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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) l/ H- [1 c' z9 ~
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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3 C8 q, Y7 z3 @http://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html3 r7 S# }- h9 Y8 R
- j3 ]! D& s/ k. b' s( f$ D+ z; ]FROM LAI JIANG, Department of Chemistry, University of Pennsylvania0 X) t, T$ z" f' F
0 @$ j6 |) N6 |4 K4 qIt is a shame to see Nature — which nearly all scientists, including myself
! Q) M0 H* j. W3 s, regard as one of the most prestigious and influential physical-science
5 S1 E- M6 P$ M3 t0 N( {magazines — publish a thinly veiled biased article like this. Granted, this
3 n& g A L2 N2 O# r* ?4 P9 x# u9 `is not a peer-reviewed scientific article and did not go through the
: F* `' v( r6 J1 W$ a! Y. Fscrutiny of picking referees. But to serve as a channel for the general% M3 v: A* r- W1 c, i2 c/ C2 E
populace to be in touch with and appreciate science, the authors and editors. D7 o1 b! x4 j( `6 O
should at least present the readers with facts within the proper context,
& U& M% I! A, B# Twhich they blatantly failed to do.9 J+ G: L0 q! {3 e/ S- K7 j
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First, to identify Ye’s performance increase, Ewen Callaway compared her
% }" a8 K: d( j9 e" Z2 X1 r. WOlympic 400-metre IM time with her performance at the World Championships in
. `- H+ X4 p5 @8 q1 @4 Z2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “
; l5 h6 V" l3 h6 Banomalous” improvement of around 7 seconds (6.72 s). In fact, her previous
8 U3 D: y5 y( ^personal best was 4:33.79 at the Asian Games in 2010. This leads to an
' N* b; q2 f h9 timprovement of 5.38 seconds. In a sporting event in which 0.1 s can be the
# ]+ X8 K) [7 k: b5 H4 ddifference between the gold and silver medal, I see no reason for 5.38 s to" H% ]1 Y% R; D8 ~/ ]$ b# A
be treated as 7 s.
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" j# M; g% s* }: W0 l4 sSecond, as previously pointed out, Ye is only 16 years old and her body is
- c! d6 p X6 M$ f1 c' lstill developing. Bettering oneself by 5 seconds over two years may seem) o' Y; K0 p9 _; A% Q$ R
impossible for an adult swimmer, but it certainly happens among youngsters.
% j; c& f" m5 @9 e+ xAn interview with Australian gold medallist Ian Thorpe revealed that his 400: \5 k+ ^! G% m9 E" t5 ?/ q
-metre freestyle time improved by 5 seconds between the ages of 15 and 16.5 K+ o3 f9 Q8 ^7 g3 [, t& [) O" i
For regular people, including Callaway, it may be hard to imagine what an
& U' C2 z: B% _% T* m9 d4 Aelite swimmer can achieve as he or she matures and undergoes scientific and; d8 Z' a3 b) K7 Z |
persistent training. But jumping to the conclusion that it is “anomalous”
% [" P6 E) I" Z m: P+ B$ [6 dbased on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.
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0 H: i9 @4 Z$ x3 P" m, P9 yThird, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook. N. B: ] p+ E4 k8 c) {* n
example of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in/ q$ A2 d. e$ m! R. D C7 q3 `7 {/ ?) w
the last 50 metres, but Lochte had a huge lead in the first 300 metres, so7 Y! m5 y2 d) T7 _; [
he chose not to push himself too hard and to conserve his energy for later
: z1 O3 Q* Z. H z. jevents (whether this conforms to the Olympic spirit and the ‘use one’s% A, C# m* s5 L) m% W, G- `: n
best efforts to win a match’ requirement that the Badminton World# y3 f; i2 Z2 F6 c: Z9 A9 z0 A
Federation recently invoked to disqualify four badminton pairs is another, U6 o. V3 k1 g; S0 U2 `/ g2 {5 s
topic worth discussing, though probably not in Nature). Ye, on the other6 A/ }* \ l+ W( U9 [/ G
hand, was trailing behind after the first 300 metres and relied on freestyle
4 a. l0 n8 E! e, in which she has an edge, to win the race. Failing to mention this
: L8 _. O; _8 B9 j' tstrategic difference, as well as the fact that Lochte is 23.25 seconds4 N0 `+ J# I( M, r& y& \! }1 `
faster (4:05.18) than Ye overall, creates the illusion that a woman swam
9 `& C! z4 I4 B3 n5 c# ~faster than the best man in the same sport, which sounds impossible. Putting+ l6 Z) {* o6 U# E- N& y
aside the gender argument, I believe this is still a leading question that
" k: t t" W0 Timplies to the reader that there is something fishy going on.
! ^! L6 w' B% U8 G/ h% \/ v- z( @. Y7 X/ H h, b1 ?" {4 }
Fourth is another example of cherry-picking. In the same event, there are4 U! Y2 h. o! N, E E1 l
four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93
1 d: i) s. N- K Ws) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s( J; F( m/ |6 @0 W3 W$ x
), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns3 l# s8 ?2 _. ?2 `- v, ^
out, if we are just talking about the last 50 metres in a 400-metre IM,# X1 R W) P* H# A
Lochter is not the example I would have used if I were the author. What kind
; h& L0 u* x& v% Fof scientific rigorousness is Callaway trying to demonstrate here? Is it1 ]! X0 ~& |' y( Z% D5 {
logical that if Lochter is the champion, we should assume that he leads in
6 ^& G$ o# L5 O( z, r0 k6 X1 mevery split? That would be a terrible way to teach the public how science2 H/ D# e7 g: A6 ]0 Z
works.
