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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 JIANG8 y) G, v2 q- g( Y$ m3 A T3 `
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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( M M% w8 G5 shttp://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html9 S, Y8 o; r0 q+ \5 C. s
4 G3 P/ k$ ~) c* tFROM LAI JIANG, Department of Chemistry, University of Pennsylvania6 s& g: ]' z" B$ h- j
# G+ e2 E5 i V; l( [7 G& b4 m; qIt is a shame to see Nature — which nearly all scientists, including myself
& v" Q. Q9 ?% m& m" e, regard as one of the most prestigious and influential physical-science w; W5 O$ s' \, U3 {6 m
magazines — publish a thinly veiled biased article like this. Granted, this9 V; }. M) y& x% {, C
is not a peer-reviewed scientific article and did not go through the
. V2 a& ?5 t% _) c5 h# Nscrutiny of picking referees. But to serve as a channel for the general& @7 M! O# S3 }4 T7 H
populace to be in touch with and appreciate science, the authors and editors5 w' `. I5 R5 g" _5 y" }
should at least present the readers with facts within the proper context,/ z4 B H/ Q0 a( E) A" _
which they blatantly failed to do.5 O, c4 ^9 K. `% H) q9 z
% B8 ~& K- L/ T' Q5 e) qFirst, to identify Ye’s performance increase, Ewen Callaway compared her
* O6 b9 _1 D0 V% UOlympic 400-metre IM time with her performance at the World Championships in, p6 y9 s9 ~! w; U. n
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “; X& R, d$ y# ^/ V8 D9 a
anomalous” improvement of around 7 seconds (6.72 s). In fact, her previous; a5 |* |* h+ M: \- {
personal best was 4:33.79 at the Asian Games in 2010. This leads to an2 s0 q" j* ^- r
improvement of 5.38 seconds. In a sporting event in which 0.1 s can be the& u8 q5 q% v* }2 R# [
difference between the gold and silver medal, I see no reason for 5.38 s to
H' L+ N* Q& `8 Ube treated as 7 s.
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Second, as previously pointed out, Ye is only 16 years old and her body is
% d- {' o5 Z5 H: nstill developing. Bettering oneself by 5 seconds over two years may seem7 ?1 T- m' P9 }
impossible for an adult swimmer, but it certainly happens among youngsters.
% A4 O9 g( ^6 L' `, s7 p! J7 vAn interview with Australian gold medallist Ian Thorpe revealed that his 400
9 C# t( u' f' V% U: H-metre freestyle time improved by 5 seconds between the ages of 15 and 16.
; a e" ^" \9 P! k1 [: oFor regular people, including Callaway, it may be hard to imagine what an* v3 t1 @2 m8 H/ }
elite swimmer can achieve as he or she matures and undergoes scientific and
9 ^: a7 R7 m0 V, \' Lpersistent training. But jumping to the conclusion that it is “anomalous”
$ F- X9 J! O# G1 jbased on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.
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Third, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook
: Y/ c8 r2 N8 Oexample of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in( P& ]9 f, f2 ~/ l8 i
the last 50 metres, but Lochte had a huge lead in the first 300 metres, so* d" g; i9 K; i% h7 L/ }
he chose not to push himself too hard and to conserve his energy for later) o- Q3 ?9 l7 X6 ]% f9 C2 j) I" X
events (whether this conforms to the Olympic spirit and the ‘use one’s
9 {# \- q2 ?3 H& V, Q; fbest efforts to win a match’ requirement that the Badminton World' B# H6 E, Q4 G2 k0 {, z) N
Federation recently invoked to disqualify four badminton pairs is another+ U' g2 n: G; D! c+ |* k0 N: J
topic worth discussing, though probably not in Nature). Ye, on the other
6 V$ k+ ^7 W( S6 w$ Q9 R4 khand, was trailing behind after the first 300 metres and relied on freestyle
* B4 B, |% d7 e* O, z1 p, in which she has an edge, to win the race. Failing to mention this
+ O' d. z$ }. Jstrategic difference, as well as the fact that Lochte is 23.25 seconds
/ c' a( h, Z5 ]+ A6 Vfaster (4:05.18) than Ye overall, creates the illusion that a woman swam/ ?# q0 J" E& F x& l7 H K1 V
faster than the best man in the same sport, which sounds impossible. Putting" K2 G5 m7 \" I, ^
aside the gender argument, I believe this is still a leading question that
* {; S+ q0 s2 J" L& R7 Q. |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" Z% d2 Z* I9 c
four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93% j( ?+ ~+ A5 q' S
s) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s
& G+ J1 q' |+ X8 V( ~* F), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns+ |& E, F% S' u5 j$ q- i% i+ G: g
out, if we are just talking about the last 50 metres in a 400-metre IM,2 K) X# X/ n3 T- Q! q7 l# Y! r
Lochter is not the example I would have used if I were the author. What kind
4 ~$ U* g6 M* Zof scientific rigorousness is Callaway trying to demonstrate here? Is it
( j2 N4 R& d# ~6 z8 g0 h0 d0 ulogical that if Lochter is the champion, we should assume that he leads in% f0 D+ f: y; n
every split? That would be a terrible way to teach the public how science- _/ X) H0 _# l2 H. t ?
works.
