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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
8 w5 f8 X$ w1 j' N6 g/ q4 h如果是中国长大的,英语能到这种程度真是很不简单。; g2 `0 w; p: R
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http://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html h% z, s( D P1 c0 A
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FROM LAI JIANG, Department of Chemistry, University of Pennsylvania
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It is a shame to see Nature — which nearly all scientists, including myself
: t/ K2 B) R3 Z' w* h" N; l$ _, regard as one of the most prestigious and influential physical-science
/ C6 P7 @) p, L: {4 \0 ~magazines — publish a thinly veiled biased article like this. Granted, this
! J( P M' n* ~* r/ p1 {4 |, ^is not a peer-reviewed scientific article and did not go through the
% o6 ]+ ~, j2 z5 H8 Dscrutiny of picking referees. But to serve as a channel for the general3 o+ O& L1 q6 R- k# E, A
populace to be in touch with and appreciate science, the authors and editors- o- p( Z& b; o3 U- ?
should at least present the readers with facts within the proper context,
- C& v+ l% e. C! K2 Dwhich they blatantly failed to do.5 I: Z$ n* p" Q# g, m
, R/ f& g* W% nFirst, to identify Ye’s performance increase, Ewen Callaway compared her3 J' c% b P7 y% _1 n1 v# W
Olympic 400-metre IM time with her performance at the World Championships in2 U' w. ~' q1 H- n; C* Z% _5 ~
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “$ m4 h+ T+ _8 Z4 p4 m! G
anomalous” improvement of around 7 seconds (6.72 s). In fact, her previous9 q6 w' L q( s* \- n
personal best was 4:33.79 at the Asian Games in 2010. This leads to an
3 w1 G! ?3 Q- I: Z# \6 s8 ]improvement of 5.38 seconds. In a sporting event in which 0.1 s can be the& g! ^: N3 J1 r9 T
difference between the gold and silver medal, I see no reason for 5.38 s to
' G( C p x5 L2 a0 j# tbe treated as 7 s.- N/ c& }; W+ Q1 j5 P
. K- f. r, I1 _3 LSecond, as previously pointed out, Ye is only 16 years old and her body is- D, r) {& i8 ~+ G4 x" Q, P1 H
still developing. Bettering oneself by 5 seconds over two years may seem
" ~! q( }5 e" K* d4 G/ ~impossible for an adult swimmer, but it certainly happens among youngsters.
6 J7 T0 o, i% Z) ^$ ]# @An interview with Australian gold medallist Ian Thorpe revealed that his 400; L5 I5 L# N$ X* K) g
-metre freestyle time improved by 5 seconds between the ages of 15 and 16.' g+ _5 H2 P1 Y, u* v8 O, m, c7 i+ c
For regular people, including Callaway, it may be hard to imagine what an) Z6 V Z: R& p# n* a2 s9 N
elite swimmer can achieve as he or she matures and undergoes scientific and' }& |: X. d4 D7 k* v Y: H
persistent training. But jumping to the conclusion that it is “anomalous”
2 h7 n* k4 n9 e0 ^+ u* f- ]% Xbased on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.- a* _# R) B& e4 z& u
$ ^7 B/ y$ Z8 M7 H5 J3 m
Third, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook
1 `4 e0 b6 ~8 G+ c8 n- a+ pexample of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in
, Y0 C, D4 B: z8 R5 I* [0 zthe last 50 metres, but Lochte had a huge lead in the first 300 metres, so$ Y# @4 r2 G, m% K* J
he chose not to push himself too hard and to conserve his energy for later# o) R, r5 t' h) g& _
events (whether this conforms to the Olympic spirit and the ‘use one’s0 N m, z( f E) C$ S8 V" B2 |
best efforts to win a match’ requirement that the Badminton World, j8 Z6 n& R z! Q" }
Federation recently invoked to disqualify four badminton pairs is another5 Z0 x6 D4 J8 x4 j$ [" g
topic worth discussing, though probably not in Nature). Ye, on the other3 `& E* i4 b- H2 q, u+ |" u
hand, was trailing behind after the first 300 metres and relied on freestyle% H! J7 z) d" { H: k3 X
, in which she has an edge, to win the race. Failing to mention this1 h, z! j1 r1 x- t5 f4 e" I2 K, x
strategic difference, as well as the fact that Lochte is 23.25 seconds8 l. ^- D6 C. s
faster (4:05.18) than Ye overall, creates the illusion that a woman swam5 i* ~5 t" k A) B* y
faster than the best man in the same sport, which sounds impossible. Putting
) G/ c1 f6 J8 F, waside the gender argument, I believe this is still a leading question that( M; D! \% l. x
implies to the reader that there is something fishy going on.
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Fourth is another example of cherry-picking. In the same event, there are
g( @: A+ r3 ^1 R( U5 _; U. Xfour male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.933 S9 M, j8 p$ a: c# P
s) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s
/ K% m& g; u" o), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns
4 B3 G r# B" h! r+ R5 W6 K" Nout, if we are just talking about the last 50 metres in a 400-metre IM,
/ Z" C8 ~& J8 ULochter is not the example I would have used if I were the author. What kind
- E3 S4 R& v8 | A$ {- D5 d% }of scientific rigorousness is Callaway trying to demonstrate here? Is it
$ d! n% S! ~: Z1 V5 ological that if Lochter is the champion, we should assume that he leads in
! g- n' g" h- Y+ N$ Zevery split? That would be a terrible way to teach the public how science7 m0 d- {; U$ ?& r2 v" e
works.
