 c' c; [! d: c* D
Olympic 400-metre IM time with her performance at the World Championships in4 L5 {& ?8 B+ A; \& T
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “
+ G: a3 l. Z/ n C( |anomalous” improvement of around 7 seconds (6.72 s). In fact, her previous
* }# U6 S1 y \; h2 a1 R0 ppersonal best was 4:33.79 at the Asian Games in 2010. This leads to an; v" S. h9 @. q. o4 T6 C! B j1 c
improvement of 5.38 seconds. In a sporting event in which 0.1 s can be the) U+ G! ?+ G+ l, Q" r
difference between the gold and silver medal, I see no reason for 5.38 s to
! ?( S6 W: S9 l' z2 D# ~' q; xbe treated as 7 s.
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5 Q/ l6 E( Y1 u, ]# SSecond, as previously pointed out, Ye is only 16 years old and her body is# w9 |' J7 C& i3 v
still developing. Bettering oneself by 5 seconds over two years may seem- u" j+ f1 l! v+ x4 V7 q9 B& [
impossible for an adult swimmer, but it certainly happens among youngsters.
1 h1 Y; G5 @ o; k* g# l, wAn interview with Australian gold medallist Ian Thorpe revealed that his 400
! I6 |( a+ ^ ?9 Z* a/ q-metre freestyle time improved by 5 seconds between the ages of 15 and 16.
0 d* j' D/ E) e# }6 lFor regular people, including Callaway, it may be hard to imagine what an
9 ]( Y: q7 H# ]4 c4 Ielite swimmer can achieve as he or she matures and undergoes scientific and
1 z! {+ M8 O- Z* Tpersistent training. But jumping to the conclusion that it is “anomalous”
" _- U- {; m. Z! v+ @based 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
. T: Z5 f" ~- u" k. z% Fexample of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in
: z! i) G9 Z/ \( D( R! i* p; l5 H/ lthe last 50 metres, but Lochte had a huge lead in the first 300 metres, so
4 ?0 j' n A# {2 Whe chose not to push himself too hard and to conserve his energy for later i3 W( l% j; R8 F/ Q0 ~: P1 D
events (whether this conforms to the Olympic spirit and the ‘use one’s
9 O+ S# u; }3 o; F; ]/ A$ W" dbest efforts to win a match’ requirement that the Badminton World
3 D5 m4 Z1 n, V( ZFederation recently invoked to disqualify four badminton pairs is another" L1 X4 F/ H; A! H
topic worth discussing, though probably not in Nature). Ye, on the other
" A, x/ W" O5 ^- t2 U" _4 E' c$ B9 Jhand, was trailing behind after the first 300 metres and relied on freestyle) u* M0 W5 }! E8 r' B0 z2 y: S
, in which she has an edge, to win the race. Failing to mention this
; X, y) L1 Q. u4 Gstrategic difference, as well as the fact that Lochte is 23.25 seconds
" s% ]+ \, E8 r$ `5 p$ U- R2 Z7 V5 y" Yfaster (4:05.18) than Ye overall, creates the illusion that a woman swam
* m3 Y4 b6 R# u' e( f0 k; efaster than the best man in the same sport, which sounds impossible. Putting! Q3 \/ g4 u$ ^. N
aside the gender argument, I believe this is still a leading question that
$ b: l/ n5 l9 e& R* F& T3 qimplies 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 are
' I- ?9 \# z8 a0 R) S$ n7 T! J3 Qfour male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93: J: \& ]6 U+ U8 c2 \. k# F
s) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s8 z& `3 q6 _: a7 K
), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns
/ c k" Y2 C* Y6 i' D x! xout, if we are just talking about the last 50 metres in a 400-metre IM,% d4 [8 c, m) H! w2 V$ |
Lochter is not the example I would have used if I were the author. What kind
: y: t. v/ n3 z$ dof scientific rigorousness is Callaway trying to demonstrate here? Is it5 R, F3 [& X) ~5 `! n% b( K
logical that if Lochter is the champion, we should assume that he leads in! M' F A% f: U: v
every split? That would be a terrible way to teach the public how science# `4 B" h% L+ Y7 w0 w
works.
