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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 JIANG0 S* t# b# H D( k. y6 b
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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1 T' p& G0 h/ {: K% j# ^! Chttp://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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! N) v# r% }& v2 ~; nIt is a shame to see Nature — which nearly all scientists, including myself s8 A; q9 L5 j# O
, regard as one of the most prestigious and influential physical-science" W. H% H* G" q! T
magazines — publish a thinly veiled biased article like this. Granted, this
! k( h& X# ^/ O0 V7 T% uis not a peer-reviewed scientific article and did not go through the
% B( v; g1 S- E; k1 w% Uscrutiny of picking referees. But to serve as a channel for the general
0 S! \ S. e0 [populace to be in touch with and appreciate science, the authors and editors9 \. \5 i; Z7 `9 m5 {0 |" x% Y
should at least present the readers with facts within the proper context,
, M! e* w0 q% k% c, [8 qwhich they blatantly failed to do., B K7 f9 {# P c1 \1 n9 r
) ~2 B, w i* { j; T n. L) R3 @First, to identify Ye’s performance increase, Ewen Callaway compared her8 p% @6 C: g: w& ]
Olympic 400-metre IM time with her performance at the World Championships in4 X( A1 I' Z, L$ o6 U
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “
5 u, y/ r) a* m* Z) K X& Lanomalous” improvement of around 7 seconds (6.72 s). In fact, her previous" z6 i; e! }( B1 G% p% z9 f9 @
personal best was 4:33.79 at the Asian Games in 2010. This leads to an
) D/ O# ~# H4 l/ ?improvement of 5.38 seconds. In a sporting event in which 0.1 s can be the
$ B" s+ ?+ ?+ Odifference between the gold and silver medal, I see no reason for 5.38 s to
* S6 l$ A( f- X% k- Abe treated as 7 s.8 A0 C+ |! t5 |' j
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Second, as previously pointed out, Ye is only 16 years old and her body is) N3 M' \" d! R
still developing. Bettering oneself by 5 seconds over two years may seem& V Z8 Y9 n- ]) \4 }( L! o
impossible for an adult swimmer, but it certainly happens among youngsters.8 S- \+ ]" Y% ~1 B2 q, @# C' z, \
An interview with Australian gold medallist Ian Thorpe revealed that his 400
9 I; i6 z# O* ^" _5 l-metre freestyle time improved by 5 seconds between the ages of 15 and 16.
0 E N( o/ V$ C) c- R' ]For regular people, including Callaway, it may be hard to imagine what an
/ i9 j( [5 e: _& L1 _elite swimmer can achieve as he or she matures and undergoes scientific and
: y& \! B# c; U6 xpersistent training. But jumping to the conclusion that it is “anomalous”
" O' U' t4 m8 H4 l5 ]based on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.7 `% m2 E5 D8 V& [
9 D: g! ]* M4 \Third, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook" @! y8 c) `5 t& R
example of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in
5 w) P# {4 X5 \$ U5 [* r, jthe last 50 metres, but Lochte had a huge lead in the first 300 metres, so
4 q* H' y" \) g1 ]2 the chose not to push himself too hard and to conserve his energy for later
2 g% l- b6 D$ i2 Cevents (whether this conforms to the Olympic spirit and the ‘use one’s" F0 h/ X' O: L
best efforts to win a match’ requirement that the Badminton World5 A8 @0 e7 g9 I
Federation recently invoked to disqualify four badminton pairs is another) t( E5 G* y5 V+ @- T4 q
topic worth discussing, though probably not in Nature). Ye, on the other0 E" B( n0 f9 O& s
hand, was trailing behind after the first 300 metres and relied on freestyle
' K* l% J$ e( C8 i# `/ K" H, in which she has an edge, to win the race. Failing to mention this8 {# C* V" s$ W+ E1 K
strategic difference, as well as the fact that Lochte is 23.25 seconds/ S% F/ u' `$ K9 [
faster (4:05.18) than Ye overall, creates the illusion that a woman swam4 g7 b6 i/ j, B: l$ u
faster than the best man in the same sport, which sounds impossible. Putting
, _. l+ m5 U% K8 b4 T5 C4 {3 yaside the gender argument, I believe this is still a leading question that
! w# G3 ~7 |, ], q% w& ?implies to the reader that there is something fishy going on.5 v& e5 l3 N7 _$ Q+ E* }" W0 h, w7 }
& _2 V9 x0 `) {" dFourth is another example of cherry-picking. In the same event, there are
0 Z. N# F6 `; ifour male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93
- M& ]$ K' y- os) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s* K9 G0 B6 c" i6 M. B) S
), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns3 N. K. A! ~% h7 ]9 e9 h
out, if we are just talking about the last 50 metres in a 400-metre IM,$ W7 q# s, L0 E) m# q/ H
Lochter is not the example I would have used if I were the author. What kind- ^0 \6 k- s& M2 G
of scientific rigorousness is Callaway trying to demonstrate here? Is it/ F5 J, j4 L1 w. f3 }0 m' Z
logical that if Lochter is the champion, we should assume that he leads in) K2 @+ {0 D' g) l9 ]* w
every split? That would be a terrible way to teach the public how science
' ?4 R* A& h+ M+ Wworks.1 ]: B- N" E- B; `5 J0 G. W2 ^
' J0 K, W5 N* G5 i0 O; oFifth is the issue I oppose the most. Callaway quotes Ross Tucker and, I0 P4 @, J8 R' c& t) ~
implies that a drug test cannot rule out the possibility of doping. Is this w1 u. {: U, u, u$ b
kind of agnosticism what Nature really wants to teach its readers? By that
" H/ {. B" ?/ H/ ?standard, I estimate that at least half of the peer-reviewed scientific
2 M) X, U% d+ T) m/ j; F! @2 Z3 [papers in Nature should be retracted. How can one convince the editors and& m9 l: |) i: c
reviewers that their proposed theory works for every possible case? One
1 t0 F- v+ J) u/ Rcannot. One chooses to apply the theory to typical examples and to6 X3 {7 O* h+ e& D; y
demonstrate that in (hopefully) all scenarios considered, the theory works) L: X4 T3 `3 W8 I. y( Z H
to a degree, and that that should warrant publication until a counterexample( Z' m6 F" i# I# H `9 r: \, p7 N/ ?
