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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' X5 S8 y _: ?; c
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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& w+ e" x% D: y9 eFROM LAI JIANG, Department of Chemistry, University of Pennsylvania" k* D4 n/ ?, T$ q3 ]
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It is a shame to see Nature — which nearly all scientists, including myself
1 S+ R! x, D; H" Q% k, regard as one of the most prestigious and influential physical-science
' g! x5 |; q) K5 h' ]' [magazines — publish a thinly veiled biased article like this. Granted, this7 ]9 O# C. F J1 _ v) ]5 z$ Y7 k
is not a peer-reviewed scientific article and did not go through the1 M# N+ V! ?, x
scrutiny of picking referees. But to serve as a channel for the general
9 A& `) ?; D# \4 t/ T# C3 p* C' Wpopulace to be in touch with and appreciate science, the authors and editors
4 N; a1 `! V" q7 H' G# Qshould at least present the readers with facts within the proper context," N+ h0 C9 N8 c' J
which they blatantly failed to do.
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, I# I$ Z9 t$ U" Y, SFirst, to identify Ye’s performance increase, Ewen Callaway compared her
; Y6 N* ?6 L0 ~, e5 ~" c) oOlympic 400-metre IM time with her performance at the World Championships in+ Q R; }* ?7 H" ?
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “
1 f$ f- r! h9 ~2 q7 S& Z1 Wanomalous” improvement of around 7 seconds (6.72 s). In fact, her previous5 T, \/ |- \9 x1 r
personal best was 4:33.79 at the Asian Games in 2010. This leads to an0 V. p y1 A( r; F/ Z3 Q
improvement of 5.38 seconds. In a sporting event in which 0.1 s can be the
9 F) \; B; |* b I% L2 X, y4 h5 Q Vdifference between the gold and silver medal, I see no reason for 5.38 s to- T8 }2 \: s: x6 c' Y2 Z5 ~* z% x
be treated as 7 s., T$ i/ C+ n1 p* z7 o, Z& }
7 n, n) a5 @& D% h. TSecond, as previously pointed out, Ye is only 16 years old and her body is5 b: w2 {5 \+ k6 |* N
still developing. Bettering oneself by 5 seconds over two years may seem
/ }2 |' }# ~/ B6 }! M' S; i* qimpossible for an adult swimmer, but it certainly happens among youngsters.+ M1 M( G" @4 o' L6 y. }2 t
An interview with Australian gold medallist Ian Thorpe revealed that his 400
3 @. ?1 A( x% b n! _6 ?; C; o& n-metre freestyle time improved by 5 seconds between the ages of 15 and 16.$ m# V' j6 c, @; O" U, E
For regular people, including Callaway, it may be hard to imagine what an
, [5 w1 S: M. k3 Z4 v3 Y+ \! [, ]elite swimmer can achieve as he or she matures and undergoes scientific and
8 a `2 ~: N4 B! u7 ^8 mpersistent training. But jumping to the conclusion that it is “anomalous”3 N: J% \1 V+ {7 [! h
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
{. v$ `0 P3 a' ?- E5 k* C8 jexample of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in
" Y: c2 O" t5 f$ s7 J0 Qthe last 50 metres, but Lochte had a huge lead in the first 300 metres, so
( i# H4 h7 o: M! Y6 [/ }5 ]* t9 ihe chose not to push himself too hard and to conserve his energy for later& i+ N& v9 F* p! ^
events (whether this conforms to the Olympic spirit and the ‘use one’s
t+ B, @( p2 c6 g% r; }best efforts to win a match’ requirement that the Badminton World0 e# w4 H) ]4 _7 q( ]
Federation recently invoked to disqualify four badminton pairs is another2 {$ B1 F2 ]9 O. P& {2 r
topic worth discussing, though probably not in Nature). Ye, on the other% I5 m! @: |' I# b. F/ B- F p" o
hand, was trailing behind after the first 300 metres and relied on freestyle% q9 C+ {# h+ N( S% p
, in which she has an edge, to win the race. Failing to mention this q$ q- A2 p' S
strategic difference, as well as the fact that Lochte is 23.25 seconds
0 ?- a% Q/ Q/ v: c9 e% Gfaster (4:05.18) than Ye overall, creates the illusion that a woman swam3 W0 S) y9 x5 Y+ g" `
faster than the best man in the same sport, which sounds impossible. Putting
+ s) _0 m/ B4 [% Saside the gender argument, I believe this is still a leading question that7 F' @8 q# l: O% E0 b- J/ a
implies 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 are0 W: s$ k+ Z) D0 H! x3 b! a3 n% R
four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.935 u3 H6 A% p8 B+ C$ t. p E. [6 Z
s) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s
6 X& ]6 u7 r# z! b( w/ |), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns
; Z! i7 F3 s: m- Lout, if we are just talking about the last 50 metres in a 400-metre IM,
- |7 k( l1 I5 p; r) r9 f& BLochter is not the example I would have used if I were the author. What kind
) i2 C* O2 P, g7 z" @+ X) s1 xof scientific rigorousness is Callaway trying to demonstrate here? Is it
, d i/ u. o1 W+ d8 elogical that if Lochter is the champion, we should assume that he leads in- r- Q! y8 |# w' E$ f
every split? That would be a terrible way to teach the public how science
