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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
, |4 g! i, c/ S& p( U8 \' ?- X如果是中国长大的,英语能到这种程度真是很不简单。* F$ x6 j1 { d' v; Z# {8 U* G
7 I. c1 @' m8 F. g$ {( M Qhttp://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html
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& ?2 q% K7 A2 Q1 @2 t0 vFROM LAI JIANG, Department of Chemistry, University of Pennsylvania
5 p9 V% h; i, k+ T3 h: e5 h% Q
: p, b8 x0 i* f/ E+ k- Q* k0 xIt is a shame to see Nature — which nearly all scientists, including myself
) e$ C( \9 U: Z3 j" [4 @, regard as one of the most prestigious and influential physical-science& n. k7 _* I# A: c) H
magazines — publish a thinly veiled biased article like this. Granted, this
4 m0 c' ?8 J1 d2 {. m, T; His not a peer-reviewed scientific article and did not go through the2 G) ?, H9 G3 Q- ?; c
scrutiny of picking referees. But to serve as a channel for the general6 u: {& O" H% u. R+ u
populace to be in touch with and appreciate science, the authors and editors
0 j. n' {. l/ q- \0 Mshould at least present the readers with facts within the proper context," l5 E8 A M4 J2 D& G& m# r
which they blatantly failed to do.
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First, to identify Ye’s performance increase, Ewen Callaway compared her
% ~3 J9 G2 [/ \) \2 W5 h) O0 f% N/ YOlympic 400-metre IM time with her performance at the World Championships in
/ O$ Z4 e0 R# Q! w, e7 z2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “
" b" g) m4 T: e! D$ A5 a# H2 Sanomalous” improvement of around 7 seconds (6.72 s). In fact, her previous. ~$ O$ R* B. a& G2 j" L6 G3 \4 a
personal best was 4:33.79 at the Asian Games in 2010. This leads to an8 k5 j' P/ `: Q. ^- B
improvement of 5.38 seconds. In a sporting event in which 0.1 s can be the' m S( [; J5 Y; F9 D6 ~7 c+ y
difference between the gold and silver medal, I see no reason for 5.38 s to
9 C( a8 m! D1 Q7 Jbe treated as 7 s.
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. x: o6 H9 q4 |+ k" H0 v2 lSecond, as previously pointed out, Ye is only 16 years old and her body is8 P# O: E3 r3 Z& U' J
still developing. Bettering oneself by 5 seconds over two years may seem- o" D! F$ d0 g9 k& d
impossible for an adult swimmer, but it certainly happens among youngsters.
9 h( d0 l" h2 {- BAn interview with Australian gold medallist Ian Thorpe revealed that his 400
$ }" l2 b4 Q4 V3 f% \; J) Q/ A8 U-metre freestyle time improved by 5 seconds between the ages of 15 and 16. _6 R4 k$ W/ b5 _8 P
For regular people, including Callaway, it may be hard to imagine what an; o; h! b: n- h0 T
elite swimmer can achieve as he or she matures and undergoes scientific and; M8 Q8 G' r; ~5 M( r0 J
persistent training. But jumping to the conclusion that it is “anomalous”
* D) A6 r' I2 H' u8 K5 Q4 I( Kbased on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.
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, g! Z; |9 Z3 w2 _4 c! r: AThird, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook# U; j# G$ o+ Z0 H. @3 L% J
example of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in
7 Z! W6 ?6 ^4 v2 s3 \3 `the last 50 metres, but Lochte had a huge lead in the first 300 metres, so
2 v ~2 D# n C9 y+ t' Z+ Bhe chose not to push himself too hard and to conserve his energy for later
. u2 H$ x/ L5 i' @events (whether this conforms to the Olympic spirit and the ‘use one’s! Z3 |3 _" N# F' v- T$ ?1 p
best efforts to win a match’ requirement that the Badminton World+ b: h. Q0 R8 Z1 Y& s+ {
Federation recently invoked to disqualify four badminton pairs is another3 O" j+ t K) D( z( e) O3 r( P y
topic worth discussing, though probably not in Nature). Ye, on the other9 h' L9 U) F% K% [4 {! e
hand, was trailing behind after the first 300 metres and relied on freestyle
5 A9 P( L4 h8 v/ O, in which she has an edge, to win the race. Failing to mention this
7 a6 B$ \5 X" F7 ^% \, Xstrategic difference, as well as the fact that Lochte is 23.25 seconds; j8 C h! E# n, b, \: C0 [
faster (4:05.18) than Ye overall, creates the illusion that a woman swam
y5 T' r9 |( b8 Rfaster than the best man in the same sport, which sounds impossible. Putting
+ [8 W& u1 X( Gaside the gender argument, I believe this is still a leading question that
% ?, y3 m( D1 J) p) k6 N+ [) i6 zimplies to the reader that there is something fishy going on.. E9 y2 I4 D$ s7 I
+ g% Z; ~3 E. LFourth is another example of cherry-picking. In the same event, there are0 r2 S- ~6 N4 W. x3 ~* U/ [
four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93
+ D' g. M! D' g0 i6 c! vs) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s/ K# |6 | e2 W6 Q/ w! h
), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns
7 a% }" A4 j) A: Iout, if we are just talking about the last 50 metres in a 400-metre IM,# {8 g' m& g: l4 ]+ w6 F9 M
Lochter is not the example I would have used if I were the author. What kind* W# D( h2 \& E
of scientific rigorousness is Callaway trying to demonstrate here? Is it
9 e: i, o6 o5 @ ~logical that if Lochter is the champion, we should assume that he leads in! ^0 u) h8 t9 ]9 O
every split? That would be a terrible way to teach the public how science) w9 z# w1 j R1 j6 R$ Y
works." p5 [' U5 S! F, j
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Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and
2 t+ ]. E1 F1 ?! H# qimplies that a drug test cannot rule out the possibility of doping. Is this# v, h$ y% k9 Y2 P
kind of agnosticism what Nature really wants to teach its readers? By that* o3 T; D/ w d7 E
standard, I estimate that at least half of the peer-reviewed scientific/ ~6 f8 A- e1 k9 [/ p9 ?
