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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$ T" Q5 u5 @+ i) h
如果是中国长大的,英语能到这种程度真是很不简单。; \. E, ]6 \% x% H/ f
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http://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html
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1 l* f4 V: D$ x& b6 VFROM LAI JIANG, Department of Chemistry, University of Pennsylvania, e) ~' \( d0 @4 _( u
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It is a shame to see Nature — which nearly all scientists, including myself0 H3 G' y* U; `9 b% l
, regard as one of the most prestigious and influential physical-science* N6 M# k4 P9 u
magazines — publish a thinly veiled biased article like this. Granted, this! x( {7 u6 F# r0 E/ J; \- P
is not a peer-reviewed scientific article and did not go through the0 s7 W, a0 s# l- Y' j' I: A6 n
scrutiny of picking referees. But to serve as a channel for the general6 o3 s; P7 w+ V+ c8 ?
populace to be in touch with and appreciate science, the authors and editors6 B, F# N" J4 Y5 G# Y7 M2 f
should at least present the readers with facts within the proper context,2 j# M, V0 c% x% a
which they blatantly failed to do. p2 D+ q$ a& ^- g7 a$ ^
, U' c! Y0 L0 m, g; O+ F4 v- w6 e: d" u2 JFirst, to identify Ye’s performance increase, Ewen Callaway compared her5 u6 N m" Z Y7 }' x/ c
Olympic 400-metre IM time with her performance at the World Championships in3 `( F. w; v" ~+ m5 H- N% @! G
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “: a) g0 ~- h' W4 K! e9 N* ?+ g
anomalous” improvement of around 7 seconds (6.72 s). In fact, her previous7 }3 t- L$ L9 v/ O$ t3 B
personal best was 4:33.79 at the Asian Games in 2010. This leads to an
, C! Y! L- {* W' S3 L* m/ H& pimprovement of 5.38 seconds. In a sporting event in which 0.1 s can be the! o2 q2 T; M0 Q1 q
difference between the gold and silver medal, I see no reason for 5.38 s to5 L U2 U7 V* y5 n2 J. f) E
be treated as 7 s.* h8 N; o$ }* y; z4 q! g# `2 u4 b. P
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Second, as previously pointed out, Ye is only 16 years old and her body is
) r& E3 S5 ^" hstill developing. Bettering oneself by 5 seconds over two years may seem
3 |0 p& H# @4 y6 m! C2 H* y; Jimpossible for an adult swimmer, but it certainly happens among youngsters.
, X% r) f9 t: ?5 w8 nAn interview with Australian gold medallist Ian Thorpe revealed that his 400" L) ~/ [+ a9 a9 B o: T
-metre freestyle time improved by 5 seconds between the ages of 15 and 16.
, d9 m; s* R$ k. c' Z& W& K. eFor regular people, including Callaway, it may be hard to imagine what an
4 J0 B. u/ m+ zelite swimmer can achieve as he or she matures and undergoes scientific and
- K+ A2 O( X! i5 Cpersistent training. But jumping to the conclusion that it is “anomalous”
4 y7 n' h5 M! w: C1 dbased on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.
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5 V- Z& \1 w7 A$ [" J+ r1 f0 kThird, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook
3 w; z/ ]7 \8 C7 ~example of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in
$ P4 ]6 A: ] _! M& y9 Tthe last 50 metres, but Lochte had a huge lead in the first 300 metres, so
$ J; n$ V p. D, Q2 v( }6 Rhe chose not to push himself too hard and to conserve his energy for later/ Z) a1 U" T) H1 S# i, |5 c% e8 x
events (whether this conforms to the Olympic spirit and the ‘use one’s
8 I1 F) V& B) bbest efforts to win a match’ requirement that the Badminton World2 _7 c( i1 Q1 O4 b( b$ ]6 Y _
Federation recently invoked to disqualify four badminton pairs is another
! I" M$ o% t8 l3 n# atopic worth discussing, though probably not in Nature). Ye, on the other+ B1 M) ]8 u# [( B+ R) g
hand, was trailing behind after the first 300 metres and relied on freestyle
6 g; A) K! \) N. @/ `% p, `, in which she has an edge, to win the race. Failing to mention this# A" n: u0 x. G. Q
strategic difference, as well as the fact that Lochte is 23.25 seconds
0 X) Z( e( x, z; E% Zfaster (4:05.18) than Ye overall, creates the illusion that a woman swam* } M3 D5 e, n+ J7 c9 N: I
faster than the best man in the same sport, which sounds impossible. Putting
D* ]( j4 l5 taside the gender argument, I believe this is still a leading question that9 ?' g. O& g, m' s. v4 ^0 |: l
implies to the reader that there is something fishy going on.