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! r( g6 g; `. jFifth is the issue I oppose the most. Callaway quotes Ross Tucker and% m+ v) _0 Q7 }3 O
implies that a drug test cannot rule out the possibility of doping. Is this4 ` P+ ]+ h# N1 d3 a1 Q
kind of agnosticism what Nature really wants to teach its readers? By that1 m% L8 `& F; n3 | x! Y& ~
standard, I estimate that at least half of the peer-reviewed scientific
H" U" v" X1 E7 vpapers in Nature should be retracted. How can one convince the editors and: y6 M- s2 W7 J9 F! m
reviewers that their proposed theory works for every possible case? One
8 ~ x6 `! _* G, @% Zcannot. One chooses to apply the theory to typical examples and to- o: u& e r/ q1 E/ S
demonstrate that in (hopefully) all scenarios considered, the theory works9 R; ?! [! {! V( U. y
to a degree, and that that should warrant publication until a counterexample
3 {/ F4 S$ [: I" W5 t, ?is found. I could imagine that Callaway has a sceptical mind, which is
u' O9 L' }( T( ?; tcrucial to scientific thinking, but that would be put to better use if he P) V4 A0 a+ X/ w
wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly4 ~9 Y; w2 `+ o ]3 n
advanced, non-detectable drug that the Chinese have come up with in the
2 B0 f) v( O! |" W- y' T. F# Y4 Lpast 4 years (they obviously did not have it in Beijing, otherwise why not7 U! S) W1 k( _, _# V P0 N6 R
use it and woo the audience at home?), based on data and rational derivation) b, R/ j: q$ P/ B
. This article, however, can be interpreted as saying that all athletes are
" ?; `( _% @. Y- Z; ]& `7 qdoping and the authorities are just not good enough to catch them. That may4 Z2 l+ ?2 l& v
be true, logically, but definitely will not make the case if there is ever a
- k' i4 Z5 J7 m: Y% c/ ahearing by the governing body for water sports, FINA, to determine if Ye
' F* |* R& @ uhas doped. To ask whether it is possible to obtain a false negative in a
% X+ a& |. d$ G5 v" m- b; X4 odrug test looks like a rigged question to me. Of course it is possible:7 J: R4 V6 c3 k. W
other than the athlete taking a drug that the test is not designed to detect `' @) w. E) i" {( | z4 c
, anyone who has taken quantum 101 will tell you that everything is
4 O/ l+ _; G# f6 d0 T$ l) Lprobabilistic in nature, and so there is a probability that the drug in an8 ~- o: R" P5 c( y
athlete’s system could tunnel out right at the moment of the test. A slight5 b/ F1 D) `0 c
chance it may be, but should we disregard all test results because of it?
2 x# I2 d" z! Y1 g! ALet’s be practical and reasonable, and accept that the World Anti-Doping
5 u; i9 k( x3 Iagency (WADA) is competent at its job. Ye’s urine sample will be stored for. o* Q5 { A; M. ^& y7 r
eight years after the contest for future testing as technology advances.
+ s+ K/ l, I; i5 qInnocent until proven guilty, shouldn’t it be?/ O8 t8 f- b8 `6 a) ^+ c6 D0 }
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Sixth, and the last point I would like to make, is that the out-of-
% l4 `% [$ P6 }* wcompetition drug test is already in effect, which Callaway failed to mention
# |" r( p( Y: `% s. As noted in the president of WADA’s press release, drug testing for" q' R9 x3 i) s1 Q7 S V
Olympians began at least six months before the opening of the London1 L! A! C0 i' @' z8 v" D
Olympics. Furthermore, 107 athletes have been banned from this Olympics for
# f6 C6 c, e; p9 x2 L) c& Odoping. That may be the reason that “everyone will pass at the Olympic: J0 v- t1 b+ U5 T
games. Hardly anyone fails in competition testing” — those who did dope$ Z" k( L8 [7 Y# @! U" c" l ?3 ~
have already been caught and sanctioned. Callaway is free to suggest that a
6 D- G5 Z, |; u, ~9 ]player could have doped beforehand and fooled the test at the game, but this R8 i" {6 _1 w8 g3 [0 j- o
possibility is certainly ruled out for Ye.
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Over all, even though Callaway did not falsify any data, he did () e& {- M3 a* q$ P, A% T% T4 W' t
intentionally or not) cherry-pick data that, in my view, are far too
- ?, S! w7 a8 {. T$ w) y0 e3 Nsuggestive to be fair and unbiased. If you want to cover a story of a
# W7 v( x+ j& C' [0 Q, d( `suspected doping from a scientific point of view, be impartial and provide7 y, ]# m" u/ |3 y. N4 e: ?( a$ H
all the facts for the reader to judge. You are entitled to your; X/ c3 E }' C5 b
interpretation of the facts, and the expression thereof in your piece,
0 L n- M1 y* w6 Y5 Mexplicitly or otherwise, but showing only evidence that favours your
; o: i, H% k0 K# k4 U7 xargument is hardly good science or journalism. Such an article in a journal/ p7 Y$ A: {- M6 S
such as Nature is not an appropriate example of how scientific research or
& y" c3 z, ?% V6 Wreporting should be done. |
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