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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
9 n: C# Q& I' D# Z+ B5 N如果是中国长大的,英语能到这种程度真是很不简单。- S; M- v, W4 @( t: M$ d
) `) ]. ]- [0 x0 j2 Zhttp://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html
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FROM LAI JIANG, Department of Chemistry, University of Pennsylvania) j2 [: @/ Q- ^- o; `$ N" o# e
: M7 \( h6 ^. F9 e8 tIt is a shame to see Nature — which nearly all scientists, including myself
* P7 t6 l/ @7 @2 a: F3 q+ d" m, regard as one of the most prestigious and influential physical-science
/ @5 Y, B- O+ r6 A8 l% i/ dmagazines — publish a thinly veiled biased article like this. Granted, this
& O& y" i6 e4 A2 T/ ]is not a peer-reviewed scientific article and did not go through the8 z& c. q5 K# G% L( S0 l; o% O4 d
scrutiny of picking referees. But to serve as a channel for the general9 M; J) h, b6 g* a8 R& k2 \
populace to be in touch with and appreciate science, the authors and editors0 G! x$ |. M9 E3 B* x% ]- b
should at least present the readers with facts within the proper context," q( V9 S2 H6 k5 {6 q' q2 }5 Y
which they blatantly failed to do.6 A$ U3 F+ K# m3 r1 n( f5 Z
: m) ^& X, H# g; m6 OFirst, to identify Ye’s performance increase, Ewen Callaway compared her& v8 D( g7 b$ @2 C
Olympic 400-metre IM time with her performance at the World Championships in" ?8 K) N' B$ B. i1 R( T
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “
5 O6 K2 L0 ^. ^4 ^1 ?0 Canomalous” improvement of around 7 seconds (6.72 s). In fact, her previous
7 q- C: l `6 U4 D& ]4 y3 Qpersonal best was 4:33.79 at the Asian Games in 2010. This leads to an
# |! o2 H2 A4 Z- h3 e4 [6 Dimprovement of 5.38 seconds. In a sporting event in which 0.1 s can be the4 n4 q% w) K+ ^1 Z; y f: E* L
difference between the gold and silver medal, I see no reason for 5.38 s to
+ o: {; |# [, O8 V; A3 ?) n' ~be treated as 7 s.) R- Z+ f/ F- L4 B
9 v5 ^; H9 x6 m$ CSecond, as previously pointed out, Ye is only 16 years old and her body is
) s1 T) a3 `) v* s. V/ }1 d9 M# L+ m% pstill developing. Bettering oneself by 5 seconds over two years may seem
) Z N2 R9 C* p2 X" T6 ximpossible for an adult swimmer, but it certainly happens among youngsters.
& w7 b( |7 [; H# P# ]8 \, SAn interview with Australian gold medallist Ian Thorpe revealed that his 4000 h0 ~4 ]7 W- T- q4 R) T
-metre freestyle time improved by 5 seconds between the ages of 15 and 16./ H! |. N% ?+ N. ]) y. T
For regular people, including Callaway, it may be hard to imagine what an
. X0 U: u4 N7 @$ Pelite swimmer can achieve as he or she matures and undergoes scientific and- H$ Y3 N' x0 a* C- ~/ O
persistent training. But jumping to the conclusion that it is “anomalous”
0 T' L" z0 a$ {based on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.' g7 Z: K. [) h
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Third, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook0 d! s1 x5 k5 g+ a4 d/ z; o
example of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in# m0 P6 X& `7 q, k! T
the last 50 metres, but Lochte had a huge lead in the first 300 metres, so" q) Z( w. j1 k; Q+ @9 G( O
he chose not to push himself too hard and to conserve his energy for later; u& Z @3 Y% V- d
events (whether this conforms to the Olympic spirit and the ‘use one’s
6 J. ^# X* }, z. r4 p0 u. qbest efforts to win a match’ requirement that the Badminton World
+ k* p$ h, [, `! \' f! D0 s% hFederation recently invoked to disqualify four badminton pairs is another
; o+ E$ z& t% B6 L/ M! ]' u- Ptopic worth discussing, though probably not in Nature). Ye, on the other
& w6 \& J$ A0 J% ]6 U( ?hand, was trailing behind after the first 300 metres and relied on freestyle$ u; v# ~# V9 O8 K4 P* v; Q
, in which she has an edge, to win the race. Failing to mention this1 Y4 P7 J! y6 V& z I( ^
strategic difference, as well as the fact that Lochte is 23.25 seconds4 z4 g. v, i1 T. t& _# Z
faster (4:05.18) than Ye overall, creates the illusion that a woman swam0 X4 J, ]- h. G1 x
faster than the best man in the same sport, which sounds impossible. Putting9 x+ h5 r* z# }0 Z* F! A( f& \7 \
aside the gender argument, I believe this is still a leading question that
* t1 `& Z: ]( X. e1 Himplies to the reader that there is something fishy going on.+ |: s% i' l' T" h
9 ?* T E8 D' i! AFourth is another example of cherry-picking. In the same event, there are8 ?5 G) Q" u. y6 J& @$ L
four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.937 \) L* R% n! e- a$ |% o
s) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s
0 s) m0 y+ N/ ?# R$ z$ [1 @3 ~), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns' y1 V, R' k4 S, h" ?
