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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 JIANG9 L$ n( Z) Y- `$ g: k% o" [
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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$ a& T# N" m) w8 z5 [1 V+ F$ k) Bhttp://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html- V" h# s1 ^ l
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FROM LAI JIANG, Department of Chemistry, University of Pennsylvania2 c0 ]0 ^) Q* b' B9 P2 ^
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It is a shame to see Nature — which nearly all scientists, including myself/ h5 K( D/ d* v, q; L1 I* r
, regard as one of the most prestigious and influential physical-science. [8 Q9 S* D* k; i
magazines — publish a thinly veiled biased article like this. Granted, this
7 J( z* r3 z* V) m6 b4 _is not a peer-reviewed scientific article and did not go through the l; Z* _! a4 J, w& N: F, ]0 T/ v
scrutiny of picking referees. But to serve as a channel for the general7 F" n3 C1 L7 j6 l: y4 N
populace to be in touch with and appreciate science, the authors and editors8 V& |8 b+ W! c% Q4 `' Z; h
should at least present the readers with facts within the proper context,: g. x- [1 [, I: M8 w& j, T
which they blatantly failed to do.
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First, to identify Ye’s performance increase, Ewen Callaway compared her
2 j7 S$ V* o1 N& [0 a: W% HOlympic 400-metre IM time with her performance at the World Championships in3 q' f; S2 D8 x- t
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “+ M @" a6 N- C% P1 Z; w) C
anomalous” improvement of around 7 seconds (6.72 s). In fact, her previous) n0 h# u% Z7 {* S- p
personal best was 4:33.79 at the Asian Games in 2010. This leads to an- M8 S5 _4 [, _! G/ ?# S4 z4 i
improvement of 5.38 seconds. In a sporting event in which 0.1 s can be the
+ ^& X& I) j& Z6 `difference between the gold and silver medal, I see no reason for 5.38 s to6 q$ O/ z8 l! e3 W3 U# H
be treated as 7 s.
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Second, as previously pointed out, Ye is only 16 years old and her body is
7 `& t, C: `1 c ]( Lstill developing. Bettering oneself by 5 seconds over two years may seem4 C' v3 B4 g6 s2 }, z* w
impossible for an adult swimmer, but it certainly happens among youngsters.% c# c L/ a: M1 z( M9 r& N7 ~
An interview with Australian gold medallist Ian Thorpe revealed that his 400
% N$ R9 d" z+ {9 L' c2 w-metre freestyle time improved by 5 seconds between the ages of 15 and 16.
5 x2 N d* w |For regular people, including Callaway, it may be hard to imagine what an+ n- F2 [. k, N4 h# m
elite swimmer can achieve as he or she matures and undergoes scientific and
* b) y3 m+ D! ^7 cpersistent training. But jumping to the conclusion that it is “anomalous”
9 v1 B( k/ J0 J$ i8 @- V- Mbased on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.0 e8 q3 ?- `5 K% T7 D5 S# M5 }
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Third, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook- @& j2 q6 `" S: L
example of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in6 Q9 Z* e. f3 |8 _* `
the last 50 metres, but Lochte had a huge lead in the first 300 metres, so) H3 a) y# Z3 b0 [/ D9 c! T
he chose not to push himself too hard and to conserve his energy for later
' U+ F& P3 N" O. tevents (whether this conforms to the Olympic spirit and the ‘use one’s2 T" h) N6 e+ C+ x
best efforts to win a match’ requirement that the Badminton World
. I# Z4 | u# {. nFederation recently invoked to disqualify four badminton pairs is another
$ p) I; S- i Y# S4 b& Y7 |3 u# _topic worth discussing, though probably not in Nature). Ye, on the other0 E5 b- z# @& G. y& ?3 q" s
hand, was trailing behind after the first 300 metres and relied on freestyle
7 `8 Z: Z- S/ v: g4 T' L! g3 B9 ]& M, in which she has an edge, to win the race. Failing to mention this
( J; ]# Y$ k, f* v! ^, Istrategic difference, as well as the fact that Lochte is 23.25 seconds
^0 r7 l% Q" D% ], Ifaster (4:05.18) than Ye overall, creates the illusion that a woman swam
/ U; j; o' ~0 K# X: P5 j& n! Tfaster than the best man in the same sport, which sounds impossible. Putting' `+ l! k* M% o+ P# U: E
aside the gender argument, I believe this is still a leading question that+ A5 w- I3 f4 Z2 R4 w9 c. K
implies to the reader that there is something fishy going on.; a7 t1 n8 E) c
* A) t7 I, H" [7 I) `Fourth is another example of cherry-picking. In the same event, there are
' Y( ^ r( `' T& [' ifour male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93! F; N+ j& o3 P) C$ z
s) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s
+ t0 d) c8 N( W& r& H), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns, T) {. n- A+ l- c
out, if we are just talking about the last 50 metres in a 400-metre IM,
. Q! ~; }( ^; Y7 D! X0 E6 |Lochter is not the example I would have used if I were the author. What kind
' s; T# @! b' y wof scientific rigorousness is Callaway trying to demonstrate here? Is it/ a, @2 \& r: h3 m/ m- t
logical that if Lochter is the champion, we should assume that he leads in
- B/ K3 [3 ?6 ~$ k; Severy split? That would be a terrible way to teach the public how science1 o$ d6 {2 y( T9 D0 B4 ^$ }6 X. l% g
works.
