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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: p: ^8 _; g! D8 k
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. P9 D" H( D6 B ]& G( f" n' ^5 Z
; j# t6 e- e; N4 lIt is a shame to see Nature — which nearly all scientists, including myself$ j8 `. Y8 L3 C) M- y! w
, regard as one of the most prestigious and influential physical-science
: r& h7 r) C4 Z0 N4 ~* mmagazines — publish a thinly veiled biased article like this. Granted, this
2 K+ |4 s( a8 s3 B2 k" Ris not a peer-reviewed scientific article and did not go through the
/ H6 F2 S$ x, J: B6 w! @scrutiny of picking referees. But to serve as a channel for the general
4 p4 b2 N: d4 ]9 G3 j1 e, B* fpopulace to be in touch with and appreciate science, the authors and editors/ T w! `( g9 v
should at least present the readers with facts within the proper context,
, j# }9 R6 p& @2 a3 l, w0 _ ewhich they blatantly failed to do.0 V. w( M+ V; j3 u
- y; q: o$ [0 q6 o" KFirst, to identify Ye’s performance increase, Ewen Callaway compared her
& k$ h3 _- P( g: F A% [4 w8 g7 ^9 JOlympic 400-metre IM time with her performance at the World Championships in
9 Z4 ^9 o# h; E. F2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “
* A5 Y1 a3 D2 ~; f3 `8 {5 Qanomalous” improvement of around 7 seconds (6.72 s). In fact, her previous7 m7 V# B+ S+ s1 g
personal best was 4:33.79 at the Asian Games in 2010. This leads to an% S q6 I) ?* c
improvement of 5.38 seconds. In a sporting event in which 0.1 s can be the' q8 y: |# o/ W: J
difference between the gold and silver medal, I see no reason for 5.38 s to7 i1 }/ C4 W! h" N( E7 S
be treated as 7 s.& H* k% x6 h" w, }
; F% W9 }) o/ `" u* cSecond, as previously pointed out, Ye is only 16 years old and her body is8 ?/ c* J- [/ o3 C. y" D: F
still developing. Bettering oneself by 5 seconds over two years may seem
0 ?7 F+ i/ \6 H2 v* y5 G9 g5 r4 jimpossible for an adult swimmer, but it certainly happens among youngsters.' { c0 D4 W8 W3 I3 v+ i* P6 x3 Z( O
An interview with Australian gold medallist Ian Thorpe revealed that his 4000 t# E% W9 U! Q+ w' P1 R
-metre freestyle time improved by 5 seconds between the ages of 15 and 16.( W$ u8 G: G0 L+ q7 h2 G. L
For regular people, including Callaway, it may be hard to imagine what an, B' g. h, F1 {2 _/ g
elite swimmer can achieve as he or she matures and undergoes scientific and# h; `9 I" E3 }- Q: I. O
persistent training. But jumping to the conclusion that it is “anomalous”
Z3 X4 j; A; t r5 N% x$ g% o* ibased on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.
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( g) b; i+ |' M OThird, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook
4 L3 l" t& l+ e9 W/ B+ u9 e4 ^example of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in7 S9 f6 N# I2 l1 v+ w# F
the last 50 metres, but Lochte had a huge lead in the first 300 metres, so
3 Y7 V8 g4 K/ L! _0 ghe chose not to push himself too hard and to conserve his energy for later' t6 E- Q1 S, c7 _7 ?
events (whether this conforms to the Olympic spirit and the ‘use one’s
" v' {% c% ~5 j" c6 vbest efforts to win a match’ requirement that the Badminton World% x7 \- R' x2 e
Federation recently invoked to disqualify four badminton pairs is another
. w4 b: c& a2 V, D/ wtopic worth discussing, though probably not in Nature). Ye, on the other
9 y6 n: p: X3 L! yhand, was trailing behind after the first 300 metres and relied on freestyle
$ }2 Y4 z! ~6 K, in which she has an edge, to win the race. Failing to mention this
* ~' S8 i0 L$ n+ e0 @. L6 estrategic difference, as well as the fact that Lochte is 23.25 seconds
& n# i" e! w2 Z- Z. l7 tfaster (4:05.18) than Ye overall, creates the illusion that a woman swam
% F) U* A. q! j H0 t% S8 @faster than the best man in the same sport, which sounds impossible. Putting0 g( m1 Y0 ^! q$ w' L# Z) M
aside the gender argument, I believe this is still a leading question that
5 u. ~2 P$ k( c7 B1 mimplies to the reader that there is something fishy going on.
