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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 JIANG3 q( m# U9 R) |- @
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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2 s3 o! E6 l4 d7 N8 v: r$ aIt is a shame to see Nature — which nearly all scientists, including myself( Y" r& A+ D! W5 M5 `! G
, regard as one of the most prestigious and influential physical-science2 L7 a+ O7 g! `0 N
magazines — publish a thinly veiled biased article like this. Granted, this) T0 p& z+ w/ U% l
is not a peer-reviewed scientific article and did not go through the
+ D5 K9 [7 @( p6 u6 u; o: \4 Mscrutiny of picking referees. But to serve as a channel for the general
v% o" ]1 |+ U2 J/ C5 Q: Zpopulace to be in touch with and appreciate science, the authors and editors, Z1 X7 E5 w/ _! g; c3 D0 n; W
should at least present the readers with facts within the proper context,! x* c. F' |% ]8 S
which they blatantly failed to do.
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6 I* c" U& V7 ?First, to identify Ye’s performance increase, Ewen Callaway compared her
/ e9 }! a8 L% Y$ R# p9 KOlympic 400-metre IM time with her performance at the World Championships in$ M4 Z5 g( i% F
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “
! ^+ r: G6 c8 E. o H; vanomalous” improvement of around 7 seconds (6.72 s). In fact, her previous3 C3 [& U7 }! G
personal best was 4:33.79 at the Asian Games in 2010. This leads to an
0 M" a8 \; j {8 }& `# Yimprovement of 5.38 seconds. In a sporting event in which 0.1 s can be the
- p1 B% n$ v" h+ m9 x6 \difference between the gold and silver medal, I see no reason for 5.38 s to
0 W, V4 J: c# Sbe treated as 7 s.8 v6 S' P5 J! _4 ?( ]( O- B- F& ~: p
0 Q' i) g3 v J; k$ Z9 V \9 x% a& H0 R' ?Second, as previously pointed out, Ye is only 16 years old and her body is
/ R% u- W. I5 e/ {$ M3 Zstill developing. Bettering oneself by 5 seconds over two years may seem) M6 S- F8 `" A1 v# f& |( J
impossible for an adult swimmer, but it certainly happens among youngsters.# h' a" _8 F1 M+ p5 z
An interview with Australian gold medallist Ian Thorpe revealed that his 400/ G1 q" R: A, E' i1 v6 M. ~$ b5 p3 C
-metre freestyle time improved by 5 seconds between the ages of 15 and 16.
* o2 C$ a$ b' \ m! c% o- h* Q$ KFor regular people, including Callaway, it may be hard to imagine what an
$ _, p5 N* |5 q" h/ @& I0 c: aelite swimmer can achieve as he or she matures and undergoes scientific and" Y2 T$ n: v. E1 i8 p
persistent training. But jumping to the conclusion that it is “anomalous”
# f" C# f+ _. d4 q/ Ibased on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.1 X2 n! U3 W4 ]5 Y/ m
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Third, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook
9 e O1 o) L3 f8 w, vexample of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in
$ i9 P. X9 {% j- Ethe last 50 metres, but Lochte had a huge lead in the first 300 metres, so
) h/ E' T' g# h0 s% W; p% Ehe chose not to push himself too hard and to conserve his energy for later4 M8 W4 u, a+ m6 W* |
events (whether this conforms to the Olympic spirit and the ‘use one’s& y; `* g0 V8 U' x2 r$ F3 q
best efforts to win a match’ requirement that the Badminton World* C, W4 S7 y5 a# f0 T6 _& t5 n
Federation recently invoked to disqualify four badminton pairs is another
$ v A* r7 }' ~6 E+ i* ?7 Z* Btopic worth discussing, though probably not in Nature). Ye, on the other. M. _, d& K- ` M0 R( j7 a
hand, was trailing behind after the first 300 metres and relied on freestyle
* @, ?: p) r" p6 s) Y; z6 D. n, in which she has an edge, to win the race. Failing to mention this
) j+ }5 o1 m9 m7 [. D5 estrategic difference, as well as the fact that Lochte is 23.25 seconds+ f4 X0 a) M# Y4 v9 k( J+ T1 q
faster (4:05.18) than Ye overall, creates the illusion that a woman swam
- }' e" _2 e$ i/ b2 G1 V, g+ ifaster than the best man in the same sport, which sounds impossible. Putting
! E2 ]% X) o; i$ [aside the gender argument, I believe this is still a leading question that; }0 N; P, P% C/ t4 k, w! o
implies to the reader that there is something fishy going on.
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& S; k4 K9 L# l& i% bFourth is another example of cherry-picking. In the same event, there are
E v1 g) j5 F8 u8 ~7 c$ Ifour male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93* k# C8 ^2 C E+ f* @
s) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s
% {& X: e; A5 v+ p( K+ e% ~), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns# Z4 W3 b6 Q1 P, i6 d! f
out, if we are just talking about the last 50 metres in a 400-metre IM,0 T! g+ ? D; l# P6 l8 f
Lochter is not the example I would have used if I were the author. What kind
* S* G! s) g" x' I7 _. Y5 kof scientific rigorousness is Callaway trying to demonstrate here? Is it
! [' h# o" b9 H( C" Wlogical that if Lochter is the champion, we should assume that he leads in
+ o6 G* F Q3 D) Q0 O8 Fevery split? That would be a terrible way to teach the public how science
! T9 d( l3 Q! r8 |9 b% ] Kworks.