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Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and
% J; F; |+ E) h0 Limplies that a drug test cannot rule out the possibility of doping. Is this |6 R) j6 p1 ~: |+ w* \
kind of agnosticism what Nature really wants to teach its readers? By that
8 D# h% t$ k& I( t2 istandard, I estimate that at least half of the peer-reviewed scientific
# N+ L7 P" a9 @9 Npapers in Nature should be retracted. How can one convince the editors and
! @3 s" \$ n) z" X) h$ u9 J- `reviewers that their proposed theory works for every possible case? One
% z. j$ q: [% N/ {+ S* H9 F ]cannot. One chooses to apply the theory to typical examples and to
3 M( g: P/ r2 sdemonstrate that in (hopefully) all scenarios considered, the theory works% k {( F! g& v
to a degree, and that that should warrant publication until a counterexample
& H: x7 R5 s$ I* V9 Y0 |is found. I could imagine that Callaway has a sceptical mind, which is
# n0 c+ j4 x: W& J9 i" y8 Kcrucial to scientific thinking, but that would be put to better use if he. b4 E9 u8 W- \
wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly9 o- Z' @2 z' V! p9 L+ }) s" w+ J6 t
advanced, non-detectable drug that the Chinese have come up with in the$ T) V* Z! \: T6 X$ c
past 4 years (they obviously did not have it in Beijing, otherwise why not3 l% `! M" x/ b) K' K
use it and woo the audience at home?), based on data and rational derivation
8 Z. E. r% }8 |* a3 d. This article, however, can be interpreted as saying that all athletes are
8 t+ b4 Q# T: f, q, ]5 ~doping and the authorities are just not good enough to catch them. That may
! A( ^4 ]9 P' rbe true, logically, but definitely will not make the case if there is ever a
8 \! e# W4 \9 Fhearing by the governing body for water sports, FINA, to determine if Ye
1 t6 Q: D+ M/ K1 X. g" yhas doped. To ask whether it is possible to obtain a false negative in a
' A6 ^ N. u# odrug test looks like a rigged question to me. Of course it is possible:/ A& t! M; X- V; }2 h- L
other than the athlete taking a drug that the test is not designed to detect- f! l* }) t5 i0 o2 |2 X9 M0 X9 h3 S
, anyone who has taken quantum 101 will tell you that everything is
! l5 W* H! y8 G$ [* _0 Jprobabilistic in nature, and so there is a probability that the drug in an. H! C: @& L: o# |' d
athlete’s system could tunnel out right at the moment of the test. A slight: v- R6 _ Q( d# ^& F5 D+ y& Y
chance it may be, but should we disregard all test results because of it?" r% K, p7 p# Q
Let’s be practical and reasonable, and accept that the World Anti-Doping, o# E$ i$ ^) \/ c( \
agency (WADA) is competent at its job. Ye’s urine sample will be stored for: C& T! s. y# H/ h( z8 x1 G" j
eight years after the contest for future testing as technology advances.
2 z/ @; R- U, E1 u& _ oInnocent until proven guilty, shouldn’t it be?2 j+ H \/ e+ u5 j
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Sixth, and the last point I would like to make, is that the out-of-9 u0 W3 @: t: \/ @
competition drug test is already in effect, which Callaway failed to mention8 [7 J) T a, T; C x
. As noted in the president of WADA’s press release, drug testing for+ d# B: T- r+ b; A
Olympians began at least six months before the opening of the London! [' z; T8 ~ \: s6 M5 A
Olympics. Furthermore, 107 athletes have been banned from this Olympics for
# B( ?4 d" l6 R$ `4 G! E bdoping. That may be the reason that “everyone will pass at the Olympic/ G; }- s3 r- ^: z# G& O5 B
games. Hardly anyone fails in competition testing” — those who did dope
* L9 o. C* w: jhave already been caught and sanctioned. Callaway is free to suggest that a
* `, U9 z. F: V) n! s3 nplayer could have doped beforehand and fooled the test at the game, but this( t& [" F# X# }4 \" u
possibility is certainly ruled out for Ye.
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Over all, even though Callaway did not falsify any data, he did (
6 H+ M6 C' [0 Y! d4 zintentionally or not) cherry-pick data that, in my view, are far too8 W" x* }+ j s0 C
suggestive to be fair and unbiased. If you want to cover a story of a
' v5 s( D- D( }2 L+ D' F& isuspected doping from a scientific point of view, be impartial and provide
3 p9 \$ z# U: s( B; Y6 q% M! V. Z4 l- @all the facts for the reader to judge. You are entitled to your
4 V4 v" F& m n+ `- \+ W: Yinterpretation of the facts, and the expression thereof in your piece,' v7 X o d3 ], n. d) p
explicitly or otherwise, but showing only evidence that favours your
! Y3 W# ~/ N8 C7 ?5 z% C6 ~7 h- e4 Largument is hardly good science or journalism. Such an article in a journal
3 W" i5 y! l- Lsuch as Nature is not an appropriate example of how scientific research or4 h. ]$ G$ ~# q" g0 e3 z$ S* V
reporting should be done. |
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