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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; W( m# E Y) w$ `$ D6 Y3 \% 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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It is a shame to see Nature — which nearly all scientists, including myself
- W3 O, D6 w9 T, regard as one of the most prestigious and influential physical-science6 U) U( |, Q2 x" i
magazines — publish a thinly veiled biased article like this. Granted, this
7 b% n3 a7 n v* fis not a peer-reviewed scientific article and did not go through the
: ~) J& p8 A- ?" S9 D" a3 n" Wscrutiny of picking referees. But to serve as a channel for the general1 Q- c3 e; O# c2 z
populace to be in touch with and appreciate science, the authors and editors
4 i h- |; ?( U# mshould at least present the readers with facts within the proper context,2 `3 X$ o5 m) m* e7 p; E* [7 K
which they blatantly failed to do., `9 F3 s0 F) ^- j/ G1 ?
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First, to identify Ye’s performance increase, Ewen Callaway compared her: E: u, X0 s* M* t' S: b
Olympic 400-metre IM time with her performance at the World Championships in1 B* q. Y3 b5 Q1 v
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “1 c" R+ W) q2 |- b) U' M
anomalous” improvement of around 7 seconds (6.72 s). In fact, her previous
+ s4 c5 t5 P7 a$ ~1 l S& kpersonal best was 4:33.79 at the Asian Games in 2010. This leads to an0 L. M$ {+ Q# ] |
improvement of 5.38 seconds. In a sporting event in which 0.1 s can be the
& i" B: W# d9 \1 ?3 G9 [difference between the gold and silver medal, I see no reason for 5.38 s to
: `, B, {( L# \9 h% s( Bbe treated as 7 s.5 ~0 o6 U- a5 N3 ^; G
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Second, as previously pointed out, Ye is only 16 years old and her body is
" U0 C J% L! Z; s5 E3 Z( qstill developing. Bettering oneself by 5 seconds over two years may seem
$ ^" ?9 D* q9 ?impossible for an adult swimmer, but it certainly happens among youngsters.: ?$ Q, [0 c5 c; j
An interview with Australian gold medallist Ian Thorpe revealed that his 400 P* U1 A( H9 q) }# m8 X
-metre freestyle time improved by 5 seconds between the ages of 15 and 16.
- V$ j# x: @( K4 X% r. ~For regular people, including Callaway, it may be hard to imagine what an
6 Y4 f/ i% j1 l) J3 ]: R8 Jelite swimmer can achieve as he or she matures and undergoes scientific and# v3 Y2 T* H1 B. c
persistent training. But jumping to the conclusion that it is “anomalous”; z$ w% N& J0 C$ R( m Y
based on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.
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' u2 W2 n7 D; B1 B' ]Third, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook
' h! ^5 `9 x* Z2 w% Lexample of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in
5 I7 O% ^4 H* E2 V8 \the last 50 metres, but Lochte had a huge lead in the first 300 metres, so g% F" B6 W/ a; Y& V: J! x
he chose not to push himself too hard and to conserve his energy for later
1 [4 }1 L, y" @events (whether this conforms to the Olympic spirit and the ‘use one’s8 o) c e" }' ~: j
best efforts to win a match’ requirement that the Badminton World
/ ~7 Z( M# p5 o& k7 E! uFederation recently invoked to disqualify four badminton pairs is another+ D8 p: C' B! Q% T8 y
topic worth discussing, though probably not in Nature). Ye, on the other
# G& W/ H- o+ Z( \; T& f/ @0 fhand, was trailing behind after the first 300 metres and relied on freestyle
5 f( H) d* M6 K* R, _, R1 Z# ?9 X$ Q, in which she has an edge, to win the race. Failing to mention this3 C0 K- G) X8 c
strategic difference, as well as the fact that Lochte is 23.25 seconds( r% T. {3 w& x: I) l$ D
faster (4:05.18) than Ye overall, creates the illusion that a woman swam, \8 {( T, C, g2 H/ `
faster than the best man in the same sport, which sounds impossible. Putting& [% R4 f3 H, v" I( U8 t6 H) h- _$ Y
aside the gender argument, I believe this is still a leading question that, x1 ~6 j( N2 N2 B. y
implies to the reader that there is something fishy going on.
