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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) J3 O% m4 k# d+ x1 P# M- F
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" y/ c" s0 O" w) |& O6 M/ z6 b
& y3 [# N9 }0 u) [2 xFROM LAI JIANG, Department of Chemistry, University of Pennsylvania7 K6 a" w! f& b# V! x- R w
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It is a shame to see Nature — which nearly all scientists, including myself7 ^$ V$ R4 O: N6 z
, regard as one of the most prestigious and influential physical-science
; M9 f/ O0 j* t5 m9 a; Smagazines — publish a thinly veiled biased article like this. Granted, this
5 V0 J0 ^6 R, M |is not a peer-reviewed scientific article and did not go through the
5 o/ v5 @- h# \2 b) d# vscrutiny of picking referees. But to serve as a channel for the general
) P$ O. n! i; ~3 R, I; }5 J0 Xpopulace to be in touch with and appreciate science, the authors and editors
5 V3 n' I: |0 v6 H Ashould at least present the readers with facts within the proper context,% v1 G9 |2 F7 X2 K7 T, k% ` Q
which they blatantly failed to do.
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First, to identify Ye’s performance increase, Ewen Callaway compared her
/ O! Y# l; @: u8 e+ X9 J/ G2 mOlympic 400-metre IM time with her performance at the World Championships in
] ^! B3 E" R: f* x& N2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “
: \9 Q. Q A( x1 S! fanomalous” improvement of around 7 seconds (6.72 s). In fact, her previous, {, h( D* K) ~4 a+ F n
personal best was 4:33.79 at the Asian Games in 2010. This leads to an
# E* M, P8 k9 u2 \- \/ Fimprovement of 5.38 seconds. In a sporting event in which 0.1 s can be the
$ a) {4 |/ ?) @difference between the gold and silver medal, I see no reason for 5.38 s to0 ?' e4 [# c3 C$ W/ l; J3 I Z
be treated as 7 s.
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I+ a" o5 g# M. SSecond, as previously pointed out, Ye is only 16 years old and her body is8 N( J4 |8 J- b- A8 f5 ?2 h4 G! r
still developing. Bettering oneself by 5 seconds over two years may seem
# k! ]. p; P/ a$ V& t+ }) l9 Mimpossible for an adult swimmer, but it certainly happens among youngsters.* K) g# d5 g) ~" w# l( S; y5 h
An interview with Australian gold medallist Ian Thorpe revealed that his 400' N% s3 U. n" E) n2 h
-metre freestyle time improved by 5 seconds between the ages of 15 and 16.
, M7 T# @. \( D8 e+ H+ z" GFor regular people, including Callaway, it may be hard to imagine what an: ?. D; _; |" ?* B
elite swimmer can achieve as he or she matures and undergoes scientific and/ k B1 \2 o2 M) n8 Z
persistent training. But jumping to the conclusion that it is “anomalous”
. ^0 D% u* p# Sbased on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.
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+ w+ l, m+ b) A$ V- N) `' ZThird, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook
. {# G- g1 [+ {; z! qexample of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in
$ L8 m) m7 ^/ Fthe last 50 metres, but Lochte had a huge lead in the first 300 metres, so5 y# g8 D G8 t) t* ?/ M
he chose not to push himself too hard and to conserve his energy for later
, m6 h0 \) W" z5 ]1 R5 J, Wevents (whether this conforms to the Olympic spirit and the ‘use one’s
- l9 m/ S* n' B& N+ I0 s1 Gbest efforts to win a match’ requirement that the Badminton World
; q: n, R/ w, @& O; ?5 d8 UFederation recently invoked to disqualify four badminton pairs is another
; @4 j: A3 J' [0 J1 }2 Ftopic worth discussing, though probably not in Nature). Ye, on the other
6 U, b. i7 I A# y2 P# ]% jhand, was trailing behind after the first 300 metres and relied on freestyle
: F/ \" m: F$ [2 F5 w, in which she has an edge, to win the race. Failing to mention this7 e6 h: P3 q$ `( l. q }! G
strategic difference, as well as the fact that Lochte is 23.25 seconds
) P0 W3 S; j1 T3 F y0 r. U6 Mfaster (4:05.18) than Ye overall, creates the illusion that a woman swam/ S9 q2 ]8 Z/ s& I8 [3 o* {9 v3 y
faster than the best man in the same sport, which sounds impossible. Putting
0 \/ [$ y ^9 s5 x; _aside the gender argument, I believe this is still a leading question that
3 n3 q8 R' D9 V: e( U6 g1 Y- Fimplies to the reader that there is something fishy going on.
