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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 m/ k* X, c. E& x) @
如果是中国长大的,英语能到这种程度真是很不简单。/ [1 c" ^5 T+ v5 w! i! [
; [ j/ J5 Y( m5 v* Thttp://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html7 D, o2 o- A; F: ?0 x
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FROM LAI JIANG, Department of Chemistry, University of Pennsylvania& B* S- y' C( ]# G1 O
1 u. b3 u4 r* WIt is a shame to see Nature — which nearly all scientists, including myself; H. v1 ^( S: E% z( M
, regard as one of the most prestigious and influential physical-science
6 p: t' W2 N( m$ P: C: [magazines — publish a thinly veiled biased article like this. Granted, this, g# a! e# }7 b7 p
is not a peer-reviewed scientific article and did not go through the
+ }" W+ h# y7 B% mscrutiny of picking referees. But to serve as a channel for the general3 M4 x- u' ~4 u, E, D7 B
populace to be in touch with and appreciate science, the authors and editors+ g4 ^' m% W, _5 S' a8 Q, `
should at least present the readers with facts within the proper context,1 {6 Q- t2 ]# s% }2 p
which they blatantly failed to do.6 L9 P! j5 H4 b2 C5 K& J
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First, to identify Ye’s performance increase, Ewen Callaway compared her
; E3 b3 {! q$ v4 b/ E7 M% `Olympic 400-metre IM time with her performance at the World Championships in5 c$ C3 p9 {' \9 r7 I
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “
+ U, _" V% N! @9 ` Q# L i5 uanomalous” improvement of around 7 seconds (6.72 s). In fact, her previous9 z% _ ~- l" \3 [# H
personal best was 4:33.79 at the Asian Games in 2010. This leads to an4 S0 C: B0 {* |+ |% ]. `
improvement of 5.38 seconds. In a sporting event in which 0.1 s can be the
3 }3 ~& u, ?* ]- @difference between the gold and silver medal, I see no reason for 5.38 s to- G2 k' Z, M$ \7 Q; c( u
be treated as 7 s.6 N1 E2 w4 G; K R
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Second, as previously pointed out, Ye is only 16 years old and her body is
: G6 D: t9 \- o5 o Y! d: C+ qstill developing. Bettering oneself by 5 seconds over two years may seem
/ u9 | J& }( x! _% U) _) \impossible for an adult swimmer, but it certainly happens among youngsters.3 _* x8 {* n% z: M
An interview with Australian gold medallist Ian Thorpe revealed that his 400( ~" ?5 k, y3 l. {3 N
-metre freestyle time improved by 5 seconds between the ages of 15 and 16.
# a$ c1 Q8 c/ G+ S- Q+ }For regular people, including Callaway, it may be hard to imagine what an$ z2 _( v4 I7 n& Q! m# J) W
elite swimmer can achieve as he or she matures and undergoes scientific and6 r) x, L) B4 ]0 y; g* L) f3 Y! K
persistent training. But jumping to the conclusion that it is “anomalous”7 e# t# i) d# f
based on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.$ f# K) c/ ~0 l+ D4 M$ a) Q
$ y. D2 w! L1 l3 e1 i4 Y+ tThird, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook
T( d. j" w- z9 H$ Sexample of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in, X+ `/ t9 a* l' @; T4 ]9 O' [
the last 50 metres, but Lochte had a huge lead in the first 300 metres, so
3 ?! K# h. b& v% y! o* e! Zhe chose not to push himself too hard and to conserve his energy for later* }, L0 ]; y& T, @
events (whether this conforms to the Olympic spirit and the ‘use one’s8 y8 G3 T. d) F
best efforts to win a match’ requirement that the Badminton World
7 N$ A: g9 [. Y5 ^7 \Federation recently invoked to disqualify four badminton pairs is another
) L T; g5 v0 ntopic worth discussing, though probably not in Nature). Ye, on the other
$ ~- e% c: d7 U2 ]2 n% s7 Thand, was trailing behind after the first 300 metres and relied on freestyle
8 i3 {% P* ^3 r4 x, in which she has an edge, to win the race. Failing to mention this7 M& [+ _# e& z. c3 Y U. t& `
strategic difference, as well as the fact that Lochte is 23.25 seconds
; ^7 e" \* H. u, ~3 a2 Cfaster (4:05.18) than Ye overall, creates the illusion that a woman swam0 q1 [- x; o$ O
faster than the best man in the same sport, which sounds impossible. Putting1 g' Y( M3 z" Q. K1 h
aside the gender argument, I believe this is still a leading question that6 B$ ]/ e% `9 ~7 i0 \
implies to the reader that there is something fishy going on.
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2 `" X9 R9 v" Q$ MFourth is another example of cherry-picking. In the same event, there are
# N3 o, E: C1 bfour male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93
) t- P% r' T6 G6 P' ^: js) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s
6 [4 ?& K& P/ d: A), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns: Q, t$ l8 f* d' X4 h
out, if we are just talking about the last 50 metres in a 400-metre IM,1 L# r h: W. w% |4 v9 T, L
Lochter is not the example I would have used if I were the author. What kind
" S6 A+ ?* U5 ~# tof scientific rigorousness is Callaway trying to demonstrate here? Is it
( J$ O0 ?: s- u# r2 T% _; Wlogical that if Lochter is the champion, we should assume that he leads in" _: q( U; E- f/ O; @7 c
every split? That would be a terrible way to teach the public how science
( T2 @) ]4 k0 Lworks.
