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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 JIANG8 n4 B% V! D7 y7 A: ?7 @( W2 U
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
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8 l( }. D+ f: E0 t0 w% S# C/ bIt is a shame to see Nature — which nearly all scientists, including myself7 {0 _: m5 Q$ }1 b
, regard as one of the most prestigious and influential physical-science
3 C4 A# y" @' j' ?3 Xmagazines — publish a thinly veiled biased article like this. Granted, this- Z$ h" T- J8 D' }3 l# ?
is not a peer-reviewed scientific article and did not go through the$ m+ l7 h4 ~7 ^8 J
scrutiny of picking referees. But to serve as a channel for the general
3 Q+ k4 s7 d; S5 Tpopulace to be in touch with and appreciate science, the authors and editors# I0 L+ y( P3 w" [8 R
should at least present the readers with facts within the proper context,
. x4 i% w% C9 N( w% Fwhich they blatantly failed to do.
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First, to identify Ye’s performance increase, Ewen Callaway compared her4 I6 i" G5 L: ]9 t
Olympic 400-metre IM time with her performance at the World Championships in" L# K$ @- H: ~
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “
$ i1 b" y7 ~( v {4 yanomalous” improvement of around 7 seconds (6.72 s). In fact, her previous
+ \) ], W2 y0 Gpersonal best was 4:33.79 at the Asian Games in 2010. This leads to an1 o9 J" |. r. D
improvement of 5.38 seconds. In a sporting event in which 0.1 s can be the
+ D/ t! X8 w, _ Z" K+ g4 Jdifference between the gold and silver medal, I see no reason for 5.38 s to
8 y9 W; I" F0 I8 Ebe treated as 7 s.
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Second, as previously pointed out, Ye is only 16 years old and her body is: _) j, u% H- c/ C. j9 L
still developing. Bettering oneself by 5 seconds over two years may seem! C- t8 P: h" J# F$ S+ U
impossible for an adult swimmer, but it certainly happens among youngsters.
. {: g$ J/ m5 n% g8 O0 q! X4 \An interview with Australian gold medallist Ian Thorpe revealed that his 4006 L" v; z0 W: J0 B2 W1 Q/ @
-metre freestyle time improved by 5 seconds between the ages of 15 and 16.) c8 Y& [! u2 S
For regular people, including Callaway, it may be hard to imagine what an
3 Z$ @1 l& u& C( d& ?3 nelite swimmer can achieve as he or she matures and undergoes scientific and P t+ s; F; ?8 g, C$ v
persistent training. But jumping to the conclusion that it is “anomalous”0 ~4 b$ o- u- }
based on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.1 y. ]/ k. K& }" K, P
( e; j' o5 Z* Q3 GThird, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook
% _+ U3 M; ^& yexample of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in& u( V# Z% R" ]2 a! Y
the last 50 metres, but Lochte had a huge lead in the first 300 metres, so' _- N8 d. m& U1 a7 a
he chose not to push himself too hard and to conserve his energy for later
1 K8 Y& m: f; |2 E: _3 F$ Zevents (whether this conforms to the Olympic spirit and the ‘use one’s
/ I+ e, M+ a, S- S: o! ]' L! C. Pbest efforts to win a match’ requirement that the Badminton World
# \6 Y9 P. E3 W6 D b+ ]Federation recently invoked to disqualify four badminton pairs is another
& v/ S6 q" q/ j. K3 mtopic worth discussing, though probably not in Nature). Ye, on the other
3 s4 T" J2 m% ?4 nhand, was trailing behind after the first 300 metres and relied on freestyle4 E+ v5 r6 h) ~4 f8 p( u
, in which she has an edge, to win the race. Failing to mention this
- X9 }' c7 k( G, Sstrategic difference, as well as the fact that Lochte is 23.25 seconds
) ~4 C& Z* D5 N5 e+ m* b7 \faster (4:05.18) than Ye overall, creates the illusion that a woman swam
5 ?' v9 p$ U, g: dfaster than the best man in the same sport, which sounds impossible. Putting
$ o/ A* W; r: Q& Easide the gender argument, I believe this is still a leading question that% d" M- K9 Z: E, [) G( \9 t$ b. J. P
implies to the reader that there is something fishy going on.0 _! u- r4 m, C3 J$ H) v. U+ H
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Fourth is another example of cherry-picking. In the same event, there are2 \5 Q& ~# ^0 [
four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93
! S0 G0 \* F4 A$ Y) b" p' U& i5 Fs) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s
. Z* _' P7 F4 Y2 V) h), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns8 `$ e6 z5 t6 \+ V3 S2 O- P
out, if we are just talking about the last 50 metres in a 400-metre IM, ?- h0 j( F- O ^: n* N- f+ f
Lochter is not the example I would have used if I were the author. What kind! \9 |' E( r0 ^5 Q! B
of scientific rigorousness is Callaway trying to demonstrate here? Is it5 y+ \9 F5 o, h o, t( ~
logical that if Lochter is the champion, we should assume that he leads in: a0 N) {: \; \! }, S
every split? That would be a terrible way to teach the public how science' o* p7 M5 Q+ a0 ~, b" z
