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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: Z3 G* {7 @ U* k& K6 q
如果是中国长大的,英语能到这种程度真是很不简单。* J- H6 ^4 R8 Q
. j9 W" j( y1 @. o+ K2 ?- Hhttp://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html# ?7 \$ |; A5 j9 s! h8 _& C+ q. C6 r: t' {
8 h, h! i) j5 BFROM LAI JIANG, Department of Chemistry, University of Pennsylvania
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" i0 s- O9 o. d, j% i' }- NIt is a shame to see Nature — which nearly all scientists, including myself" W- U0 K; m- b& u- ^( ~7 ?) }" _$ Q
, regard as one of the most prestigious and influential physical-science
$ i) l0 L/ y% y& ?: m' W+ Amagazines — publish a thinly veiled biased article like this. Granted, this
. W5 \! p4 q( |; O; qis not a peer-reviewed scientific article and did not go through the7 Z8 u! ]$ ]5 \3 {% L" Z
scrutiny of picking referees. But to serve as a channel for the general
7 }- A8 D$ M# k" u: apopulace to be in touch with and appreciate science, the authors and editors* i, P7 `1 q, t' c' k2 v
should at least present the readers with facts within the proper context,1 ?8 }/ G* `3 j7 T; p4 e5 {' w' M; c: Q
which they blatantly failed to do.
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/ |/ o, ~! ~" K8 C+ U: @, Z* eFirst, to identify Ye’s performance increase, Ewen Callaway compared her
4 R- u7 }7 `& z) r2 ?. `* }Olympic 400-metre IM time with her performance at the World Championships in& |# {" i# W% n- m5 c8 Y/ T; a
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “% \7 [; H9 L4 c3 E. m% k1 C
anomalous” improvement of around 7 seconds (6.72 s). In fact, her previous
& s0 z; O" [1 G' Z5 y( b! Zpersonal best was 4:33.79 at the Asian Games in 2010. This leads to an
7 I& h: O( G9 [improvement of 5.38 seconds. In a sporting event in which 0.1 s can be the
6 K* o$ X' u% Udifference between the gold and silver medal, I see no reason for 5.38 s to9 d7 Y, A) L3 t* i+ `% f3 S( i
be treated as 7 s.5 j9 q& |: Z4 d, T0 t5 K. e, @3 y
. S3 |+ J: J2 Q! d& YSecond, as previously pointed out, Ye is only 16 years old and her body is8 P- v7 B0 c3 Y! q! K5 b: j
still developing. Bettering oneself by 5 seconds over two years may seem
. X- ?8 E9 j) _. Eimpossible for an adult swimmer, but it certainly happens among youngsters." @. V- M5 C* ^' A) x, ?, a% g
An interview with Australian gold medallist Ian Thorpe revealed that his 400
# Q0 z8 n% C3 C- Z o-metre freestyle time improved by 5 seconds between the ages of 15 and 16.
f6 x* A/ j$ O: [For regular people, including Callaway, it may be hard to imagine what an
6 y( Z; \, X# S! ]# Pelite swimmer can achieve as he or she matures and undergoes scientific and1 Y! f) I* f# w9 a% j- c9 ^: N9 b
persistent training. But jumping to the conclusion that it is “anomalous”- E" O2 U9 r. p
based 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
; R# w0 L2 s' l$ B& H2 P+ s" s/ kexample of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in& E, y' A+ [ i, g% H/ n3 [
the last 50 metres, but Lochte had a huge lead in the first 300 metres, so
3 y% d$ L& S/ P% D6 l9 x" ghe chose not to push himself too hard and to conserve his energy for later
! J- i" |% t& l3 o" l+ hevents (whether this conforms to the Olympic spirit and the ‘use one’s
/ F2 c8 g! `% m1 r0 v/ [1 Pbest efforts to win a match’ requirement that the Badminton World
, H* k& N% k9 ]6 aFederation recently invoked to disqualify four badminton pairs is another
4 G! \, L, T* S1 Ntopic worth discussing, though probably not in Nature). Ye, on the other
# V5 i5 S) [' q! p. a$ U' q6 Shand, was trailing behind after the first 300 metres and relied on freestyle0 `& {& w+ T4 L
, in which she has an edge, to win the race. Failing to mention this
# _# W }7 f8 f) _4 `strategic difference, as well as the fact that Lochte is 23.25 seconds
# [3 B. {! f9 ^. x" N' Pfaster (4:05.18) than Ye overall, creates the illusion that a woman swam: J7 ?9 o+ `8 }+ j
faster than the best man in the same sport, which sounds impossible. Putting
) F$ g' t' v9 d ~) ?aside the gender argument, I believe this is still a leading question that! y' c/ M) `& N3 n+ c% u& ]) B
implies to the reader that there is something fishy going on.: k7 A( w& {& y$ Y7 X& H L0 r
! l z) D; r4 e6 d, L5 hFourth is another example of cherry-picking. In the same event, there are2 q% y. R) |- Q3 a8 z* [' ?' u2 Y
four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.931 N; c& P4 E7 R
s) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s
3 e% l( K) O0 G; R7 k), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns
; l' }1 G0 H* P: r8 g5 Iout, if we are just talking about the last 50 metres in a 400-metre IM,' f1 O& y6 k% z1 x% S* {
Lochter is not the example I would have used if I were the author. What kind
8 @$ Z5 m% d, M) }7 e9 |( Yof scientific rigorousness is Callaway trying to demonstrate here? Is it
7 [9 z0 J# w* y9 U, x9 H; I clogical that if Lochter is the champion, we should assume that he leads in3 C4 [1 ?/ w+ [) L9 E
every split? That would be a terrible way to teach the public how science# d, F; t7 h4 d# y' e$ S
works.