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Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and5 r4 G) y* _5 [, N/ B
implies that a drug test cannot rule out the possibility of doping. Is this
' j1 i3 S- N0 G7 t9 Fkind of agnosticism what Nature really wants to teach its readers? By that
9 O* K, ]$ o; D- ]4 D C- y5 cstandard, I estimate that at least half of the peer-reviewed scientific+ m, Z( Y0 s0 Q$ t
papers in Nature should be retracted. How can one convince the editors and' g0 l" x- o! E! m: T
reviewers that their proposed theory works for every possible case? One
! W! V% W& l( e; B9 Xcannot. One chooses to apply the theory to typical examples and to
) W1 W7 K1 i: ~! r; e% e, wdemonstrate that in (hopefully) all scenarios considered, the theory works i; T0 \2 W0 g* g1 d# @" a
to a degree, and that that should warrant publication until a counterexample
1 Z* J( Q$ Y, g' Z( Y' ~is found. I could imagine that Callaway has a sceptical mind, which is0 {% W' _! P; S4 U
crucial to scientific thinking, but that would be put to better use if he
& {7 F( ~" p7 P- l# d8 iwrote a peer-reviewed paper that discussed the odds of Ye doping on a highly- R0 q7 ?6 g" L8 D
advanced, non-detectable drug that the Chinese have come up with in the
; B* f, ?& v: H5 Y% h" A; dpast 4 years (they obviously did not have it in Beijing, otherwise why not
1 ^! Y: E4 E, x1 o @+ Ouse it and woo the audience at home?), based on data and rational derivation: m+ k0 U6 x- f3 _
. This article, however, can be interpreted as saying that all athletes are
! o8 f/ J- ~/ s; j7 d1 |- @doping and the authorities are just not good enough to catch them. That may) u/ {! w+ {9 t. ~: Z: G
be true, logically, but definitely will not make the case if there is ever a
, `0 U. b/ i+ I- D# q: S) B' N* qhearing by the governing body for water sports, FINA, to determine if Ye* |5 u5 A( F( D% f- G
has doped. To ask whether it is possible to obtain a false negative in a
; g9 j, O( _/ \# L, Ddrug test looks like a rigged question to me. Of course it is possible:' V* {6 s5 n/ r) G
other than the athlete taking a drug that the test is not designed to detect1 Q2 B- s" X: C9 |: l: ^7 {0 L
, anyone who has taken quantum 101 will tell you that everything is
b$ g* H& p) Iprobabilistic in nature, and so there is a probability that the drug in an
; w2 M1 J6 Q" A0 R5 O1 Jathlete’s system could tunnel out right at the moment of the test. A slight
4 d' |$ V, p3 B' S( }3 \1 rchance it may be, but should we disregard all test results because of it?2 p1 V& g1 [: T+ t+ t
Let’s be practical and reasonable, and accept that the World Anti-Doping5 y4 x5 _" Q$ S) }, S
agency (WADA) is competent at its job. Ye’s urine sample will be stored for
- p1 O. y" a9 l5 [% ?( D$ qeight years after the contest for future testing as technology advances.
. H( N: H4 }, dInnocent until proven guilty, shouldn’t it be?
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Sixth, and the last point I would like to make, is that the out-of-
! b c% o: ? O9 Q0 q8 Vcompetition drug test is already in effect, which Callaway failed to mention
' O+ @2 O; b, {3 l. As noted in the president of WADA’s press release, drug testing for6 l* i+ b, p: D2 B& S$ y6 C1 c
Olympians began at least six months before the opening of the London
) G; _% E" N+ h6 dOlympics. Furthermore, 107 athletes have been banned from this Olympics for' J5 d" r8 @) U
doping. That may be the reason that “everyone will pass at the Olympic
6 l' c/ I. }9 M4 N0 j9 _games. Hardly anyone fails in competition testing” — those who did dope6 Z/ z- |3 @( T
have already been caught and sanctioned. Callaway is free to suggest that a& M+ |- d4 A8 e7 E0 C
player could have doped beforehand and fooled the test at the game, but this
- V) ^3 p& q+ |( ppossibility is certainly ruled out for Ye.
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* l1 o% C" d# hOver all, even though Callaway did not falsify any data, he did (& D p. i# I* C E1 c+ E
intentionally or not) cherry-pick data that, in my view, are far too
, o+ }' _( u e& D! X6 usuggestive to be fair and unbiased. If you want to cover a story of a9 z3 A+ t( O, |. k
suspected doping from a scientific point of view, be impartial and provide) M4 M. Q- n$ s& P+ S& S" W
all the facts for the reader to judge. You are entitled to your
( N0 \) p% V8 i8 Sinterpretation of the facts, and the expression thereof in your piece,
) @* A% w) m3 ]2 Y/ T! Jexplicitly or otherwise, but showing only evidence that favours your
% {9 X0 J8 _0 H3 \8 D' D eargument is hardly good science or journalism. Such an article in a journal: f. J) d; E L9 H
such as Nature is not an appropriate example of how scientific research or# `4 H7 z, Q9 Q8 F* e
reporting should be done. |
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