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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! J0 ^7 a' P. f8 ?9 [ ~
如果是中国长大的,英语能到这种程度真是很不简单。3 s! a) ^/ h) R+ P! @. s) J
& l! L( U# k. j8 f) Phttp://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html3 I8 u6 M% y* v/ T/ j$ P
! K- h) j/ j* k! N- FFROM 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* M9 Z j6 d2 F2 i& ^
, regard as one of the most prestigious and influential physical-science
1 T4 ^ [, {4 r5 V. p0 v3 k+ Hmagazines — publish a thinly veiled biased article like this. Granted, this
5 O, ^6 t8 o# Fis not a peer-reviewed scientific article and did not go through the
# r; n8 s4 S% }scrutiny of picking referees. But to serve as a channel for the general
( N# N% J! V9 `# f, Lpopulace to be in touch with and appreciate science, the authors and editors
3 G0 ~8 Q$ c) S Cshould at least present the readers with facts within the proper context,
% P0 }& H* w/ l. z/ ywhich they blatantly failed to do.
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First, to identify Ye’s performance increase, Ewen Callaway compared her
8 u" q: g1 d$ _( A& yOlympic 400-metre IM time with her performance at the World Championships in
0 r% W* b! ]4 n5 s+ t+ `7 h2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “5 {4 u( F P) d7 A
anomalous” improvement of around 7 seconds (6.72 s). In fact, her previous5 q0 A. ?; V+ L3 x
personal best was 4:33.79 at the Asian Games in 2010. This leads to an
/ |3 z( r+ S0 E4 l2 cimprovement of 5.38 seconds. In a sporting event in which 0.1 s can be the
, [& l; P8 D$ o& mdifference between the gold and silver medal, I see no reason for 5.38 s to% k G) u) k, X! J) \5 {6 b9 M+ n
be treated as 7 s.
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3 j7 {, q( C: ^/ K/ t( j: sSecond, as previously pointed out, Ye is only 16 years old and her body is- S' [" \9 Y8 B& M* E: Q% ]
still developing. Bettering oneself by 5 seconds over two years may seem
2 x+ l% x3 _6 s' E" r/ J4 }impossible for an adult swimmer, but it certainly happens among youngsters.' U9 ?- K) c! M
An interview with Australian gold medallist Ian Thorpe revealed that his 4003 e% @5 F, i- ?0 V2 P" H6 d1 l% j8 o
-metre freestyle time improved by 5 seconds between the ages of 15 and 16.
* Y; A, f. z; N% X1 b {/ @, z6 wFor regular people, including Callaway, it may be hard to imagine what an+ c! y* R1 c. u0 W" ]# X
elite swimmer can achieve as he or she matures and undergoes scientific and2 a, q2 I+ ?2 Q1 Q9 o( a! b
persistent training. But jumping to the conclusion that it is “anomalous”
& q# M; K1 r8 q' b( r6 ibased on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.6 _7 ?( \1 ]5 ]% X" ^5 b
' n% J7 @4 a; R6 B! c# }
Third, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook
" h, s8 G6 F4 r! Aexample of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in
8 O7 U9 K5 V; j2 Z$ I/ f. A4 a2 bthe last 50 metres, but Lochte had a huge lead in the first 300 metres, so' r; u L8 B6 e% O6 o5 f2 p) `
he chose not to push himself too hard and to conserve his energy for later
% V5 \2 y3 N( E, z9 l% C' \events (whether this conforms to the Olympic spirit and the ‘use one’s; T( L1 K) `0 L: j9 I, m. ^
best efforts to win a match’ requirement that the Badminton World% }' j, u+ ~( A* @
Federation recently invoked to disqualify four badminton pairs is another
7 ?2 n; L6 P' B$ Vtopic worth discussing, though probably not in Nature). Ye, on the other$ \$ ^( |8 v9 ^! }6 h' K
hand, was trailing behind after the first 300 metres and relied on freestyle* k8 M$ j5 G& [, a- a. i4 t( i
, in which she has an edge, to win the race. Failing to mention this
# h' W, w8 m+ m2 y$ m4 u8 }strategic difference, as well as the fact that Lochte is 23.25 seconds0 u" t2 ~& n) m5 {8 q- \
faster (4:05.18) than Ye overall, creates the illusion that a woman swam1 \' X8 i- Z$ r
faster than the best man in the same sport, which sounds impossible. Putting
. J8 G1 ~2 ~% K. e# Z8 Waside the gender argument, I believe this is still a leading question that9 z( Z6 y) n* A# k) }
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 are
4 Z; r" U" u1 W% pfour male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93" S i' X0 w/ y! Q
s) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s" \8 i \* U$ W5 G7 R% x, v' L
), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns. |7 s- @, _) P+ h) E7 q3 I+ a
out, if we are just talking about the last 50 metres in a 400-metre IM,' O1 c$ @$ v9 Z |
Lochter is not the example I would have used if I were the author. What kind
) D! e. h1 O- G( C: W% W [- }; f ?of scientific rigorousness is Callaway trying to demonstrate here? Is it
4 f* J- a1 o( M, clogical that if Lochter is the champion, we should assume that he leads in9 h$ W2 m, a9 |% J6 B
every split? That would be a terrible way to teach the public how science
+ D" w$ A6 V! n7 Nworks.