works.) Y, j# G$ @, S; y* A
+ R; I2 `9 c) l/ A7 ^; _3 ^; ]% WFifth is the issue I oppose the most. Callaway quotes Ross Tucker and
7 H3 R+ \3 F j+ }: g1 s' E" dimplies that a drug test cannot rule out the possibility of doping. Is this
3 B: @. t4 L. E6 X$ ^" Rkind of agnosticism what Nature really wants to teach its readers? By that
& \. F X8 T2 R2 Dstandard, I estimate that at least half of the peer-reviewed scientific$ j2 p/ {- Y7 h; u* U2 s
papers in Nature should be retracted. How can one convince the editors and
1 J! W4 d' r8 S: A9 a/ mreviewers that their proposed theory works for every possible case? One6 u, d% | w! c/ @7 O: h
cannot. One chooses to apply the theory to typical examples and to9 D7 t) q. b2 S8 X" J8 W* L
demonstrate that in (hopefully) all scenarios considered, the theory works4 p7 q0 ?* }/ x5 T: a
to a degree, and that that should warrant publication until a counterexample
2 o' f7 d4 B2 b6 x+ F) dis found. I could imagine that Callaway has a sceptical mind, which is
& T: }! L4 p& q* J: }; `crucial to scientific thinking, but that would be put to better use if he1 O8 s5 N9 U, U4 |7 u; v( p6 H
wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly
; k& p5 S1 Q5 v' R* }+ u1 xadvanced, non-detectable drug that the Chinese have come up with in the
. t4 L! M8 l" Z4 I$ `5 z$ vpast 4 years (they obviously did not have it in Beijing, otherwise why not
& N. n, Z2 X# |9 euse it and woo the audience at home?), based on data and rational derivation
, X' m1 K( {- y4 a5 h: B. This article, however, can be interpreted as saying that all athletes are
f* C; [# T3 Y' v+ \# T0 Kdoping and the authorities are just not good enough to catch them. That may0 n+ W6 j' A% \5 V
be true, logically, but definitely will not make the case if there is ever a% k" z( @: J0 {# ?& u
hearing by the governing body for water sports, FINA, to determine if Ye5 r8 p6 T% _6 O( E3 ]
has doped. To ask whether it is possible to obtain a false negative in a6 ?7 k% x8 y& O. q
drug test looks like a rigged question to me. Of course it is possible:
6 u7 P: ~/ t* L& K( ~other than the athlete taking a drug that the test is not designed to detect1 l" g* `: q* G: S1 T
, anyone who has taken quantum 101 will tell you that everything is
1 s/ t9 l' u! I; ~* j( mprobabilistic in nature, and so there is a probability that the drug in an& {- A: O( Y1 n" d) w' d7 w6 d/ R
athlete’s system could tunnel out right at the moment of the test. A slight
) ^# s! U8 l' t6 Cchance it may be, but should we disregard all test results because of it?
1 a; O: u" T+ `) r3 aLet’s be practical and reasonable, and accept that the World Anti-Doping" ~0 W: |$ J6 {1 P' o; [4 `
agency (WADA) is competent at its job. Ye’s urine sample will be stored for7 D+ t! Q) \" K; d. V, ?5 F: q
eight years after the contest for future testing as technology advances.
* I( N i H/ J& c! RInnocent until proven guilty, shouldn’t it be?
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: _6 M6 R1 O! h; I8 JSixth, and the last point I would like to make, is that the out-of-$ n0 p$ z2 _, @6 q8 k
competition drug test is already in effect, which Callaway failed to mention
, f' x! F! f- H. As noted in the president of WADA’s press release, drug testing for
9 [9 x0 p0 O$ r! E8 QOlympians began at least six months before the opening of the London- I# j1 M% Z. F
Olympics. Furthermore, 107 athletes have been banned from this Olympics for; l0 T# g# X& G5 v! m0 w+ F
doping. That may be the reason that “everyone will pass at the Olympic
) [$ d6 k* E' B+ t0 z8 |games. Hardly anyone fails in competition testing” — those who did dope
( ~! Z+ N4 m0 k9 w$ xhave already been caught and sanctioned. Callaway is free to suggest that a
- g/ q( k+ {9 d7 d6 Mplayer could have doped beforehand and fooled the test at the game, but this
! ]/ k0 l& ^3 L/ Jpossibility is certainly ruled out for Ye.
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Over all, even though Callaway did not falsify any data, he did (0 K0 L+ @2 L9 N4 F" m
intentionally or not) cherry-pick data that, in my view, are far too
6 }8 j4 R$ b5 R8 {; ?! Q( R! q: z' Q1 {suggestive to be fair and unbiased. If you want to cover a story of a
2 s0 ?( m J D/ e5 I6 |* N+ Jsuspected doping from a scientific point of view, be impartial and provide
0 L% [- h) T9 N8 K: I, Yall the facts for the reader to judge. You are entitled to your
0 G) B( G4 h4 v7 t+ }- V, Pinterpretation of the facts, and the expression thereof in your piece,
+ r W0 a% G7 @8 f! Z1 [- \explicitly or otherwise, but showing only evidence that favours your6 U2 z* x- l% y6 k
argument is hardly good science or journalism. Such an article in a journal. c; \; D# J4 z, i2 R7 E" m6 ^! k
such as Nature is not an appropriate example of how scientific research or
. k1 V* c+ f8 s ]1 ureporting should be done. |
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