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( u: n4 y1 [* T0 lFourth is another example of cherry-picking. In the same event, there are
3 k. e8 z l" I4 ~8 Z6 r4 }7 U( mfour male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93! Z6 V) e. ^8 A2 B+ M
s) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s
! i- k( f' o Q G r* a), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns
+ D3 Z2 m D7 ~, L: l* Z6 Mout, if we are just talking about the last 50 metres in a 400-metre IM,
9 v+ t& L% i- V0 |) u0 VLochter is not the example I would have used if I were the author. What kind' A5 c7 G' m% q" r4 U
of scientific rigorousness is Callaway trying to demonstrate here? Is it
# b- [3 [4 @9 g" ^0 [logical that if Lochter is the champion, we should assume that he leads in/ Q, A8 E9 ^: p) b9 r4 ?
every split? That would be a terrible way to teach the public how science
0 U# A7 n& ]3 p5 e3 @4 H$ f" Zworks.
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Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and
1 N2 H# x8 I/ {implies that a drug test cannot rule out the possibility of doping. Is this
0 d( v( I* A3 d2 |: dkind of agnosticism what Nature really wants to teach its readers? By that
m/ H: P9 m, b& h: @- N$ Tstandard, I estimate that at least half of the peer-reviewed scientific
' T: x* d9 H1 _ `7 Opapers in Nature should be retracted. How can one convince the editors and. m K8 f: D& ]5 Z6 V
reviewers that their proposed theory works for every possible case? One
9 F; c3 g0 L. w7 i vcannot. One chooses to apply the theory to typical examples and to
) p7 T5 {; z; `; B6 a7 pdemonstrate that in (hopefully) all scenarios considered, the theory works
& u" M: [/ q4 ^* Q! Sto a degree, and that that should warrant publication until a counterexample
; I- P9 k R6 y) o1 nis found. I could imagine that Callaway has a sceptical mind, which is- M! J A2 z& ?" U5 ]% J
crucial to scientific thinking, but that would be put to better use if he* D9 l0 H$ s* {; s0 Q' e
wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly, u" o4 I& C$ f* P
advanced, non-detectable drug that the Chinese have come up with in the) n. \: W7 r2 @7 s4 q4 q9 K/ Z
past 4 years (they obviously did not have it in Beijing, otherwise why not
: s( Z/ A! w" S5 v; d/ ruse it and woo the audience at home?), based on data and rational derivation
, v1 d7 e# q3 f9 y. This article, however, can be interpreted as saying that all athletes are/ K6 b# c5 y1 m+ }
doping and the authorities are just not good enough to catch them. That may
0 I' O5 R U0 h gbe true, logically, but definitely will not make the case if there is ever a
" \' Z! ^* o# T+ D: o/ Ahearing by the governing body for water sports, FINA, to determine if Ye4 R5 c8 o' ~ f$ Y
has doped. To ask whether it is possible to obtain a false negative in a
- ]/ i ~" ~9 e. ?- E9 {drug test looks like a rigged question to me. Of course it is possible:
" e0 L% T9 \4 e) gother than the athlete taking a drug that the test is not designed to detect
! Q& p5 ^ u H6 c4 Q, anyone who has taken quantum 101 will tell you that everything is; Z7 T: f* z! E
probabilistic in nature, and so there is a probability that the drug in an2 E% Q8 B2 l# ]6 p# d& X
athlete’s system could tunnel out right at the moment of the test. A slight0 g! x- A6 D& t
chance it may be, but should we disregard all test results because of it?
6 y! g6 h- t' z" C7 n9 [9 qLet’s be practical and reasonable, and accept that the World Anti-Doping
, e7 C& \* `( g0 K2 g- I, @ y" jagency (WADA) is competent at its job. Ye’s urine sample will be stored for1 F% f7 W! c- D3 x+ A, p. C- m
eight years after the contest for future testing as technology advances.5 k6 u+ I! z; ^* d
Innocent until proven guilty, shouldn’t it be?, ]2 H& O+ y) e
* a; _, a/ Z* A$ m2 X$ \Sixth, and the last point I would like to make, is that the out-of-
- E7 A) H, V% p kcompetition drug test is already in effect, which Callaway failed to mention8 b: c1 I- }. C+ e' H$ d
. As noted in the president of WADA’s press release, drug testing for' }% s1 p ~5 O8 n5 k/ o; T% G
Olympians began at least six months before the opening of the London4 _& j0 i' r: x& H( X! u& P* V8 g4 w
Olympics. Furthermore, 107 athletes have been banned from this Olympics for
9 {9 D6 F. }/ Adoping. That may be the reason that “everyone will pass at the Olympic- f. i$ J, |. ~
games. Hardly anyone fails in competition testing” — those who did dope
8 r5 N- a0 s# a/ A# h; G0 v. ]7 ^have already been caught and sanctioned. Callaway is free to suggest that a7 F0 _2 I1 ?' a/ F% h: b
player could have doped beforehand and fooled the test at the game, but this
* E7 u7 D* V6 i* ]% z; opossibility is certainly ruled out for Ye.$ i4 b) L7 ]" A) H+ Q
/ i1 Q2 ^- j5 M aOver all, even though Callaway did not falsify any data, he did (! g4 ]! K7 Z& P* Z* k# u' H
intentionally or not) cherry-pick data that, in my view, are far too' R \5 D# ]% x+ _- G
suggestive to be fair and unbiased. If you want to cover a story of a8 O1 H, _+ [: ]: }+ J% D
suspected doping from a scientific point of view, be impartial and provide
( o) G- o9 p2 c8 z; I4 R6 y5 Eall the facts for the reader to judge. You are entitled to your, r" |; v) Y1 }$ n, ^4 c' L P) b5 X1 S
interpretation of the facts, and the expression thereof in your piece,* ?8 g; x5 x! ]8 @
explicitly or otherwise, but showing only evidence that favours your
) e2 E, u' o# Z- @' H1 F3 A* L3 targument is hardly good science or journalism. Such an article in a journal* s- @, R6 ?$ ]6 h: S
such as Nature is not an appropriate example of how scientific research or
1 C* L+ z3 v! Kreporting should be done. |
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