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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 JIANG2 }+ x( ?, {) U5 J1 q
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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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 E1 n- D" [- Y9 h
, regard as one of the most prestigious and influential physical-science4 Q( q0 s" w( e4 j
magazines — publish a thinly veiled biased article like this. Granted, this
/ C6 E7 X+ d5 c# ]. Ris not a peer-reviewed scientific article and did not go through the
! @" d2 x* z5 ]$ e& q( t. Fscrutiny of picking referees. But to serve as a channel for the general* W- [) B$ s5 L0 {
populace to be in touch with and appreciate science, the authors and editors
3 v2 ?9 j' t' j+ O; G+ fshould at least present the readers with facts within the proper context,
+ g2 Y3 `2 t" n* e# Owhich they blatantly failed to do.% e; v/ b; e) U* z6 t
: E# c% e p3 A9 {' Q8 _First, to identify Ye’s performance increase, Ewen Callaway compared her
# `6 }$ F5 c7 J3 ?Olympic 400-metre IM time with her performance at the World Championships in
" |& W) x( t; X3 c' e$ U2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “
. p0 Y- l& v8 o) b& [6 Nanomalous” improvement of around 7 seconds (6.72 s). In fact, her previous, U, @; R- T& f: B
personal best was 4:33.79 at the Asian Games in 2010. This leads to an
) E _9 L7 A$ p0 S6 W/ }( Aimprovement of 5.38 seconds. In a sporting event in which 0.1 s can be the
9 T/ q8 c3 ?6 Y. a: s- V0 odifference between the gold and silver medal, I see no reason for 5.38 s to
2 z( v: m4 B4 b1 n/ Dbe treated as 7 s.
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2 B/ W6 | I7 l# hSecond, as previously pointed out, Ye is only 16 years old and her body is
2 i" l' {/ }8 A7 d: C) X. wstill developing. Bettering oneself by 5 seconds over two years may seem+ i" p/ }5 ~6 h& o
impossible for an adult swimmer, but it certainly happens among youngsters.
0 ^" m6 W" A* Q+ K! eAn interview with Australian gold medallist Ian Thorpe revealed that his 400- F4 p3 U( t: F4 k+ q! m$ \$ `% ]
-metre freestyle time improved by 5 seconds between the ages of 15 and 16.
" V: q$ h( M$ e9 }. oFor regular people, including Callaway, it may be hard to imagine what an
& L k9 S- |- ~5 E7 Velite swimmer can achieve as he or she matures and undergoes scientific and8 {* l6 {* v/ l1 O' {+ r$ S+ E6 R2 A
persistent training. But jumping to the conclusion that it is “anomalous”# w, ~; T: ]7 V. N) v! h* P* Z% }
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# W1 N3 R4 v# a5 a: p! a9 y& ?* ^
example of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in
$ {7 C7 X' o# Z. _the last 50 metres, but Lochte had a huge lead in the first 300 metres, so7 e# ]) c: c( U6 {; E$ f" ^% W5 M
he chose not to push himself too hard and to conserve his energy for later
3 l2 G2 V3 G) @events (whether this conforms to the Olympic spirit and the ‘use one’s$ q6 {: y% H6 [
best efforts to win a match’ requirement that the Badminton World, y9 f. f9 p$ m3 _: u
Federation recently invoked to disqualify four badminton pairs is another
! N1 L7 p8 l+ }2 n8 H3 W# Ptopic worth discussing, though probably not in Nature). Ye, on the other
1 f0 [6 _5 J9 y3 J0 F$ ahand, was trailing behind after the first 300 metres and relied on freestyle9 `! D2 X6 C7 T* n7 g
, in which she has an edge, to win the race. Failing to mention this
2 G( _+ l1 U$ Lstrategic difference, as well as the fact that Lochte is 23.25 seconds; P2 {1 H( {" Y t- T- I8 U
faster (4:05.18) than Ye overall, creates the illusion that a woman swam
# z' S) n0 a2 S! N+ Dfaster than the best man in the same sport, which sounds impossible. Putting2 r+ k7 d8 u( V) \- ~8 } b
aside the gender argument, I believe this is still a leading question that
' c2 i# i' c" o: bimplies 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
/ x, E4 G6 O( O; ? o7 Sfour male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.930 Y2 F; }$ @8 @+ |" q. W
s) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s1 g/ [$ V; a* i. ?- w
), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns
6 r* [3 E& q! q- g1 Qout, if we are just talking about the last 50 metres in a 400-metre IM,4 n1 N8 h$ G" G8 D z
Lochter is not the example I would have used if I were the author. What kind
5 t0 @( g8 K3 R" q: M$ Eof scientific rigorousness is Callaway trying to demonstrate here? Is it
$ M7 y9 f. K" p- X# Plogical that if Lochter is the champion, we should assume that he leads in5 n. _! A5 j3 ]9 Z9 N5 j
every split? That would be a terrible way to teach the public how science! @/ F, q$ Y6 M% B C
works.8 K9 n/ L2 ^2 w% `6 c
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Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and& R8 A" W0 {) M, N: v) [6 s