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* m+ z: x! A* I& b$ zFourth is another example of cherry-picking. In the same event, there are" r- q& x, g1 j; T* P
four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93
3 f/ k1 f8 a1 H6 q% S2 N4 r) |) qs) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s0 q( v8 u" S2 H. ^; j6 y
), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns+ d4 a9 x. i% L: {5 p4 ^
out, if we are just talking about the last 50 metres in a 400-metre IM,
6 j. S$ B a' D K) a' [! LLochter is not the example I would have used if I were the author. What kind+ B9 {. X/ o; q1 |
of scientific rigorousness is Callaway trying to demonstrate here? Is it8 v) k' i% W& B Y
logical that if Lochter is the champion, we should assume that he leads in1 g) X9 ]. X- r( w# x9 S
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 V0 S9 A/ [% Y& [" M
implies that a drug test cannot rule out the possibility of doping. Is this5 g- s1 P. d! f/ w; _* ^& E/ c
kind of agnosticism what Nature really wants to teach its readers? By that
" ~3 v1 k. C& \5 Q' @standard, I estimate that at least half of the peer-reviewed scientific1 [* ]( o% V' n( E8 h# ~% e' h
papers in Nature should be retracted. How can one convince the editors and+ q4 L; [* J5 v# @
reviewers that their proposed theory works for every possible case? One
: [ S8 D, x' I* o+ X. |' Z8 S: pcannot. One chooses to apply the theory to typical examples and to
( c! h2 {( Z! ^2 E7 edemonstrate that in (hopefully) all scenarios considered, the theory works
, B# V5 J) Q/ U, K5 b6 bto a degree, and that that should warrant publication until a counterexample" q9 D2 L2 }9 q$ O ? K! m/ z& `
is found. I could imagine that Callaway has a sceptical mind, which is& V+ R8 D; a' w0 g& z3 y; p/ c
crucial to scientific thinking, but that would be put to better use if he
+ y x2 g" h. _/ pwrote a peer-reviewed paper that discussed the odds of Ye doping on a highly
! T% n2 [3 t, V$ @! Q! m0 n' |advanced, non-detectable drug that the Chinese have come up with in the
+ x/ e/ |( W9 I. tpast 4 years (they obviously did not have it in Beijing, otherwise why not
& e$ Y) D n- O5 tuse it and woo the audience at home?), based on data and rational derivation" `6 u: A o% S, F; F Y V+ e
. This article, however, can be interpreted as saying that all athletes are
6 s( r; t0 }! [, Jdoping and the authorities are just not good enough to catch them. That may
: P: }( j2 @2 Q- t$ P: z: ]3 ibe true, logically, but definitely will not make the case if there is ever a
( S; X$ r7 @) d$ E5 ?' a8 |hearing by the governing body for water sports, FINA, to determine if Ye4 U2 ]' A- a! K o
has doped. To ask whether it is possible to obtain a false negative in a8 A, w) ~' ]$ w# ]
drug test looks like a rigged question to me. Of course it is possible:5 Z& H& C* ?8 e2 [5 E3 Z
other than the athlete taking a drug that the test is not designed to detect7 V" U+ D4 @& V, F8 i3 S
, anyone who has taken quantum 101 will tell you that everything is; {2 _( ^0 P! o$ u' P& e
probabilistic in nature, and so there is a probability that the drug in an ~, Q' x' o& Z/ a
athlete’s system could tunnel out right at the moment of the test. A slight% ^% _: o; j& [5 m: ~
chance it may be, but should we disregard all test results because of it?! W- e- D' A) s, K
Let’s be practical and reasonable, and accept that the World Anti-Doping5 x# A9 v( i8 g M* Y0 g
agency (WADA) is competent at its job. Ye’s urine sample will be stored for
8 P7 w+ j: I; K0 r/ f, Y+ Seight years after the contest for future testing as technology advances.1 a0 x" E$ l8 C/ B. ~. c
Innocent until proven guilty, shouldn’t it be?
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X p) Q: N# x4 _# e3 cSixth, and the last point I would like to make, is that the out-of-
) h, e2 g+ c0 ]/ r& xcompetition drug test is already in effect, which Callaway failed to mention
; s6 X; ^4 p2 Z- m' X, a$ |6 T. As noted in the president of WADA’s press release, drug testing for# S1 {( Y3 j" O- q. d; k
Olympians began at least six months before the opening of the London- u# [0 W+ I! h4 V3 N1 u
Olympics. Furthermore, 107 athletes have been banned from this Olympics for1 @- ~& [4 _6 Q! }
doping. That may be the reason that “everyone will pass at the Olympic2 c" t3 {* a$ J2 r4 q
games. Hardly anyone fails in competition testing” — those who did dope+ s' l. c# ]" i
have already been caught and sanctioned. Callaway is free to suggest that a- V, x( B9 v! Z" |, o+ r
player could have doped beforehand and fooled the test at the game, but this
/ ?# J7 I# @$ [. Ypossibility is certainly ruled out for Ye.0 Q) U' c2 b+ }# [8 _6 w9 k! u: ^
1 l& |& V; R- R3 G9 J& ?& p3 ^+ H7 mOver all, even though Callaway did not falsify any data, he did (& J6 W, q& P$ ^# O. Y, D
intentionally or not) cherry-pick data that, in my view, are far too
7 \1 m) N. H$ G- G. Wsuggestive to be fair and unbiased. If you want to cover a story of a, t' p+ c6 j3 x1 u1 d! @. `
suspected doping from a scientific point of view, be impartial and provide
6 m! G2 ]5 j, K" @+ v: {all the facts for the reader to judge. You are entitled to your
2 {; e' V& e' o1 Z1 G/ R- ginterpretation of the facts, and the expression thereof in your piece,8 l/ x. }- `/ ~3 n4 @. u3 [
explicitly or otherwise, but showing only evidence that favours your
$ {& N/ @: `1 S7 U6 s, {/ X% kargument is hardly good science or journalism. Such an article in a journal5 ~ X6 o. r' u# b. Y
such as Nature is not an appropriate example of how scientific research or; X. P6 y$ b0 [% c, N0 h3 X- Q) P' o
reporting should be done. |
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