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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+ O- T9 i6 H/ m" v: n: m+ E
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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http://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html
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# A% M6 M. j7 D6 p, hFROM LAI JIANG, Department of Chemistry, University of Pennsylvania
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& ]# U7 F) s! V3 |1 n7 n9 MIt is a shame to see Nature — which nearly all scientists, including myself
( j0 l+ U' m ~8 ^, regard as one of the most prestigious and influential physical-science' ]9 b& z2 r4 w' r( d5 y. n! X
magazines — publish a thinly veiled biased article like this. Granted, this
( ~" j J5 e; s% ois not a peer-reviewed scientific article and did not go through the
# B2 B3 l, q, p$ q9 d' _scrutiny of picking referees. But to serve as a channel for the general
7 \& T2 @4 ]0 O) M, wpopulace to be in touch with and appreciate science, the authors and editors
7 I2 d( f- @, g \should at least present the readers with facts within the proper context,1 n c" K/ z0 v) D7 [* H
which they blatantly failed to do.6 \1 u& L6 O1 ]' u! _# _
# A. T' @- F2 y* o/ rFirst, to identify Ye’s performance increase, Ewen Callaway compared her* T* Z: I# D# N% _) T
Olympic 400-metre IM time with her performance at the World Championships in
" d' b1 S% W8 Z6 Q4 n* x2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “% Q% O; \$ v/ H" V+ V6 C: E
anomalous” improvement of around 7 seconds (6.72 s). In fact, her previous9 p5 {: w6 {8 Y8 h
personal best was 4:33.79 at the Asian Games in 2010. This leads to an
8 t3 W6 Y$ P2 N( h4 p/ F' m& }) Fimprovement of 5.38 seconds. In a sporting event in which 0.1 s can be the
8 u) L7 Q3 j7 }' x% hdifference between the gold and silver medal, I see no reason for 5.38 s to0 }& `4 n3 `) I3 ?% }7 @
be treated as 7 s./ L% m' u% m8 C: [) l! e& r
) H4 _# |1 v$ `0 n+ M- V0 CSecond, as previously pointed out, Ye is only 16 years old and her body is* D. v- [4 p3 U" j
still developing. Bettering oneself by 5 seconds over two years may seem
2 R0 d3 }, ~ t! F' ~impossible for an adult swimmer, but it certainly happens among youngsters.
! J3 ?! m. y' p& `An interview with Australian gold medallist Ian Thorpe revealed that his 400. M& l1 C) O( W3 q6 }
-metre freestyle time improved by 5 seconds between the ages of 15 and 16.
! k& W" m$ _6 {For regular people, including Callaway, it may be hard to imagine what an
" L% y$ S7 x" p- `elite swimmer can achieve as he or she matures and undergoes scientific and
/ v: B3 t* R$ q3 n" C2 v% ~8 ppersistent training. But jumping to the conclusion that it is “anomalous” |8 G& E' G9 f2 q
based on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.
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Third, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook
6 W2 ~0 a2 \5 _6 a- Wexample of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in* D$ }$ ?2 x( t. e5 a
the last 50 metres, but Lochte had a huge lead in the first 300 metres, so- f0 Y, s2 e) w, n* c
he chose not to push himself too hard and to conserve his energy for later) p( \# Y: T) t- N4 A' @
events (whether this conforms to the Olympic spirit and the ‘use one’s( ~& h9 N1 }+ v5 f& n3 O3 u
best efforts to win a match’ requirement that the Badminton World! Q: c7 |" N/ l0 p, X; z
Federation recently invoked to disqualify four badminton pairs is another
. @: `( ]* g1 H6 o% a5 ptopic worth discussing, though probably not in Nature). Ye, on the other2 \, X7 x0 _ O
hand, was trailing behind after the first 300 metres and relied on freestyle6 M, g' z* N0 Y! t; k$ G# s
, in which she has an edge, to win the race. Failing to mention this
" @3 i* d( [; ]& {9 S V4 Istrategic difference, as well as the fact that Lochte is 23.25 seconds
% ?7 ^9 y7 ~$ ?7 b* @- Ofaster (4:05.18) than Ye overall, creates the illusion that a woman swam8 L5 O5 j: K& J/ p$ ?' G, x' P
faster than the best man in the same sport, which sounds impossible. Putting8 b- f* x4 ~8 s- S* K