implies that a drug test cannot rule out the possibility of doping. Is this9 k2 \4 \/ j- _7 J; C
kind of agnosticism what Nature really wants to teach its readers? By that6 v' h% \8 C: i3 ]1 b
standard, I estimate that at least half of the peer-reviewed scientific% A1 j- p/ s1 f" g/ r
papers in Nature should be retracted. How can one convince the editors and! W" [. Q0 K# i( i
reviewers that their proposed theory works for every possible case? One/ k; c4 s4 v, \" G
cannot. One chooses to apply the theory to typical examples and to
8 U3 W! v e! Tdemonstrate that in (hopefully) all scenarios considered, the theory works/ t8 D: n3 T3 Y2 Y& \
to a degree, and that that should warrant publication until a counterexample
; l( n# q+ x9 @( q9 z; Nis found. I could imagine that Callaway has a sceptical mind, which is
, \2 O9 M& D# `7 x H7 ocrucial to scientific thinking, but that would be put to better use if he
. s1 X1 h4 U; v' ?wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly. Z5 [* {, x" I: V A- H5 W) [
advanced, non-detectable drug that the Chinese have come up with in the
3 O5 H! {- g N3 f; b( Dpast 4 years (they obviously did not have it in Beijing, otherwise why not
! ~0 x; Y: A: ^* zuse it and woo the audience at home?), based on data and rational derivation+ I9 u5 T! I* ?9 a4 o5 D% e8 p# d
. This article, however, can be interpreted as saying that all athletes are
- ]. ~6 i' \% e) e' vdoping and the authorities are just not good enough to catch them. That may/ ^& B7 A2 ]) u
be true, logically, but definitely will not make the case if there is ever a
7 H( Z9 j5 o, i' [: ]" {hearing by the governing body for water sports, FINA, to determine if Ye8 D9 }; L( `. ]( o
has doped. To ask whether it is possible to obtain a false negative in a3 P+ m3 ?. b7 ]; f( H
drug test looks like a rigged question to me. Of course it is possible:4 |" ]( [1 f O) `' L7 i
other than the athlete taking a drug that the test is not designed to detect$ T3 M. D; g: J' e: }! a
, anyone who has taken quantum 101 will tell you that everything is. I& J( n' E/ e0 g3 j! I5 P
probabilistic in nature, and so there is a probability that the drug in an
# G V( W3 O8 h7 i3 N6 B5 Jathlete’s system could tunnel out right at the moment of the test. A slight
: I9 f6 B; I J0 S% t1 `. xchance it may be, but should we disregard all test results because of it?* a4 T9 g9 P1 K5 l, A5 L
Let’s be practical and reasonable, and accept that the World Anti-Doping/ R6 p+ h9 n5 K1 p! p+ j4 [+ C4 X
agency (WADA) is competent at its job. Ye’s urine sample will be stored for: T7 Z* R6 d2 }
eight years after the contest for future testing as technology advances.: a5 N! ]3 x6 p: B
Innocent until proven guilty, shouldn’t it be?
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. P* D; x4 Y/ K. ZSixth, and the last point I would like to make, is that the out-of-! O" h7 O9 J5 c4 I
competition drug test is already in effect, which Callaway failed to mention6 r3 v6 p3 Z! r8 b/ _' Z
. As noted in the president of WADA’s press release, drug testing for$ `8 t: G$ l9 W3 |* D. m; `
Olympians began at least six months before the opening of the London2 }: _& y- z9 m, O% y2 T: i# J
Olympics. Furthermore, 107 athletes have been banned from this Olympics for
) D6 G6 F! a0 @9 i4 m7 @doping. That may be the reason that “everyone will pass at the Olympic
- a3 c& B' n' S- O0 l9 O$ ?games. Hardly anyone fails in competition testing” — those who did dope9 @9 }# P" u! u2 E/ Y. g9 q: _
have already been caught and sanctioned. Callaway is free to suggest that a
/ e, V3 a, |5 ~2 G0 h% nplayer could have doped beforehand and fooled the test at the game, but this! C& f2 j/ ^$ Q
possibility is certainly ruled out for Ye.
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9 C# C# e* ?- r. @5 tOver all, even though Callaway did not falsify any data, he did (
( ]$ d! j2 Q* W) W: [( [" Dintentionally or not) cherry-pick data that, in my view, are far too
) q. @ k. P( b# b1 I: t. e0 hsuggestive to be fair and unbiased. If you want to cover a story of a" Y# @4 A& C" d
suspected doping from a scientific point of view, be impartial and provide
9 v3 h/ E, ^) [. zall the facts for the reader to judge. You are entitled to your
7 i) D1 p9 B* T( d/ [* Ginterpretation of the facts, and the expression thereof in your piece,- G7 B- ?9 M3 \6 t$ @
explicitly or otherwise, but showing only evidence that favours your
' b8 I1 ]0 i j1 `# L$ Uargument is hardly good science or journalism. Such an article in a journal9 J3 u2 K$ a. d6 M5 [8 D
such as Nature is not an appropriate example of how scientific research or$ x$ L6 ?9 V. Y$ g! T9 b: f
reporting should be done. |
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