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Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and- O& Y7 [( a5 }) g3 ^9 ]
implies that a drug test cannot rule out the possibility of doping. Is this! F* ?9 ?, O9 Q1 k! I! O
kind of agnosticism what Nature really wants to teach its readers? By that+ M$ m9 K1 ?) G4 S$ T$ y/ M4 Y. N
standard, I estimate that at least half of the peer-reviewed scientific
3 G. p2 w: k0 W! Y$ Xpapers in Nature should be retracted. How can one convince the editors and" p0 _9 u: G. X. q; j; {) e# T- P8 U
reviewers that their proposed theory works for every possible case? One
5 `; o! t) G2 i2 }$ Y o6 dcannot. One chooses to apply the theory to typical examples and to I# r) O) ^2 ^* p2 g$ r" C/ e* r4 E
demonstrate that in (hopefully) all scenarios considered, the theory works
* f* W! L2 G$ g) B8 Oto a degree, and that that should warrant publication until a counterexample! a. V! W4 L5 R' m- ^
is found. I could imagine that Callaway has a sceptical mind, which is' T. C5 n6 } M+ ^% u5 O
crucial to scientific thinking, but that would be put to better use if he) r* E& R6 P0 Z
wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly
/ J5 \$ z& A5 B' fadvanced, non-detectable drug that the Chinese have come up with in the \* `2 }( F0 T- ^6 b/ l
past 4 years (they obviously did not have it in Beijing, otherwise why not% V. Z$ o* n+ p) l( _
use it and woo the audience at home?), based on data and rational derivation
1 }! z( A: `6 T8 L1 k6 D. This article, however, can be interpreted as saying that all athletes are
+ O0 H& f% G* W7 o5 q: K2 wdoping and the authorities are just not good enough to catch them. That may" G" r9 Q$ p; M! P
be true, logically, but definitely will not make the case if there is ever a, F( H9 G8 N8 f7 c" W6 V
hearing by the governing body for water sports, FINA, to determine if Ye
" B; J( v# Y' n8 |has doped. To ask whether it is possible to obtain a false negative in a
2 Z2 i6 S% k0 l/ fdrug test looks like a rigged question to me. Of course it is possible:
+ b9 i8 V/ F! d+ mother than the athlete taking a drug that the test is not designed to detect
}6 c; A y, |5 L, anyone who has taken quantum 101 will tell you that everything is& W+ f: b; k4 A' D V0 k2 Z
probabilistic in nature, and so there is a probability that the drug in an! q0 y! j3 }& I+ Q" n9 V
athlete’s system could tunnel out right at the moment of the test. A slight) S5 a9 q7 _! E: n! c0 M! c' l" q
chance it may be, but should we disregard all test results because of it?
" }/ [# v }" r* C$ nLet’s be practical and reasonable, and accept that the World Anti-Doping, m1 x# }8 R1 L8 i
agency (WADA) is competent at its job. Ye’s urine sample will be stored for
9 J0 Z1 T8 D0 r6 M5 ] ^eight years after the contest for future testing as technology advances.$ G# z( F" s0 d
Innocent until proven guilty, shouldn’t it be?
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' Z* O$ {( l8 |5 v, OSixth, and the last point I would like to make, is that the out-of-
5 g. N: R, |( p! Lcompetition drug test is already in effect, which Callaway failed to mention. m& _2 x A' e7 u
. As noted in the president of WADA’s press release, drug testing for+ e8 ^( W1 e6 [ H
Olympians began at least six months before the opening of the London8 C+ m& ^- J1 b1 F% k; S
Olympics. Furthermore, 107 athletes have been banned from this Olympics for- a+ O8 n: ~6 O, R6 m, M) X0 g
doping. That may be the reason that “everyone will pass at the Olympic
, ]7 l: U0 A' V4 a$ E, _games. Hardly anyone fails in competition testing” — those who did dope
! y' v* @) F1 o6 |6 E: {have already been caught and sanctioned. Callaway is free to suggest that a
Y3 w9 R* z% J4 @( T8 kplayer could have doped beforehand and fooled the test at the game, but this
% ?5 [* E4 E6 N ]% c- ~possibility is certainly ruled out for Ye.
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$ r0 S0 w! r! i4 w+ k/ F, t4 a$ fOver all, even though Callaway did not falsify any data, he did (' j: ?3 i/ B2 Z3 e3 e3 p
intentionally or not) cherry-pick data that, in my view, are far too# A6 J; T6 r7 H6 ?' |
suggestive to be fair and unbiased. If you want to cover a story of a$ `0 K+ S, h5 F" ?" a
suspected doping from a scientific point of view, be impartial and provide
4 g) M# i& f% F% Hall the facts for the reader to judge. You are entitled to your
4 f: Z7 J! q0 b1 `6 ?" ?interpretation of the facts, and the expression thereof in your piece,* b! ^, u! j0 M0 f
explicitly or otherwise, but showing only evidence that favours your
# p( d$ R( {, A0 Gargument is hardly good science or journalism. Such an article in a journal/ S8 n9 L2 Z* `5 s( K2 D1 F
such as Nature is not an appropriate example of how scientific research or3 l* z F u0 o8 {) _" T
reporting should be done. |
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