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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
3 ^3 I) K$ l) |2 V% c, W: G( ]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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1 d @/ K- v# H1 I6 ]0 lhttp://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html
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! o5 K" c6 }5 J2 ^& _5 P/ b, zFROM LAI JIANG, Department of Chemistry, University of Pennsylvania
( A6 u) j9 E3 @9 |4 u0 o) _( Y, K" p: Y1 P4 T0 P1 G' L' [) j
It is a shame to see Nature — which nearly all scientists, including myself2 o' y5 H8 \' p: y5 \/ O
, regard as one of the most prestigious and influential physical-science
, w9 o) ]5 b! b+ kmagazines — publish a thinly veiled biased article like this. Granted, this S9 `; F N3 W0 Y( z
is not a peer-reviewed scientific article and did not go through the: ^. M) S9 p3 c( b
scrutiny of picking referees. But to serve as a channel for the general1 \. _1 H6 f3 U, B. G
populace to be in touch with and appreciate science, the authors and editors8 B% s4 _) V( t$ [
should at least present the readers with facts within the proper context,
% d/ M$ F7 l4 Z- y6 d: twhich they blatantly failed to do.7 r# ~: m/ p: k/ X% \; y0 T6 Z) r
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First, to identify Ye’s performance increase, Ewen Callaway compared her; @) k0 q0 w, Y }& w, H5 Z a
Olympic 400-metre IM time with her performance at the World Championships in3 e% p9 K; ~1 G5 b1 I) G' w
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “, @* O5 @" S8 L, _/ u
anomalous” improvement of around 7 seconds (6.72 s). In fact, her previous
" Z6 D# X7 B7 [7 z7 Q9 Xpersonal best was 4:33.79 at the Asian Games in 2010. This leads to an
, s8 Q8 ~- H+ c8 z( n+ p+ Kimprovement of 5.38 seconds. In a sporting event in which 0.1 s can be the9 [1 @ u- v* o8 L
difference between the gold and silver medal, I see no reason for 5.38 s to
4 u. ~! ]1 z1 u6 P' t& k; `$ kbe treated as 7 s.
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Second, as previously pointed out, Ye is only 16 years old and her body is
/ L% _3 j1 l# v* Qstill developing. Bettering oneself by 5 seconds over two years may seem
~; H, |# A& @5 R2 S% ?" pimpossible for an adult swimmer, but it certainly happens among youngsters.) B' m2 [0 S' m6 ?1 B! A/ k
An interview with Australian gold medallist Ian Thorpe revealed that his 400" {8 [. z" i/ Y
-metre freestyle time improved by 5 seconds between the ages of 15 and 16.
f# b3 v' o. MFor regular people, including Callaway, it may be hard to imagine what an
+ P0 `( K0 t( C6 w3 `5 X! r! n! R: Oelite swimmer can achieve as he or she matures and undergoes scientific and- }1 U6 c0 h& Y; T+ Y1 k' ~
persistent training. But jumping to the conclusion that it is “anomalous”
, f, P% f9 ]5 }/ f9 R* o' Dbased on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.
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: }; ?; P& }9 P2 @Third, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook
0 W0 X7 B6 q }0 ~) Wexample of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in
4 W6 ~9 |& R# G& zthe last 50 metres, but Lochte had a huge lead in the first 300 metres, so" f6 e" h. w1 i1 p$ B( A
he chose not to push himself too hard and to conserve his energy for later) {0 D% A+ [# p' _
events (whether this conforms to the Olympic spirit and the ‘use one’s
$ R& O r. M/ V6 H! ebest efforts to win a match’ requirement that the Badminton World
0 R+ G' j; M% n- o; a" }) d( eFederation recently invoked to disqualify four badminton pairs is another
$ l' z1 I% N* J4 ztopic worth discussing, though probably not in Nature). Ye, on the other
6 n, o! ^) e" N xhand, was trailing behind after the first 300 metres and relied on freestyle4 [& P% ^; K+ |& y+ N- L6 H
, in which she has an edge, to win the race. Failing to mention this
' k3 v" p+ j$ R: h" [3 l8 Ostrategic difference, as well as the fact that Lochte is 23.25 seconds
' R( f% f- h9 b: Gfaster (4:05.18) than Ye overall, creates the illusion that a woman swam
2 S. J8 a. l, W8 M9 { l0 Bfaster than the best man in the same sport, which sounds impossible. Putting2 ^5 i# I9 Z) C7 c' F7 F u! S1 d
aside the gender argument, I believe this is still a leading question that
, Y; q& I* X6 c1 f5 L& Wimplies 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" {; f/ i3 ^5 n @' c
four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93+ Q/ a% N& P7 @9 d
s) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s
- w/ S' ^. D% m6 t. O3 ~7 r. O), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns% Z7 {+ a w3 ^
out, if we are just talking about the last 50 metres in a 400-metre IM,2 u% o4 B& }$ `
Lochter is not the example I would have used if I were the author. What kind
6 J7 ~3 T" B6 g: ~0 p0 @; @3 } h/ lof scientific rigorousness is Callaway trying to demonstrate here? Is it: e, N7 t4 h% E6 B
logical that if Lochter is the champion, we should assume that he leads in
" Q6 d L& t. C9 H) zevery split? That would be a terrible way to teach the public how science
3 _: m& `- R) n+ X+ m, b3 Lworks.