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Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and
; J, H/ u; n3 Dimplies that a drug test cannot rule out the possibility of doping. Is this8 X7 {* x3 J( ?2 X
kind of agnosticism what Nature really wants to teach its readers? By that5 q! O! R0 N3 [& X
standard, I estimate that at least half of the peer-reviewed scientific
7 b- R b% @$ j+ ]papers in Nature should be retracted. How can one convince the editors and
z7 U& g. N5 \" t3 A% n' W9 n/ p+ m3 Wreviewers that their proposed theory works for every possible case? One
}! k) ~1 q: s9 J A, X# ]cannot. One chooses to apply the theory to typical examples and to
" [/ L( D9 l( r4 ~2 ? Kdemonstrate that in (hopefully) all scenarios considered, the theory works7 ], a! n( w+ p4 N2 b r8 ]/ F# F
to a degree, and that that should warrant publication until a counterexample2 _4 _9 r2 d3 R- e1 M: W3 k. l
is found. I could imagine that Callaway has a sceptical mind, which is
+ i+ A% `2 t8 S1 R, q5 Ncrucial to scientific thinking, but that would be put to better use if he
& A- C( z' Y$ M0 \$ wwrote a peer-reviewed paper that discussed the odds of Ye doping on a highly! ^, ~# q. }- P# B1 @
advanced, non-detectable drug that the Chinese have come up with in the) J; _( L2 H% Z4 D/ ^; Y$ s, ]
past 4 years (they obviously did not have it in Beijing, otherwise why not+ i. c+ \6 ^& c8 ?& M
use it and woo the audience at home?), based on data and rational derivation% W! R* g9 H0 f3 T7 P
. This article, however, can be interpreted as saying that all athletes are
: @& l; X5 t. Y6 a3 m, Tdoping and the authorities are just not good enough to catch them. That may
, Y( f' ~7 g9 l9 L9 r8 f$ z- Pbe true, logically, but definitely will not make the case if there is ever a# X# L0 U# h/ c( _6 G, {
hearing by the governing body for water sports, FINA, to determine if Ye) y( X9 O. W# W- D z2 W
has doped. To ask whether it is possible to obtain a false negative in a2 C7 a2 }% m; s0 t: \
drug test looks like a rigged question to me. Of course it is possible:
, g% G7 s: W! D& @- Jother than the athlete taking a drug that the test is not designed to detect
# h/ ?+ v# Y% M: A1 @1 q, anyone who has taken quantum 101 will tell you that everything is2 m4 O4 S4 Z4 R$ j R" L( F
probabilistic in nature, and so there is a probability that the drug in an
* {7 A- Y# J" [3 yathlete’s system could tunnel out right at the moment of the test. A slight' R) a" i) Y* T# A& J
chance it may be, but should we disregard all test results because of it?
- I! f* Q: O1 f% z+ t, O$ eLet’s be practical and reasonable, and accept that the World Anti-Doping
+ n6 g$ w& }: T; x6 |agency (WADA) is competent at its job. Ye’s urine sample will be stored for1 Y2 ]) U; l% Q: q+ P6 N. r% v
eight years after the contest for future testing as technology advances.' M' _# R0 e; I. r0 E6 K
Innocent 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-
, g6 B5 R" M/ zcompetition drug test is already in effect, which Callaway failed to mention+ j+ Z/ T7 j8 a6 j I/ V& n
. As noted in the president of WADA’s press release, drug testing for- v t& K- T0 T6 R
Olympians began at least six months before the opening of the London
1 K! m/ @, `% ~3 |5 H/ |Olympics. Furthermore, 107 athletes have been banned from this Olympics for. k, x1 k" j l: S8 L6 ~. x
doping. That may be the reason that “everyone will pass at the Olympic# H& I( e+ j- k, q- K5 v# q! m
games. Hardly anyone fails in competition testing” — those who did dope( y: _7 S, U% R0 Y: K F0 _
have already been caught and sanctioned. Callaway is free to suggest that a; i, c" g( F+ {& ^' k. F/ S4 \. ~8 O
player could have doped beforehand and fooled the test at the game, but this
: n0 | r" p7 {7 X }, F: ^possibility is certainly ruled out for Ye./ k- D0 ^3 v/ b$ r
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Over all, even though Callaway did not falsify any data, he did (# @" d) P% r- Y; w4 S
intentionally or not) cherry-pick data that, in my view, are far too
: K+ v3 B4 }5 F5 G' _4 s2 Psuggestive to be fair and unbiased. If you want to cover a story of a, L4 @- h0 R. W, p' m# e
suspected doping from a scientific point of view, be impartial and provide. O0 [) H+ m, n, I1 W5 c6 A
all the facts for the reader to judge. You are entitled to your, @2 x* s+ \3 i/ z
interpretation of the facts, and the expression thereof in your piece,
$ d4 |4 [3 Q- eexplicitly or otherwise, but showing only evidence that favours your
9 R( x4 T& j/ b* Gargument is hardly good science or journalism. Such an article in a journal2 |) }; E2 v( S0 |4 J5 G
such as Nature is not an appropriate example of how scientific research or% |& L0 n; x* v' g$ A4 f) s& @# S
reporting should be done. |
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