papers in Nature should be retracted. How can one convince the editors and
5 t. Z k* R7 {reviewers that their proposed theory works for every possible case? One
. L' S; b+ C% \ Pcannot. One chooses to apply the theory to typical examples and to
) L1 B3 }$ \# Ndemonstrate that in (hopefully) all scenarios considered, the theory works( E+ d+ Z' m. \, }. w+ I" X
to a degree, and that that should warrant publication until a counterexample! F2 ?6 }( z. Z, D" w
is found. I could imagine that Callaway has a sceptical mind, which is3 h0 Z; n0 ^/ O- j4 V
crucial to scientific thinking, but that would be put to better use if he. N# M5 q/ m0 ^1 U7 T! ]! J* K1 x3 I! o
wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly
4 p0 L8 l: q; O+ |. X# M5 ^4 Radvanced, non-detectable drug that the Chinese have come up with in the
6 e, a+ e; F& M+ y6 _past 4 years (they obviously did not have it in Beijing, otherwise why not
6 I, l- @$ Z: y l, d0 ]" v* {use it and woo the audience at home?), based on data and rational derivation) F w9 A; \) F. G' {' x
. This article, however, can be interpreted as saying that all athletes are
6 t% h4 t4 L1 `( b$ Qdoping and the authorities are just not good enough to catch them. That may& o, C% `7 C6 y1 d. g9 W; ~
be true, logically, but definitely will not make the case if there is ever a- k' ^! L3 ?& Y6 d3 {5 n! k% ?" m
hearing by the governing body for water sports, FINA, to determine if Ye
) s9 G1 x! x: ?/ O4 W- F( x0 whas doped. To ask whether it is possible to obtain a false negative in a
+ C4 h) o( N; T) s, ^drug test looks like a rigged question to me. Of course it is possible:6 c) U% F4 X8 x6 ?- D
other than the athlete taking a drug that the test is not designed to detect( ~$ z9 X! }+ Z8 y5 ]# v4 K
, anyone who has taken quantum 101 will tell you that everything is
1 J8 A0 k1 `% s# X5 wprobabilistic in nature, and so there is a probability that the drug in an0 M: O) D4 B) Y2 X& r
athlete’s system could tunnel out right at the moment of the test. A slight' \+ X% L. G7 y' j$ w5 s k1 Z
chance it may be, but should we disregard all test results because of it?0 H/ d& |! w- {7 _% w
Let’s be practical and reasonable, and accept that the World Anti-Doping
$ w" A# b E- }+ w. z( I6 gagency (WADA) is competent at its job. Ye’s urine sample will be stored for
$ b$ V9 _9 b. C0 T9 h' O- veight years after the contest for future testing as technology advances.
' `. Y; K! l3 C. }8 D$ r1 Z6 zInnocent until proven guilty, shouldn’t it be?
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6 U, l; H e1 V' ?5 w% qSixth, and the last point I would like to make, is that the out-of-
+ M+ h" v2 J* J; p' N. Ccompetition drug test is already in effect, which Callaway failed to mention3 q, s, k" c+ }( B/ Z/ s5 z5 V4 N
. As noted in the president of WADA’s press release, drug testing for0 w3 E' j* y+ P$ m3 M O
Olympians began at least six months before the opening of the London
9 ?6 D( |. |/ n2 E9 p- XOlympics. Furthermore, 107 athletes have been banned from this Olympics for
2 W6 K6 Y! Z" n5 ^+ O/ xdoping. That may be the reason that “everyone will pass at the Olympic
/ J% s: W, `' \2 p7 fgames. Hardly anyone fails in competition testing” — those who did dope T( N2 N" ?1 u& j# h
have already been caught and sanctioned. Callaway is free to suggest that a- V. t* J' J' A" w' W7 ^8 L
player could have doped beforehand and fooled the test at the game, but this
7 o Z, Z0 M9 A* Lpossibility is certainly ruled out for Ye.! e u9 j; L6 g# p
! b$ c$ w: k1 L, e/ g7 VOver all, even though Callaway did not falsify any data, he did (8 C8 f$ B w" _2 u9 [ U
intentionally or not) cherry-pick data that, in my view, are far too
! m( M/ d0 k0 ^: m( c5 l2 }/ ~( dsuggestive to be fair and unbiased. If you want to cover a story of a! Z$ p5 ~, ~- K& A
suspected doping from a scientific point of view, be impartial and provide
: D3 Y) E. I% P2 vall the facts for the reader to judge. You are entitled to your8 E1 U2 D L; U6 \# a* g
interpretation of the facts, and the expression thereof in your piece,/ p9 H3 u8 H& Y- r) M
explicitly or otherwise, but showing only evidence that favours your
[1 w ]# E0 Targument is hardly good science or journalism. Such an article in a journal
c( d" ^& n( k( ~such as Nature is not an appropriate example of how scientific research or# y$ T: i/ l9 p Q1 I( z# E
reporting should be done. |
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