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9 W+ [: n% s( KFourth is another example of cherry-picking. In the same event, there are
3 z: R. H9 h' F; Y4 Ifour male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93, k" k' g% O" l
s) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s8 U' H) n8 u, j) d; L F$ _2 j
), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns
: t, g% k2 R3 kout, if we are just talking about the last 50 metres in a 400-metre IM,
' o, c& Q) c1 b6 dLochter is not the example I would have used if I were the author. What kind
( K& w4 V; }& \# X: Nof scientific rigorousness is Callaway trying to demonstrate here? Is it
5 y% }" W4 E5 Alogical that if Lochter is the champion, we should assume that he leads in
$ T: U$ p! j$ Q) uevery split? That would be a terrible way to teach the public how science3 {/ y9 {3 ~) K
works.- J" R+ g( E/ b# q+ g
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Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and
, m* c( g/ \" `- l& k/ R, ^implies that a drug test cannot rule out the possibility of doping. Is this
& O& z7 z7 f2 ?* _kind of agnosticism what Nature really wants to teach its readers? By that
+ f5 ~; B' }' D/ W3 C8 ystandard, I estimate that at least half of the peer-reviewed scientific
/ C# D/ F: M) t }( Q: z" Y; upapers in Nature should be retracted. How can one convince the editors and
) d, Z: @/ c7 e. p* U0 J7 wreviewers that their proposed theory works for every possible case? One
; V# Y, Q: l' R1 U& `cannot. One chooses to apply the theory to typical examples and to9 B! {% ^2 ]* L
demonstrate that in (hopefully) all scenarios considered, the theory works
9 v& O) \) Y" f. Rto a degree, and that that should warrant publication until a counterexample
% Y7 }% \( r- w# L+ s2 M; y' n% v# ris found. I could imagine that Callaway has a sceptical mind, which is
: Y- {% q3 k/ a3 D& |2 }5 ?& _crucial to scientific thinking, but that would be put to better use if he
E& S$ U1 G2 F8 b/ I5 mwrote a peer-reviewed paper that discussed the odds of Ye doping on a highly
, F S! t, u* V& ~advanced, non-detectable drug that the Chinese have come up with in the: ^ X3 X# E3 ^; c- Y9 l
past 4 years (they obviously did not have it in Beijing, otherwise why not
; H8 z4 J4 I5 x: F2 Kuse it and woo the audience at home?), based on data and rational derivation
- w& c6 F5 S/ F4 E. This article, however, can be interpreted as saying that all athletes are9 H" d; S' |# H" f, w- k( W* O" m
doping and the authorities are just not good enough to catch them. That may( g& b0 J% k/ P, {; z- \; i
be true, logically, but definitely will not make the case if there is ever a- w) v- @/ W0 i) l- i: m% y
hearing by the governing body for water sports, FINA, to determine if Ye3 `& T( b. ^ i& s) y/ h
has doped. To ask whether it is possible to obtain a false negative in a
5 V9 A: @7 \( Bdrug test looks like a rigged question to me. Of course it is possible: @$ S1 j/ y. h/ x. L9 e( |
other than the athlete taking a drug that the test is not designed to detect5 H/ E+ ^. q4 }% y) q" s
, anyone who has taken quantum 101 will tell you that everything is( k7 _7 z" @9 c: s2 e
probabilistic in nature, and so there is a probability that the drug in an- d0 J* q! M$ v
athlete’s system could tunnel out right at the moment of the test. A slight
, b: N& r" _4 K' Zchance it may be, but should we disregard all test results because of it?" C: o6 C+ K0 b2 _+ {
Let’s be practical and reasonable, and accept that the World Anti-Doping
: @! e% |% u! D0 [8 G: {agency (WADA) is competent at its job. Ye’s urine sample will be stored for7 V1 S, o% A3 X6 `# ?
eight years after the contest for future testing as technology advances.3 Y8 M( z" ~: b( q2 U
Innocent until proven guilty, shouldn’t it be?* @0 [" Z5 P5 q" d* m# k9 |' _
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Sixth, and the last point I would like to make, is that the out-of-
6 A( h! }' r' v, p/ `* tcompetition drug test is already in effect, which Callaway failed to mention4 @4 O3 L, {, a7 c
. As noted in the president of WADA’s press release, drug testing for
! M, a/ U1 B2 g; ~& z2 g7 }8 bOlympians began at least six months before the opening of the London
7 d3 {$ F; W7 u. HOlympics. Furthermore, 107 athletes have been banned from this Olympics for
7 e9 _ Y$ a0 X1 Xdoping. That may be the reason that “everyone will pass at the Olympic- c6 J- N( k ~9 M2 p
games. Hardly anyone fails in competition testing” — those who did dope
$ h! Z9 ~, i5 M1 x ~3 Q2 X" [have already been caught and sanctioned. Callaway is free to suggest that a( s3 M9 e# B1 V+ R% [
player could have doped beforehand and fooled the test at the game, but this/ L$ k4 X# F& W! ?" |
possibility is certainly ruled out for Ye.
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Over all, even though Callaway did not falsify any data, he did (7 M8 ]- n5 u" f. d2 x
intentionally or not) cherry-pick data that, in my view, are far too
3 ]$ h" l5 o0 J0 K6 t8 ?8 osuggestive to be fair and unbiased. If you want to cover a story of a
; d" [% s6 G4 J9 \+ e6 lsuspected doping from a scientific point of view, be impartial and provide; I% X T) p/ h, `
all the facts for the reader to judge. You are entitled to your
2 A- L( Z2 }; x. r+ Minterpretation of the facts, and the expression thereof in your piece,
. g% e* J" U2 ^9 ^ K* @) z1 [$ ~explicitly or otherwise, but showing only evidence that favours your
: v3 ?) d; q& k7 K: w8 margument is hardly good science or journalism. Such an article in a journal
# x, X+ x, t- t0 d- Zsuch as Nature is not an appropriate example of how scientific research or T6 ]3 G6 Y3 e2 }8 @
reporting should be done. |
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