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( Y0 J5 S& u7 W6 C: o/ |. _" pFifth is the issue I oppose the most. Callaway quotes Ross Tucker and
7 I8 u) C% ~* iimplies that a drug test cannot rule out the possibility of doping. Is this
3 _ E- j$ o8 M, F: Z& S$ rkind of agnosticism what Nature really wants to teach its readers? By that
& P7 M( Z5 C8 ]* m" U: M A( c9 ^: xstandard, I estimate that at least half of the peer-reviewed scientific
' R" Z0 q. p* Rpapers in Nature should be retracted. How can one convince the editors and/ I+ Y% R# a3 @$ L
reviewers that their proposed theory works for every possible case? One
% X- A. _. b$ b3 _, B% Icannot. One chooses to apply the theory to typical examples and to
0 s$ |' j* V: J$ e! @, R8 P1 f; Sdemonstrate that in (hopefully) all scenarios considered, the theory works
: [9 a" B1 W% X6 Qto a degree, and that that should warrant publication until a counterexample
" y% w5 e. w. Y4 ^" Ois found. I could imagine that Callaway has a sceptical mind, which is
, d" \2 r$ m' ycrucial to scientific thinking, but that would be put to better use if he
2 c( ?& g7 ] h; O; n' qwrote a peer-reviewed paper that discussed the odds of Ye doping on a highly5 g* {& h+ m, e2 N- D
advanced, non-detectable drug that the Chinese have come up with in the, o0 l4 i, I& A6 S7 X3 }* ~# `
past 4 years (they obviously did not have it in Beijing, otherwise why not5 r- {6 o- J A$ }/ E. H I7 v
use it and woo the audience at home?), based on data and rational derivation7 j0 H' v' h! m7 c$ I+ G7 B' p4 v' f/ c
. This article, however, can be interpreted as saying that all athletes are4 s2 u7 V. Q& g
doping and the authorities are just not good enough to catch them. That may
3 k: X2 r+ j3 Sbe true, logically, but definitely will not make the case if there is ever a3 Z1 A4 r. b \5 H7 K; P# U
hearing by the governing body for water sports, FINA, to determine if Ye8 ?6 R) H3 F' W+ e2 |$ Y' k
has doped. To ask whether it is possible to obtain a false negative in a
. G" D6 R/ ^$ |# n0 g U8 Q. R4 @drug test looks like a rigged question to me. Of course it is possible:
4 ^8 C1 K6 @/ _: `1 P; G! q# w9 d# }other than the athlete taking a drug that the test is not designed to detect% {6 E) f/ {' X+ I. W$ u
, anyone who has taken quantum 101 will tell you that everything is
! ?% I- t" e& s* r. {probabilistic in nature, and so there is a probability that the drug in an9 Q4 Y. Y/ g! S
athlete’s system could tunnel out right at the moment of the test. A slight
?6 P& L7 v, R+ T4 ^/ echance it may be, but should we disregard all test results because of it?
+ K0 \- O# g- O6 _Let’s be practical and reasonable, and accept that the World Anti-Doping
+ k3 J3 ^* T$ _5 p3 W L3 iagency (WADA) is competent at its job. Ye’s urine sample will be stored for
$ K( f: _4 j9 s% |2 Geight years after the contest for future testing as technology advances.' s5 X6 ?" B; g2 I
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-; X+ t4 D$ q% y0 i
competition drug test is already in effect, which Callaway failed to mention& F9 K# P* v5 B6 _
. As noted in the president of WADA’s press release, drug testing for
b: |, ]+ t2 O5 j9 |# Z: MOlympians began at least six months before the opening of the London2 ]% u% t3 q% r, L/ P+ X
Olympics. Furthermore, 107 athletes have been banned from this Olympics for3 T' I! g/ _3 S$ Q, L
doping. That may be the reason that “everyone will pass at the Olympic
* |6 l, g' X( f/ B; F: Egames. Hardly anyone fails in competition testing” — those who did dope5 p( Z3 o4 x( l7 ]7 j2 c% e
have already been caught and sanctioned. Callaway is free to suggest that a
9 A7 L9 r8 b8 x4 Eplayer could have doped beforehand and fooled the test at the game, but this/ {' r& S* f+ x; J3 F
possibility is certainly ruled out for Ye.. Z! ?+ ^' K# Q+ ]# N7 Q1 n
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Over all, even though Callaway did not falsify any data, he did (
# p: |% |; e+ o+ zintentionally or not) cherry-pick data that, in my view, are far too
/ I+ U P1 J( c) W7 x4 o- i- Z3 asuggestive to be fair and unbiased. If you want to cover a story of a& i R I0 n/ U/ h1 k
suspected doping from a scientific point of view, be impartial and provide0 z0 p; c7 Z+ D& m( j
all the facts for the reader to judge. You are entitled to your2 C1 q. I J4 Z( d. O
interpretation of the facts, and the expression thereof in your piece,+ g! t+ x2 i1 v7 Q8 Y0 @
explicitly or otherwise, but showing only evidence that favours your5 [3 u2 s3 l3 P" ]- @( L
argument is hardly good science or journalism. Such an article in a journal
v& n9 t% U* f) isuch as Nature is not an appropriate example of how scientific research or
% r/ G* e& L' O8 K! ^6 R4 \reporting should be done. |
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