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Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and
) a+ g. j. p% S6 ?, [implies that a drug test cannot rule out the possibility of doping. Is this) A! _. ^, X7 q6 B/ s3 |; [
kind of agnosticism what Nature really wants to teach its readers? By that! K. N) ^; G6 X" Q
standard, I estimate that at least half of the peer-reviewed scientific
4 G2 a; k2 D: k( k6 ypapers in Nature should be retracted. How can one convince the editors and; U& Q. z' W/ r G8 `
reviewers that their proposed theory works for every possible case? One# I A l0 P# F
cannot. One chooses to apply the theory to typical examples and to" D5 d$ r. o2 m& J- b# d+ X5 V" x
demonstrate that in (hopefully) all scenarios considered, the theory works
0 E: Z1 G: b" x+ j) M3 t7 Dto a degree, and that that should warrant publication until a counterexample4 i* _7 f; P& @6 e, o4 k0 ~
is found. I could imagine that Callaway has a sceptical mind, which is
3 W. Q# ]! J4 K+ U0 ?5 Acrucial to scientific thinking, but that would be put to better use if he N0 t* ^4 k! u# q
wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly
2 i3 M" M5 G8 n: b0 M4 O; J$ A$ Madvanced, non-detectable drug that the Chinese have come up with in the) x8 ~* D% A4 h" }" `+ A! J* F$ K- s
past 4 years (they obviously did not have it in Beijing, otherwise why not
. I, i( }# a! i8 W% _5 u: U! muse it and woo the audience at home?), based on data and rational derivation
2 e/ G9 X7 E' ?" l( c% ], r" C. This article, however, can be interpreted as saying that all athletes are
$ _/ x% O8 X$ B2 S; f2 n5 tdoping and the authorities are just not good enough to catch them. That may
# E, Z/ P/ d4 C8 K, E$ P3 Pbe true, logically, but definitely will not make the case if there is ever a
$ w Z* `2 m' thearing by the governing body for water sports, FINA, to determine if Ye4 t+ b, [1 c9 Q. y
has doped. To ask whether it is possible to obtain a false negative in a
" D% _7 R3 ^ R. C; Zdrug test looks like a rigged question to me. Of course it is possible:) Q' w6 b4 T& y
other than the athlete taking a drug that the test is not designed to detect
3 n# F$ v9 a- r( a/ }6 e, m7 [, anyone who has taken quantum 101 will tell you that everything is0 U9 o3 p- B6 R7 q5 b" e
probabilistic in nature, and so there is a probability that the drug in an0 r* d* ^1 \+ m# ~- }# b, b
athlete’s system could tunnel out right at the moment of the test. A slight# o+ V$ p+ l, t" U9 r | t
chance it may be, but should we disregard all test results because of it?
/ C. H" e z# i+ o1 w! }$ JLet’s be practical and reasonable, and accept that the World Anti-Doping
$ D% s) L2 [& s0 p' |$ Fagency (WADA) is competent at its job. Ye’s urine sample will be stored for
8 i, O4 ~* \0 S7 r% E" ~eight years after the contest for future testing as technology advances.: M) p6 T# @* b9 R! d: t% S
Innocent until proven guilty, shouldn’t it be?
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q- j- {0 l, `' }1 r3 G- z$ t) aSixth, and the last point I would like to make, is that the out-of-) l8 r: \4 E/ \ i
competition drug test is already in effect, which Callaway failed to mention7 L( `( ?9 c1 O% F6 R3 x: s0 u
. As noted in the president of WADA’s press release, drug testing for
; \8 g7 e, v7 y$ e& c% ~# ?Olympians began at least six months before the opening of the London, ]9 _- f) S u3 ~- Z
Olympics. Furthermore, 107 athletes have been banned from this Olympics for
- J: u; S( `/ f& W0 m5 s8 W& h; Sdoping. That may be the reason that “everyone will pass at the Olympic
! B8 |. h- r5 J- D5 V0 wgames. Hardly anyone fails in competition testing” — those who did dope9 A& I; V) I( a
have already been caught and sanctioned. Callaway is free to suggest that a
, C, P2 g0 Z7 y5 Dplayer could have doped beforehand and fooled the test at the game, but this
6 L6 w3 N- M4 a' Q! [* [9 A. P4 bpossibility is certainly ruled out for Ye., l; U+ v2 R" M2 a" p
5 _* d+ f3 e% X% fOver all, even though Callaway did not falsify any data, he did (7 s7 i3 z4 R7 V1 X d) n6 W* t
intentionally or not) cherry-pick data that, in my view, are far too3 e: f; y8 {( K$ R' I! c' d
suggestive to be fair and unbiased. If you want to cover a story of a1 O; M' h& b/ M; T3 J# k; P+ R9 P
suspected doping from a scientific point of view, be impartial and provide6 c2 v9 o; H6 y
all the facts for the reader to judge. You are entitled to your
: x. C6 O2 s0 E5 T# [6 x, finterpretation of the facts, and the expression thereof in your piece,3 `3 C3 L' C) C z$ m* c9 C
explicitly or otherwise, but showing only evidence that favours your
% Y8 \; |" X1 v( j% b# Bargument is hardly good science or journalism. Such an article in a journal
2 j4 R* h, s$ D9 }8 h$ asuch as Nature is not an appropriate example of how scientific research or
0 W: `+ N% n7 ?% d. K$ s6 u% r creporting should be done. |
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