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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" P, \/ T! h; p I) o2 ~
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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' R& o& y3 Y4 D& lhttp://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html
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6 x s! O) T8 F! U3 d; a* MFROM LAI JIANG, Department of Chemistry, University of Pennsylvania/ }2 v' \3 ~' E, @
& f- E. P; ]. e8 B/ j8 T6 rIt is a shame to see Nature — which nearly all scientists, including myself
+ a5 I+ v# Z8 |& U6 S$ @5 ?+ ?5 k, regard as one of the most prestigious and influential physical-science5 V1 P, o' q2 K# ?( l. X' \' {7 g
magazines — publish a thinly veiled biased article like this. Granted, this
5 A+ U$ M6 Z# T" P' G; Xis not a peer-reviewed scientific article and did not go through the
$ y; w: ?" g& m0 i C1 O& M% wscrutiny of picking referees. But to serve as a channel for the general
7 m) y& M- i5 w8 H. Zpopulace to be in touch with and appreciate science, the authors and editors
1 h4 j8 U6 o% E' Gshould at least present the readers with facts within the proper context,7 i) y( N5 B( {! [& i/ }& h, j0 ~
which they blatantly failed to do.
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First, to identify Ye’s performance increase, Ewen Callaway compared her
/ ^; O0 Z4 Q+ w$ I4 xOlympic 400-metre IM time with her performance at the World Championships in
% l5 _; I/ u( i3 r/ ~2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “ {/ I ~; Z+ ?* {+ N- N) X
anomalous” improvement of around 7 seconds (6.72 s). In fact, her previous
9 w0 a& o- ~; K$ D% Q- Xpersonal best was 4:33.79 at the Asian Games in 2010. This leads to an' D$ @! X% F# B" q8 X
improvement of 5.38 seconds. In a sporting event in which 0.1 s can be the
& Y" V8 o7 P1 a" N; Zdifference between the gold and silver medal, I see no reason for 5.38 s to8 Q! Z4 E9 t; c$ c1 T
be treated as 7 s.( F3 Q& ?: f; U, u% \& S
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Second, as previously pointed out, Ye is only 16 years old and her body is+ D- I5 _3 M# K5 |8 g3 I
still developing. Bettering oneself by 5 seconds over two years may seem
$ N) V3 |/ V0 b; F* @9 `, rimpossible for an adult swimmer, but it certainly happens among youngsters.
# T& J r, [, E6 ]An interview with Australian gold medallist Ian Thorpe revealed that his 400( }; }. X$ y- u- X, C
-metre freestyle time improved by 5 seconds between the ages of 15 and 16.4 D5 E( I. o1 b5 s+ ~% Y6 t
For regular people, including Callaway, it may be hard to imagine what an
, t. W, M5 @$ V, E& B- _4 Selite swimmer can achieve as he or she matures and undergoes scientific and
" k P6 r C$ {' I- j5 \persistent training. But jumping to the conclusion that it is “anomalous”3 u8 ]% i2 I4 ^' _5 l: f( ~
based on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound." a3 c8 {$ E; _. W) r8 M# o- p$ W
& ?! L% e6 L( n, k' G" i& IThird, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook9 b* o$ y9 ^9 y% c
example of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in
0 R2 ?8 y2 [$ k4 A' e2 i. V* Wthe last 50 metres, but Lochte had a huge lead in the first 300 metres, so6 h. V H. B2 j" u! R
he chose not to push himself too hard and to conserve his energy for later
9 H1 ^, Q: q# L; y5 T7 y* M, \events (whether this conforms to the Olympic spirit and the ‘use one’s# ^3 \4 c6 K1 k2 S ~" |& Q+ [
best efforts to win a match’ requirement that the Badminton World
4 Q$ A, P9 O0 y9 W1 Y& rFederation recently invoked to disqualify four badminton pairs is another
6 j, ^7 C8 k( E) I+ G. Jtopic worth discussing, though probably not in Nature). Ye, on the other, A# ?7 a9 `" V7 r M
hand, was trailing behind after the first 300 metres and relied on freestyle& l7 O5 i+ `8 L" l5 d0 e
, in which she has an edge, to win the race. Failing to mention this+ z7 d8 `+ {7 R& Q. F( s" k- x- t
strategic difference, as well as the fact that Lochte is 23.25 seconds
6 L* y( z+ _ ^: }faster (4:05.18) than Ye overall, creates the illusion that a woman swam2 V, S5 L$ F0 m; B! `$ j" |
faster than the best man in the same sport, which sounds impossible. Putting4 K6 U- z0 e* z1 d
aside the gender argument, I believe this is still a leading question that
, B# g2 j7 {( D/ c; u g8 a8 |implies to the reader that there is something fishy going on.. W" c4 v+ f Q1 H$ O
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Fourth is another example of cherry-picking. In the same event, there are
2 P) G: R2 ^3 B8 g* n* u) @) Rfour male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.937 H8 E8 {, L+ m$ q& X
s) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s) E* H% f* z9 H7 r
), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns
$ |' F4 ~% K1 ^out, if we are just talking about the last 50 metres in a 400-metre IM,- x; _: k' V1 M; d! b3 d7 E
Lochter is not the example I would have used if I were the author. What kind2 @8 Q: j" @7 J! G" g
of scientific rigorousness is Callaway trying to demonstrate here? Is it