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6 S, R7 Z0 D0 s7 P* TFifth is the issue I oppose the most. Callaway quotes Ross Tucker and/ r! y3 @! ]# C+ _ }! g/ Z
implies that a drug test cannot rule out the possibility of doping. Is this. R: V, |& ^) w1 B3 `% J0 n8 f
kind of agnosticism what Nature really wants to teach its readers? By that @. G1 U$ w9 ^/ U/ l
standard, I estimate that at least half of the peer-reviewed scientific2 Y( D' V% _0 {- M
papers in Nature should be retracted. How can one convince the editors and
+ N+ R7 k# G9 V3 R Z: H" t: ?reviewers that their proposed theory works for every possible case? One0 v* g, e- ~1 i& X5 z1 x) S( `. y
cannot. One chooses to apply the theory to typical examples and to
. ]4 [7 o7 l _demonstrate that in (hopefully) all scenarios considered, the theory works
+ n; `4 l7 S1 q# K8 |; V* ^- ?to a degree, and that that should warrant publication until a counterexample
9 A3 }3 y; G" v) @: ?6 y& r: u: Bis found. I could imagine that Callaway has a sceptical mind, which is
( b9 U4 k8 O3 v _& ycrucial to scientific thinking, but that would be put to better use if he- |9 c' y W0 a1 H( W1 _4 K
wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly, u; f) Y* Q% X: e
advanced, non-detectable drug that the Chinese have come up with in the$ X& m9 J. |+ k0 u) V# ^
past 4 years (they obviously did not have it in Beijing, otherwise why not
2 J+ k! x4 X7 z* R) `9 k! ouse it and woo the audience at home?), based on data and rational derivation
6 d0 Q, \/ W3 b5 ^. This article, however, can be interpreted as saying that all athletes are% W, w# o, d' e7 }; ^ n$ _
doping and the authorities are just not good enough to catch them. That may0 Z: r2 X, J- Q* S9 ]
be true, logically, but definitely will not make the case if there is ever a, e( b2 t# K5 _$ i
hearing by the governing body for water sports, FINA, to determine if Ye* |2 D% |; i' x+ z$ m; U4 k
has doped. To ask whether it is possible to obtain a false negative in a
. @. \/ a; X7 d3 b2 Sdrug test looks like a rigged question to me. Of course it is possible:" v7 H* k1 q8 M
other than the athlete taking a drug that the test is not designed to detect. X5 F0 K$ _# G3 X! u& w
, anyone who has taken quantum 101 will tell you that everything is& E8 A4 j( f% f) P+ r) \, h* `8 c
probabilistic in nature, and so there is a probability that the drug in an
: r7 t( o/ G$ L; O; l G7 Sathlete’s system could tunnel out right at the moment of the test. A slight
3 V) W* P- l8 I# l6 Ychance it may be, but should we disregard all test results because of it?) o( L+ I, h6 |: O( }3 t0 ^/ g
Let’s be practical and reasonable, and accept that the World Anti-Doping
9 q& }2 L2 L* Z7 X/ Bagency (WADA) is competent at its job. Ye’s urine sample will be stored for/ G4 C) Y- q/ }+ ?
eight years after the contest for future testing as technology advances.; K3 B2 j6 _+ q6 ]9 m$ e; o
Innocent until proven guilty, shouldn’t it be?0 R) u3 G- n' ^8 u& _; C
2 U7 O: ` @1 r+ VSixth, and the last point I would like to make, is that the out-of-
! @7 Q- W6 Z5 z" Icompetition drug test is already in effect, which Callaway failed to mention- h/ X' W( r- q$ X, x2 w2 O5 W# k* I
. As noted in the president of WADA’s press release, drug testing for
0 \/ u9 m& A1 w" q) I' L4 |Olympians began at least six months before the opening of the London
" e/ P# l7 m$ n" K& VOlympics. Furthermore, 107 athletes have been banned from this Olympics for
8 L! K9 A c$ x3 Sdoping. That may be the reason that “everyone will pass at the Olympic0 ]5 p, ] C5 p2 l0 B' g. `# n+ u- ]
games. Hardly anyone fails in competition testing” — those who did dope
& m0 u3 g/ v: z4 B4 |have already been caught and sanctioned. Callaway is free to suggest that a( b. R9 I% R3 C/ s
player could have doped beforehand and fooled the test at the game, but this
2 d# b6 O1 t" {4 t, Qpossibility is certainly ruled out for Ye.
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) S/ I3 B3 |% H W/ kOver all, even though Callaway did not falsify any data, he did (
( K6 f! A4 ~3 P1 p7 j8 d1 Qintentionally or not) cherry-pick data that, in my view, are far too* W1 z& U+ q* I& f6 R. F
suggestive to be fair and unbiased. If you want to cover a story of a. W9 @, _3 M! ~5 R
suspected doping from a scientific point of view, be impartial and provide7 V' q! O q5 O& [6 b9 T/ \
all the facts for the reader to judge. You are entitled to your/ v2 d5 J7 i( e, ^2 r
interpretation of the facts, and the expression thereof in your piece,
( E R2 u( _5 H; Z$ L) a# R& Hexplicitly or otherwise, but showing only evidence that favours your5 K; T% x+ B% _' w( L- h7 R$ C
argument is hardly good science or journalism. Such an article in a journal
% s7 i: |# q( D. H! |such as Nature is not an appropriate example of how scientific research or
- ]7 W; D4 }8 V% Wreporting should be done. |
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