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/ Z: J3 `) v& q, EFourth is another example of cherry-picking. In the same event, there are
, q9 r$ u- }& _) Dfour male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93/ Q$ | z0 g2 X) F+ P
s) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s; Y2 u# v" {6 Z! w. t4 H
), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns
) P2 ~0 b0 g2 s! D4 ?2 Xout, if we are just talking about the last 50 metres in a 400-metre IM,( g" v, g& i9 E& G( e7 h
Lochter is not the example I would have used if I were the author. What kind4 M' D" u% c3 M( T1 ^$ A
of scientific rigorousness is Callaway trying to demonstrate here? Is it
: _9 f% Y, l5 I- plogical that if Lochter is the champion, we should assume that he leads in/ x0 g5 `0 z6 V/ |
every split? That would be a terrible way to teach the public how science
5 n9 o8 Z' s x- z3 N1 q+ Uworks.4 Q! f3 m1 B. h3 P3 t
" ?% S% v) c/ Y8 G' eFifth is the issue I oppose the most. Callaway quotes Ross Tucker and
( D8 M x2 X6 v- {implies that a drug test cannot rule out the possibility of doping. Is this
# L" H& A9 i: e W4 N$ \kind of agnosticism what Nature really wants to teach its readers? By that' `. _* i1 v8 ^% C+ n: t8 F( F
standard, I estimate that at least half of the peer-reviewed scientific, D ~4 P0 @' o! W: t F9 P' f
papers in Nature should be retracted. How can one convince the editors and+ y3 k, s; T% g G0 |8 o0 L" f
reviewers that their proposed theory works for every possible case? One6 B6 s' q: `8 k+ @9 r1 ]( E
cannot. One chooses to apply the theory to typical examples and to
, M# g* l6 c% Ldemonstrate that in (hopefully) all scenarios considered, the theory works
# r9 e/ b, I. Y' d) u! K3 l) L' {to a degree, and that that should warrant publication until a counterexample
3 k) O Q' J% O" ~% C3 x+ Nis found. I could imagine that Callaway has a sceptical mind, which is
( ?+ {, ?2 d* x' {/ S# ]crucial to scientific thinking, but that would be put to better use if he2 E% q5 B! Q; V! g
wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly
7 l) z. t( v" H3 q0 S! V2 L- g" x% Dadvanced, non-detectable drug that the Chinese have come up with in the
0 z! P0 Z) l; N' A; C+ Cpast 4 years (they obviously did not have it in Beijing, otherwise why not
( Y/ O) o8 e1 luse it and woo the audience at home?), based on data and rational derivation
1 h" U6 d a, V. This article, however, can be interpreted as saying that all athletes are! T8 W( U. P, M# t! B3 u
doping and the authorities are just not good enough to catch them. That may
9 z" w& ]: K% ~# ^2 i Obe true, logically, but definitely will not make the case if there is ever a5 r! Y! t! d3 e/ e) W
hearing by the governing body for water sports, FINA, to determine if Ye
/ L% |: {' P) p A! }has doped. To ask whether it is possible to obtain a false negative in a0 [4 p: S/ \# y2 }; _6 ?
drug test looks like a rigged question to me. Of course it is possible:
; d$ @2 {+ s' x" \4 T# Cother than the athlete taking a drug that the test is not designed to detect! W& C7 i9 w/ j* E3 C
, anyone who has taken quantum 101 will tell you that everything is
; T( G! b: {2 P. {7 `' Aprobabilistic in nature, and so there is a probability that the drug in an
8 _6 G1 O& ]# g R. B( F8 R8 Vathlete’s system could tunnel out right at the moment of the test. A slight
7 g9 N% R8 [+ O0 ^0 G2 g1 F/ dchance it may be, but should we disregard all test results because of it?
+ }9 C2 \1 g) S. z. c7 T: j; {Let’s be practical and reasonable, and accept that the World Anti-Doping' F) O+ z, A) Z S# r* `
agency (WADA) is competent at its job. Ye’s urine sample will be stored for
. Z; a u/ Y% N: k' r6 peight years after the contest for future testing as technology advances.
! I) c4 x( S, E; t. B1 [Innocent until proven guilty, shouldn’t it be?& C. o) K" [" d) y4 M D' x" f
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Sixth, and the last point I would like to make, is that the out-of-
1 G% p; R3 J- l V8 s5 v5 r$ U" fcompetition drug test is already in effect, which Callaway failed to mention7 N" n8 X, y0 W0 S
. As noted in the president of WADA’s press release, drug testing for
: ~! L& B8 G+ d4 o- M3 MOlympians began at least six months before the opening of the London5 F& b4 A) }6 ~& R
Olympics. Furthermore, 107 athletes have been banned from this Olympics for
' s& \7 {* N+ P1 M2 U- Ldoping. That may be the reason that “everyone will pass at the Olympic1 ^) U+ V7 J: z5 c+ J
games. Hardly anyone fails in competition testing” — those who did dope
5 X8 ]6 }" J+ m6 J) Q( q+ ?- F6 }have already been caught and sanctioned. Callaway is free to suggest that a6 ^7 G; O) M8 L
player could have doped beforehand and fooled the test at the game, but this
1 I1 X; U$ r4 x& k* Wpossibility is certainly ruled out for Ye.) C5 V( k% B2 w
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Over all, even though Callaway did not falsify any data, he did (2 P$ y8 @" a, ?# ~- D
intentionally or not) cherry-pick data that, in my view, are far too$ F; N% L8 [* W+ }2 {& i' n
suggestive to be fair and unbiased. If you want to cover a story of a
* ]9 P9 g t5 n/ Dsuspected doping from a scientific point of view, be impartial and provide* v" {" i. ]- i% y8 a
all the facts for the reader to judge. You are entitled to your
+ y; P, ]+ Q+ G3 |interpretation of the facts, and the expression thereof in your piece,7 A1 D& C% S, `( s u7 t4 C
explicitly or otherwise, but showing only evidence that favours your
! B% Q1 O5 O* ~" \argument is hardly good science or journalism. Such an article in a journal2 ]' n5 F r/ u2 C
such as Nature is not an appropriate example of how scientific research or8 O# N4 G1 o: ~: p% @( r
reporting should be done. |
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