! H4 n: E% B7 H( |; ?$ m9 R0 c7 o: W ^logical that if Lochter is the champion, we should assume that he leads in' e- Y, {% P3 B4 O
every split? That would be a terrible way to teach the public how science: @: d( |* d* q1 @4 ?" ]0 V5 l" J
works.& [9 S, G$ K# j7 b: k
( n& T9 H6 u: O" ^) qFifth is the issue I oppose the most. Callaway quotes Ross Tucker and
% W% e! Z9 M/ [+ l0 M8 `implies that a drug test cannot rule out the possibility of doping. Is this, P" |& M Y Z5 L
kind of agnosticism what Nature really wants to teach its readers? By that
, R* m* Y% n+ l+ Q2 Y; x4 Q5 d3 fstandard, I estimate that at least half of the peer-reviewed scientific
% P% t0 ]' r8 d- ` T+ K! u( ~5 A1 b; ?papers in Nature should be retracted. How can one convince the editors and
, X3 y6 l! g/ Breviewers that their proposed theory works for every possible case? One
$ |$ d) C3 n8 icannot. One chooses to apply the theory to typical examples and to L9 F; M- a& ]) O
demonstrate that in (hopefully) all scenarios considered, the theory works1 v; B% q% C7 s
to a degree, and that that should warrant publication until a counterexample
( f& j. z. h3 g5 d- c- q+ ^is found. I could imagine that Callaway has a sceptical mind, which is
% ~$ ?, E0 ?; H) \2 f$ [crucial to scientific thinking, but that would be put to better use if he
- J5 `8 v2 l$ m0 ]wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly* A& ~3 J+ A H
advanced, non-detectable drug that the Chinese have come up with in the! _! R( q5 e" I7 ^ w* w: m* J
past 4 years (they obviously did not have it in Beijing, otherwise why not8 O% z9 y2 d1 r' E) V1 `( d* k
use it and woo the audience at home?), based on data and rational derivation5 [5 A8 ~1 }. ?" B% Y5 \/ T, ^
. This article, however, can be interpreted as saying that all athletes are
9 |8 _$ w4 v0 }0 r9 kdoping and the authorities are just not good enough to catch them. That may* e! }3 J2 u" M: v# y- `
be true, logically, but definitely will not make the case if there is ever a
/ j' |( e, F2 i% Y" ]5 Zhearing by the governing body for water sports, FINA, to determine if Ye
k' _1 ^. F" v/ L3 q7 ^has doped. To ask whether it is possible to obtain a false negative in a
# {* D" ]. E- o; {2 j& Edrug test looks like a rigged question to me. Of course it is possible:3 R, u* q1 q% a- {9 }3 \4 I! e1 {# s
other than the athlete taking a drug that the test is not designed to detect. E& D! ~1 ^0 }5 ?' g
, anyone who has taken quantum 101 will tell you that everything is
' p! e. e* j( v& Wprobabilistic in nature, and so there is a probability that the drug in an
0 q* v3 q8 d4 b# J- J- Wathlete’s system could tunnel out right at the moment of the test. A slight
+ e/ h+ T; k, }( hchance it may be, but should we disregard all test results because of it?
& x' A7 @) e/ l9 z JLet’s be practical and reasonable, and accept that the World Anti-Doping- S$ x9 a, O2 m {: P( K4 D. B7 ]
agency (WADA) is competent at its job. Ye’s urine sample will be stored for
+ Q1 K/ _; f j7 Q7 M* g- z: xeight years after the contest for future testing as technology advances.
7 E0 ]8 X3 r2 C. E" [$ pInnocent until proven guilty, shouldn’t it be?' s# |" ]2 Y) s. g) A# u
a- b- }6 d: u7 H, G, ^: xSixth, and the last point I would like to make, is that the out-of-
# ^' [4 C" R( D; ?; C1 T" d; rcompetition drug test is already in effect, which Callaway failed to mention* Z- |) j5 N" C% N* ]
. As noted in the president of WADA’s press release, drug testing for
+ [* r: l" x4 H# v% d2 k2 j7 g; AOlympians began at least six months before the opening of the London( {) a" w- b5 @5 c: L4 [
Olympics. Furthermore, 107 athletes have been banned from this Olympics for
: r! d$ i- Z3 T! m O$ Fdoping. That may be the reason that “everyone will pass at the Olympic
. K- f- |4 z/ l# f" x6 kgames. Hardly anyone fails in competition testing” — those who did dope
) u+ L/ s/ _" y8 ahave already been caught and sanctioned. Callaway is free to suggest that a) c: R2 `9 H. D/ [; |
player could have doped beforehand and fooled the test at the game, but this. f* }& w# D, S" e3 T6 |: ]$ R2 B9 U
possibility is certainly ruled out for Ye.
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+ s" o( ?. n6 V( |6 F3 Q7 V4 nOver all, even though Callaway did not falsify any data, he did (7 b4 K" g( }# N1 J( j
intentionally or not) cherry-pick data that, in my view, are far too; R4 @+ r" w* r9 G8 f1 k" c
suggestive to be fair and unbiased. If you want to cover a story of a3 R* ^5 c/ g6 Y3 j
suspected doping from a scientific point of view, be impartial and provide7 I. s; P. m a5 P* F
all the facts for the reader to judge. You are entitled to your1 t% a/ _1 T/ G Z9 ]4 M
interpretation of the facts, and the expression thereof in your piece,7 m& Q! E1 F% N7 `" a6 X' Y8 j! \1 r
explicitly or otherwise, but showing only evidence that favours your5 w6 b' N4 \3 |- A- k3 e) c; r
argument is hardly good science or journalism. Such an article in a journal. n; \9 U! s7 w' |0 [& w. Y- J
such as Nature is not an appropriate example of how scientific research or
* [" D9 l' R7 N4 ireporting should be done. |
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