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9 d, Q% p* [+ t A5 F% V* xFifth is the issue I oppose the most. Callaway quotes Ross Tucker and7 U" h7 d- q* c, n# V
implies that a drug test cannot rule out the possibility of doping. Is this
! d2 M) Y/ U8 O7 Pkind of agnosticism what Nature really wants to teach its readers? By that+ i: ]2 v( ^1 M) H, T0 ?
standard, I estimate that at least half of the peer-reviewed scientific
" l9 [$ c2 Q E+ Z% \8 Lpapers in Nature should be retracted. How can one convince the editors and
- e- e! e! ]) a0 f* xreviewers that their proposed theory works for every possible case? One
6 V- |) c' D+ S* Lcannot. One chooses to apply the theory to typical examples and to. ~, c! @2 Y7 R- S7 I- F( R3 n9 h4 ~
demonstrate that in (hopefully) all scenarios considered, the theory works
0 N, }' B1 X0 e! I h7 mto a degree, and that that should warrant publication until a counterexample, h5 F$ P5 Z) B+ n7 W
is found. I could imagine that Callaway has a sceptical mind, which is
0 H( U8 n( A* Y2 w% q6 T( scrucial to scientific thinking, but that would be put to better use if he+ K1 ?1 m, R$ X2 t3 f
wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly
/ m; T$ w, X. N' R* T: t4 ]advanced, non-detectable drug that the Chinese have come up with in the# H' @6 U9 A+ q# n* f: \5 Y
past 4 years (they obviously did not have it in Beijing, otherwise why not
( t5 g+ E( O6 E( q9 buse it and woo the audience at home?), based on data and rational derivation; } k* L @( I. P, n' C; Y$ }1 ~6 R0 c
. This article, however, can be interpreted as saying that all athletes are' t. p6 k( H/ s k' ^1 h- r& k4 Y
doping and the authorities are just not good enough to catch them. That may9 k# t' t9 D: s5 m
be true, logically, but definitely will not make the case if there is ever a8 h7 x% K& C# a* E' y
hearing by the governing body for water sports, FINA, to determine if Ye
- f4 M. O. s" n: r) m ^/ Qhas doped. To ask whether it is possible to obtain a false negative in a# r0 H3 N% W- G: J0 B& W6 U7 S9 {' b
drug test looks like a rigged question to me. Of course it is possible:
, w, f7 \' [4 d+ Y9 T% F: E( kother than the athlete taking a drug that the test is not designed to detect) ^. @' E. Y6 |* p5 }/ b$ d0 [; ]
, anyone who has taken quantum 101 will tell you that everything is' k8 M4 C" j5 Z6 b6 Z4 W% y
probabilistic in nature, and so there is a probability that the drug in an7 G* I" n% W, l5 Z7 [/ B
athlete’s system could tunnel out right at the moment of the test. A slight
6 e3 c- @$ F9 V& [: F( R! nchance it may be, but should we disregard all test results because of it?
! K1 G! P! D3 }Let’s be practical and reasonable, and accept that the World Anti-Doping
) T( P0 M+ U$ m6 cagency (WADA) is competent at its job. Ye’s urine sample will be stored for) J" p1 `: y9 h8 q$ ]6 U& v9 D. V
eight years after the contest for future testing as technology advances.
- H- C% O+ s/ w1 Z3 M0 IInnocent until proven guilty, shouldn’t it be?
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+ u. a9 ?9 g. r4 r9 FSixth, and the last point I would like to make, is that the out-of-
8 _( s* d" c& |$ w" C& Vcompetition drug test is already in effect, which Callaway failed to mention
5 \ R( H; s& `/ b. As noted in the president of WADA’s press release, drug testing for
8 G+ P) B! q! _+ Q0 \Olympians began at least six months before the opening of the London
0 n, K! `0 } {! s u/ mOlympics. Furthermore, 107 athletes have been banned from this Olympics for
" ?, I& y# S3 ?doping. That may be the reason that “everyone will pass at the Olympic
+ v) z) g3 G& k4 W8 u' u$ k' dgames. Hardly anyone fails in competition testing” — those who did dope
) F/ i3 Y! K8 q Q% }/ ~7 |& j8 Whave already been caught and sanctioned. Callaway is free to suggest that a. p9 V# W: N, Q/ y4 O& i
player could have doped beforehand and fooled the test at the game, but this; l) o: D5 P# H4 Z9 U
possibility is certainly ruled out for Ye.& ?% {5 E; b( O7 v2 ^' s
/ V4 \! B& }7 f# M$ r# nOver all, even though Callaway did not falsify any data, he did (7 S) p3 J6 q, P' S" Y1 N
intentionally or not) cherry-pick data that, in my view, are far too
+ s7 s, ~5 e* ~* H0 P' m; h% wsuggestive to be fair and unbiased. If you want to cover a story of a4 ], J2 a' D f% m& s
suspected doping from a scientific point of view, be impartial and provide
, ]* h- F. W: xall the facts for the reader to judge. You are entitled to your
5 q4 o1 l6 R; G! ^( Zinterpretation of the facts, and the expression thereof in your piece,. H; b- N4 J5 Q
explicitly or otherwise, but showing only evidence that favours your; \. x3 V8 _! J' X2 t) D& [+ o' e
argument is hardly good science or journalism. Such an article in a journal, t$ @+ G8 e0 T" h8 V' v
such as Nature is not an appropriate example of how scientific research or3 Z4 F( h0 i% ~. U! C( }5 O
reporting should be done. |
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