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6 B3 h$ v& s) d: N4 HFifth is the issue I oppose the most. Callaway quotes Ross Tucker and5 j z# b% e) [$ j6 ^
implies that a drug test cannot rule out the possibility of doping. Is this
% s3 n" g( U/ P1 A1 C" v/ T- wkind of agnosticism what Nature really wants to teach its readers? By that+ K6 `- E3 f' R) _2 M0 W. k' \
standard, I estimate that at least half of the peer-reviewed scientific2 k4 k9 ^# I; T0 T
papers in Nature should be retracted. How can one convince the editors and3 E+ j" G! v' m6 Y9 v
reviewers that their proposed theory works for every possible case? One
) n% f6 \. Z7 @+ M+ N1 @2 \8 K5 x2 Ecannot. One chooses to apply the theory to typical examples and to* e5 ^- P. Q$ u$ G
demonstrate that in (hopefully) all scenarios considered, the theory works5 E6 I# s- p2 y4 }) Z
to a degree, and that that should warrant publication until a counterexample& h/ p; x7 d6 I
is found. I could imagine that Callaway has a sceptical mind, which is* u( U( U# W* t1 Q- U. N4 \
crucial to scientific thinking, but that would be put to better use if he4 ?/ T0 x0 t/ _
wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly/ r1 K6 Y4 O" F. c
advanced, non-detectable drug that the Chinese have come up with in the
: \* F1 [5 H; Gpast 4 years (they obviously did not have it in Beijing, otherwise why not2 n9 b! w s' G/ ]7 A
use it and woo the audience at home?), based on data and rational derivation0 i9 \; }+ G* a$ v! ~ n4 D1 \4 w
. This article, however, can be interpreted as saying that all athletes are& O, s, o: G( c4 b+ Y
doping and the authorities are just not good enough to catch them. That may6 ]+ P( @* g: M0 X
be true, logically, but definitely will not make the case if there is ever a
; w. b/ p4 B1 ~+ \hearing by the governing body for water sports, FINA, to determine if Ye
" j' E, ~2 I- X. o; k1 U' i/ ]has doped. To ask whether it is possible to obtain a false negative in a. N3 b% X+ ?6 v7 H3 z
drug test looks like a rigged question to me. Of course it is possible:& A4 U2 @1 J6 X6 \# h1 ~
other than the athlete taking a drug that the test is not designed to detect+ Q2 c* ~1 i k9 G" e; t4 X; J; h
, anyone who has taken quantum 101 will tell you that everything is. i( [0 I( J9 J9 r
probabilistic in nature, and so there is a probability that the drug in an; y7 i9 X' q0 a% m, L
athlete’s system could tunnel out right at the moment of the test. A slight% D; k' d' [5 v1 z
chance it may be, but should we disregard all test results because of it?
* c) X% v) a% z/ uLet’s be practical and reasonable, and accept that the World Anti-Doping* v$ p$ z; ~2 h6 G/ A9 S
agency (WADA) is competent at its job. Ye’s urine sample will be stored for
6 d5 l2 O/ A) U. ?$ d$ Peight years after the contest for future testing as technology advances.
1 S8 K8 n L& b3 o/ }+ HInnocent 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-
2 T4 Y2 _' y0 ~, Q2 ^6 ycompetition drug test is already in effect, which Callaway failed to mention
4 ^- N' O1 U. L9 X+ Z2 T: K" r! t1 Q. As noted in the president of WADA’s press release, drug testing for) y- v8 R' ]) v4 y
Olympians began at least six months before the opening of the London
. f9 b- x( t$ D$ h% O6 kOlympics. Furthermore, 107 athletes have been banned from this Olympics for
& Z2 n9 p0 ^& z) `doping. That may be the reason that “everyone will pass at the Olympic
9 `- x1 ?( F' A I b; W8 d) lgames. Hardly anyone fails in competition testing” — those who did dope+ p% s) u+ L" g! N; [$ l
have already been caught and sanctioned. Callaway is free to suggest that a
6 H- a2 _9 V9 ?% v" G2 {player could have doped beforehand and fooled the test at the game, but this
. G* R0 c( ^# S) A( C F I t- q6 Ipossibility is certainly ruled out for Ye.8 _6 j. t+ J, B' b' Y# g
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Over all, even though Callaway did not falsify any data, he did (
( ]' t+ p( D' \' C" O ~: w: Q2 pintentionally or not) cherry-pick data that, in my view, are far too- G3 H1 p8 b2 k% C# U* V( k/ k
suggestive to be fair and unbiased. If you want to cover a story of a
7 {5 K, t8 y. P# F- d6 H# m, Q7 G! wsuspected doping from a scientific point of view, be impartial and provide V6 s+ T* E- c0 N) D5 u" h$ c3 T
all the facts for the reader to judge. You are entitled to your; ~3 i1 O& k$ h k
interpretation of the facts, and the expression thereof in your piece,/ N! r+ G, G% E; D
explicitly or otherwise, but showing only evidence that favours your
! P+ o# H+ O5 k! F7 m I: \' [5 Fargument is hardly good science or journalism. Such an article in a journal2 Z& {7 J$ E7 K0 f* U
such as Nature is not an appropriate example of how scientific research or
) c8 E6 M9 P9 a6 l" D- Kreporting should be done. |
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