aside the gender argument, I believe this is still a leading question that
7 C. D% j- N- N' vimplies to the reader that there is something fishy going on.
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! H* w) T" Q2 S) e2 g' kFourth is another example of cherry-picking. In the same event, there are5 n0 L" c( }/ S: _- u8 X" V1 l4 I
four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93' m" F" _) P% _! I. m4 \; T$ w q1 j, V
s) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s- l2 _; }4 D7 O
), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns
* Q, b' j0 l0 _- z$ pout, if we are just talking about the last 50 metres in a 400-metre IM,
5 N& \; t/ u* N$ E, v- eLochter is not the example I would have used if I were the author. What kind
6 I) U: s+ {' Q% F: nof scientific rigorousness is Callaway trying to demonstrate here? Is it9 L6 h7 a4 K9 d3 }* k) G
logical that if Lochter is the champion, we should assume that he leads in
+ F" b; V' n5 L$ n6 O, ?# cevery split? That would be a terrible way to teach the public how science F2 |4 Y; N3 h. ?* `' n- S1 I
works.3 e/ A* S6 }, F
9 ` I, X$ q. Q: @. wFifth is the issue I oppose the most. Callaway quotes Ross Tucker and0 w! V: `1 b1 A+ c5 _+ l6 N# V( u
implies that a drug test cannot rule out the possibility of doping. Is this1 c% u) I7 J1 G
kind of agnosticism what Nature really wants to teach its readers? By that
- }) Y. @. C4 |* j0 Pstandard, I estimate that at least half of the peer-reviewed scientific0 U0 j4 X% F3 U/ l* j5 {. d+ N
papers in Nature should be retracted. How can one convince the editors and
" F2 X+ E6 D: ^reviewers that their proposed theory works for every possible case? One( f" o7 f; }, ]& \) Z3 c
cannot. One chooses to apply the theory to typical examples and to
" I/ E* V2 Q% e0 j! ^1 ldemonstrate that in (hopefully) all scenarios considered, the theory works! ]# ]; y$ L1 Y" [
to a degree, and that that should warrant publication until a counterexample
+ h& p5 l# l$ {/ yis found. I could imagine that Callaway has a sceptical mind, which is2 ?3 q) S2 V; B7 |" n
crucial to scientific thinking, but that would be put to better use if he
$ p& K6 g' ~8 I+ swrote a peer-reviewed paper that discussed the odds of Ye doping on a highly
" t# Z; u' x& Jadvanced, non-detectable drug that the Chinese have come up with in the
& K) l: U3 N3 j6 q5 s6 opast 4 years (they obviously did not have it in Beijing, otherwise why not) \. E- m, ?' |# Z
use it and woo the audience at home?), based on data and rational derivation9 O W# S: s: X# \( a1 j
. This article, however, can be interpreted as saying that all athletes are
2 o/ {* [ v4 X4 ^9 j# Z* ddoping and the authorities are just not good enough to catch them. That may
) N2 h& b9 \! @ j5 Pbe true, logically, but definitely will not make the case if there is ever a+ W% d# i0 O2 S% c
hearing by the governing body for water sports, FINA, to determine if Ye7 ^1 P$ B& h5 F
has doped. To ask whether it is possible to obtain a false negative in a' H1 u0 r8 `2 M9 `
drug test looks like a rigged question to me. Of course it is possible:: ~- J8 M5 i& R+ M, X: p
other than the athlete taking a drug that the test is not designed to detect& f( m+ h5 B( c, U3 z
, anyone who has taken quantum 101 will tell you that everything is
+ X q' s; n d! K, u$ dprobabilistic in nature, and so there is a probability that the drug in an
V& _( u% E% Q" s2 F' h u u0 Qathlete’s system could tunnel out right at the moment of the test. A slight% Q6 {8 f0 k8 T: ~
chance it may be, but should we disregard all test results because of it?$ @4 t6 h) P8 ^0 u& D
Let’s be practical and reasonable, and accept that the World Anti-Doping3 _+ h$ \' W, x
agency (WADA) is competent at its job. Ye’s urine sample will be stored for
7 Z: A% e# D& {. leight years after the contest for future testing as technology advances.7 `) ]: v1 \/ \5 T
Innocent until proven guilty, shouldn’t it be?6 y. [. b) W; ~* k
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Sixth, and the last point I would like to make, is that the out-of-1 A2 Y3 x/ n+ v) E( _
competition drug test is already in effect, which Callaway failed to mention* E" {$ k& R+ M# A
. As noted in the president of WADA’s press release, drug testing for
5 u+ m3 Y) G* O. g% kOlympians began at least six months before the opening of the London5 L, q3 V% d3 R% I( }" K" y: ?# H0 j& J9 ~
Olympics. Furthermore, 107 athletes have been banned from this Olympics for* e: @" O* F$ H8 {9 P
doping. That may be the reason that “everyone will pass at the Olympic/ u6 m0 \/ `9 j0 u
games. Hardly anyone fails in competition testing” — those who did dope' X( Q E7 J- i6 L
have already been caught and sanctioned. Callaway is free to suggest that a' @4 c1 J' l& K; N/ V
player could have doped beforehand and fooled the test at the game, but this
2 e+ t) a9 h- j- a8 Epossibility is certainly ruled out for Ye.
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: j7 g3 S: B$ M# P2 E8 Z( W, ?Over all, even though Callaway did not falsify any data, he did (
( o, K( `2 r- G F" P+ eintentionally or not) cherry-pick data that, in my view, are far too0 y% b- y: `% p" }
suggestive to be fair and unbiased. If you want to cover a story of a
+ s! j5 F' D0 ^, ~7 ssuspected doping from a scientific point of view, be impartial and provide
1 E$ w* L) V7 M8 sall the facts for the reader to judge. You are entitled to your$ q: v- U/ K6 k
interpretation of the facts, and the expression thereof in your piece,( S: z$ G; L- _& O% V4 O1 L6 M
explicitly or otherwise, but showing only evidence that favours your
- T) F$ |+ e0 U- h4 eargument is hardly good science or journalism. Such an article in a journal
. R& o% s* c, C0 [8 Xsuch as Nature is not an appropriate example of how scientific research or
$ o/ K5 e3 Z0 N! {reporting should be done. |
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