is found. I could imagine that Callaway has a sceptical mind, which is1 [0 Y0 q: A. G+ q$ i
crucial to scientific thinking, but that would be put to better use if he" j. _' Y. e+ b% O
wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly
; K$ }1 T, [1 h7 G1 Eadvanced, non-detectable drug that the Chinese have come up with in the
4 z6 r- E( \' |2 Hpast 4 years (they obviously did not have it in Beijing, otherwise why not
: l; P8 t( Z( F1 b: e' i' puse it and woo the audience at home?), based on data and rational derivation5 {; r9 M% a# ~4 L, \8 \: P
. This article, however, can be interpreted as saying that all athletes are. w* U) Y, z4 m* I7 h, K
doping and the authorities are just not good enough to catch them. That may8 }8 G3 o7 W# f5 @1 U. \
be true, logically, but definitely will not make the case if there is ever a% S( {5 I4 G' v4 a- s U* v
hearing by the governing body for water sports, FINA, to determine if Ye3 ]9 l8 [, K3 R) R2 W$ y
has doped. To ask whether it is possible to obtain a false negative in a# T. b" l: ?' Y) Z* ]" C$ R
drug test looks like a rigged question to me. Of course it is possible:% y( i+ j& b2 i0 Q( @$ R
other than the athlete taking a drug that the test is not designed to detect
4 {5 X k/ D8 u+ P, anyone who has taken quantum 101 will tell you that everything is0 W; C: ~7 @8 ?
probabilistic in nature, and so there is a probability that the drug in an
8 e; |5 k" y+ p; d+ Sathlete’s system could tunnel out right at the moment of the test. A slight
) Z ^. n7 R1 a- h+ E' W! o' F& fchance it may be, but should we disregard all test results because of it?+ I2 |! ~5 B+ a2 R. t1 V& P" V9 ]0 o
Let’s be practical and reasonable, and accept that the World Anti-Doping3 L+ J% k1 F. H+ l' E
agency (WADA) is competent at its job. Ye’s urine sample will be stored for: G! x1 R) z% m: a+ `# }
eight years after the contest for future testing as technology advances.$ M: w, R0 ?8 I6 t/ A, s! O7 m- M
Innocent until proven guilty, shouldn’t it be?; q2 \4 p0 S, Y
4 n% l2 a- K& H8 }! ZSixth, and the last point I would like to make, is that the out-of-
1 g. m) [4 B6 o! G5 E4 ccompetition drug test is already in effect, which Callaway failed to mention) D- g8 u. O; j& ]9 A! L" B; l! l8 h
. As noted in the president of WADA’s press release, drug testing for! V6 H7 B1 y; r$ E) {$ C/ K
Olympians began at least six months before the opening of the London
# n4 P& G+ |- q7 C/ k: |, T! c tOlympics. Furthermore, 107 athletes have been banned from this Olympics for9 W' }3 C; l( o. V9 N+ @) q3 v
doping. That may be the reason that “everyone will pass at the Olympic
$ A& E6 d% \; E& k- `, fgames. Hardly anyone fails in competition testing” — those who did dope
* l4 j% {3 E' ghave already been caught and sanctioned. Callaway is free to suggest that a
! x- j( O C/ K: rplayer could have doped beforehand and fooled the test at the game, but this9 G8 V6 W2 B2 F; ~
possibility is certainly ruled out for Ye.2 K- F" g. P7 Q4 e
; w/ L- l9 B$ [5 t( S* [* ]# {Over all, even though Callaway did not falsify any data, he did (2 \5 V# M9 Y" l2 f* C
intentionally or not) cherry-pick data that, in my view, are far too
& t5 J1 g, t/ P7 {2 a2 \suggestive to be fair and unbiased. If you want to cover a story of a9 A" L' m; g5 J' M
suspected doping from a scientific point of view, be impartial and provide. w B! s4 k3 X7 t- E* T
all the facts for the reader to judge. You are entitled to your7 L9 v: |4 M( d9 @0 k1 z/ C
interpretation of the facts, and the expression thereof in your piece,
$ @ ?0 }; f1 ~! M. oexplicitly or otherwise, but showing only evidence that favours your
8 Y; Y, j1 J2 b! {. e4 L, A. k ^argument is hardly good science or journalism. Such an article in a journal
* ^3 z$ T& _! @% t# W& a: H2 tsuch as Nature is not an appropriate example of how scientific research or
3 w9 W& s2 k, I5 r6 a9 }$ Dreporting should be done. |
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