out, if we are just talking about the last 50 metres in a 400-metre IM,
/ G9 f& B# u+ B& V, f, P, @( L" zLochter is not the example I would have used if I were the author. What kind7 E$ T8 Z: I7 f. k, H8 |$ r
of scientific rigorousness is Callaway trying to demonstrate here? Is it( J5 \& C; w& n. h$ G
logical that if Lochter is the champion, we should assume that he leads in
8 P' A1 I, n5 H' zevery split? That would be a terrible way to teach the public how science
$ b# A. H# \( P+ P; |1 rworks.+ j& x7 N2 r8 N# Z/ V. n
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Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and
8 U" A3 y+ _' qimplies that a drug test cannot rule out the possibility of doping. Is this
1 I- b+ Z" J8 h1 {kind of agnosticism what Nature really wants to teach its readers? By that
# [ t; {; S( V( A# f4 _* ^- mstandard, I estimate that at least half of the peer-reviewed scientific: F4 U' L( q! \5 c
papers in Nature should be retracted. How can one convince the editors and; E7 u7 K; Q- C c$ ?4 u( e
reviewers that their proposed theory works for every possible case? One; v! m, [/ e; e" ]6 V' x
cannot. One chooses to apply the theory to typical examples and to
+ j6 Z7 n( i8 w3 Hdemonstrate that in (hopefully) all scenarios considered, the theory works& a. n2 l+ h% n
to a degree, and that that should warrant publication until a counterexample
6 ]! z: C0 c% p0 _ G, {0 gis found. I could imagine that Callaway has a sceptical mind, which is; M1 i8 E4 u7 D' Z$ ~
crucial to scientific thinking, but that would be put to better use if he
4 C! `6 h% y, p6 v8 pwrote a peer-reviewed paper that discussed the odds of Ye doping on a highly3 q$ s- I) S0 _; S4 a% {
advanced, non-detectable drug that the Chinese have come up with in the" e* Y+ a) z7 ~0 M% A: N) u
past 4 years (they obviously did not have it in Beijing, otherwise why not/ {2 l/ X/ e, u* I
use it and woo the audience at home?), based on data and rational derivation
7 g8 r2 r; a3 C6 i' Y/ d* K$ {7 [& O# l _. This article, however, can be interpreted as saying that all athletes are/ M, W# b5 B; s1 k" M
doping and the authorities are just not good enough to catch them. That may
- c9 ^) R+ E4 G. xbe true, logically, but definitely will not make the case if there is ever a
/ l0 U2 @+ d1 u/ ~4 Khearing by the governing body for water sports, FINA, to determine if Ye" m' Y0 S! E7 y1 c( i4 t
has doped. To ask whether it is possible to obtain a false negative in a
8 ]9 W3 E2 J0 L! x; Vdrug test looks like a rigged question to me. Of course it is possible:
9 B! A, \7 j. k0 |$ Lother than the athlete taking a drug that the test is not designed to detect! d! s; C J* x% y* q' x ~
, anyone who has taken quantum 101 will tell you that everything is
, J, }1 X, p- P5 B7 z( dprobabilistic in nature, and so there is a probability that the drug in an
4 l3 X0 J' ^# Z/ m$ }7 Mathlete’s system could tunnel out right at the moment of the test. A slight
( c0 V' D+ W1 q% z$ W' b H6 R" Tchance it may be, but should we disregard all test results because of it?
0 _' h- W3 \4 Q9 m2 S3 jLet’s be practical and reasonable, and accept that the World Anti-Doping
" r" h$ a7 J0 R- k( ]# uagency (WADA) is competent at its job. Ye’s urine sample will be stored for
* m6 O6 O' V( X0 [5 oeight years after the contest for future testing as technology advances.
/ ?4 P$ S+ a& x! EInnocent until proven guilty, shouldn’t it be?
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" R0 ~7 _# y( l8 H; oSixth, and the last point I would like to make, is that the out-of-+ d8 `- I* ]; D6 W! ^
competition drug test is already in effect, which Callaway failed to mention
F2 M& {1 Z f' ~7 k, y* E. As noted in the president of WADA’s press release, drug testing for9 A0 b; ^9 [+ O3 T) p+ g
Olympians began at least six months before the opening of the London
: L1 m1 e' l8 B$ d# c& a, R$ lOlympics. Furthermore, 107 athletes have been banned from this Olympics for
9 U+ ^2 c1 {+ y* f6 \9 n4 Bdoping. That may be the reason that “everyone will pass at the Olympic5 U2 J' S1 }- E; V- s5 I \4 J: I
games. Hardly anyone fails in competition testing” — those who did dope
" ?/ Y6 B& R7 H2 @have already been caught and sanctioned. Callaway is free to suggest that a/ ~) l9 f( Z# D! w
player could have doped beforehand and fooled the test at the game, but this
# ?- A9 `, X: u+ t$ R% Ipossibility is certainly ruled out for Ye.
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3 b& v2 r3 M/ ?0 F! B* J9 r yOver all, even though Callaway did not falsify any data, he did (
- y4 t/ m* I T/ Z- zintentionally or not) cherry-pick data that, in my view, are far too& e3 s. O C w% f: I
suggestive to be fair and unbiased. If you want to cover a story of a
" C+ ]: I/ K7 tsuspected doping from a scientific point of view, be impartial and provide
/ z( l1 B7 @6 qall the facts for the reader to judge. You are entitled to your/ O' i* C, m$ ~) R# b% x
interpretation of the facts, and the expression thereof in your piece,
. t* z9 a3 r' T K$ Zexplicitly or otherwise, but showing only evidence that favours your8 d4 Y+ h# J5 S1 q" q
argument is hardly good science or journalism. Such an article in a journal: y: p6 i- C2 y' |8 L. R' a
such as Nature is not an appropriate example of how scientific research or
; W! z* v+ r# H- yreporting should be done. |
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