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$ e' P2 ?0 I% q2 x J& d! fFifth is the issue I oppose the most. Callaway quotes Ross Tucker and
6 y; d3 w* P: q+ X# y/ e- Iimplies that a drug test cannot rule out the possibility of doping. Is this
2 E' D" _. U K! e4 Qkind of agnosticism what Nature really wants to teach its readers? By that( M3 j! [" M* C6 w2 P
standard, I estimate that at least half of the peer-reviewed scientific
: H& f6 T" n. ^3 O% z& y0 D5 q2 fpapers in Nature should be retracted. How can one convince the editors and
z& y3 D3 W8 Q& s4 Breviewers that their proposed theory works for every possible case? One+ G6 z9 |7 D3 ]$ N) x* ]8 j- ~
cannot. One chooses to apply the theory to typical examples and to2 m! s& R; y% w- m% t# m
demonstrate that in (hopefully) all scenarios considered, the theory works
, v& j8 ?& X: o/ Z+ _! M( S* uto a degree, and that that should warrant publication until a counterexample
2 r& M! B' _5 g, }. O ais found. I could imagine that Callaway has a sceptical mind, which is
& o) S; x% a2 Ccrucial to scientific thinking, but that would be put to better use if he
' Q) L0 S7 s% ?, q2 [wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly- I: t" K' Z9 F: ^; ?
advanced, non-detectable drug that the Chinese have come up with in the, I5 b5 N1 S1 D4 U2 W% p) k
past 4 years (they obviously did not have it in Beijing, otherwise why not
' @! I! c! \- A- [use it and woo the audience at home?), based on data and rational derivation& m/ v8 C. t9 M
. This article, however, can be interpreted as saying that all athletes are
+ O0 u$ r0 i/ `7 s8 r' \" Ldoping and the authorities are just not good enough to catch them. That may
: l) A: Y- Z# O- kbe true, logically, but definitely will not make the case if there is ever a
% d# l' L/ J) Z6 Whearing by the governing body for water sports, FINA, to determine if Ye
7 {' f: K$ B! W$ m8 m7 ]- O2 yhas doped. To ask whether it is possible to obtain a false negative in a
, p/ `: _2 w5 C7 g/ o; L4 kdrug test looks like a rigged question to me. Of course it is possible:! o! d+ P: p2 X0 R8 R( j
other than the athlete taking a drug that the test is not designed to detect/ m% |( o! P6 ], u8 U* i
, anyone who has taken quantum 101 will tell you that everything is/ p! N b7 S% a! d* v" `0 \, C
probabilistic in nature, and so there is a probability that the drug in an4 \0 m2 S1 V1 e9 b8 F X" I7 R! V
athlete’s system could tunnel out right at the moment of the test. A slight
0 o: v/ L" b4 E; C Z$ Vchance it may be, but should we disregard all test results because of it?1 L, S' l1 @6 T. H; a
Let’s be practical and reasonable, and accept that the World Anti-Doping
6 R# N) C2 {6 x) h% I) zagency (WADA) is competent at its job. Ye’s urine sample will be stored for
% e7 W3 s/ u. O3 X" teight years after the contest for future testing as technology advances." T1 F( X3 X* w; i
Innocent until proven guilty, shouldn’t it be?
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Sixth, and the last point I would like to make, is that the out-of- w+ I- [, {, C# \! @
competition drug test is already in effect, which Callaway failed to mention3 H6 [+ O( T# a$ o8 b+ f- n% J
. As noted in the president of WADA’s press release, drug testing for7 }4 D [: Y! h3 g3 O
Olympians began at least six months before the opening of the London7 b( w6 y* U- C0 {) h+ i/ W$ F
Olympics. Furthermore, 107 athletes have been banned from this Olympics for
% x8 E7 A& m* Gdoping. That may be the reason that “everyone will pass at the Olympic% q" _ F; S8 a, n$ V, p
games. Hardly anyone fails in competition testing” — those who did dope
9 k! ?) a" M2 W/ E/ Uhave already been caught and sanctioned. Callaway is free to suggest that a3 ` J: l3 {: f0 N
player could have doped beforehand and fooled the test at the game, but this& f, c z5 g H' y* F, W5 J
possibility is certainly ruled out for Ye.
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1 N) ~- ?: E) i+ b0 A9 |+ n8 U+ aOver all, even though Callaway did not falsify any data, he did (
! z, K; q6 m+ F! uintentionally or not) cherry-pick data that, in my view, are far too: r/ S* T5 `! X; }
suggestive to be fair and unbiased. If you want to cover a story of a
* a3 U& y" Q4 l+ Wsuspected doping from a scientific point of view, be impartial and provide, X( t8 t1 t6 b* z: a. ~9 y. i
all the facts for the reader to judge. You are entitled to your
" G$ {* N7 g$ f, V! D% d( n. [; Kinterpretation of the facts, and the expression thereof in your piece,' P5 B' e% j9 _: G5 T" O
explicitly or otherwise, but showing only evidence that favours your
9 Q L; i' i1 Hargument is hardly good science or journalism. Such an article in a journal
8 y5 Q# } s# F% R6 Ysuch as Nature is not an appropriate example of how scientific research or
0 U, Z7 m* Q# H7 N- P Z1 xreporting should be done. |
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