 鲜花( 5)  鸡蛋( 6)
|

楼主 |
发表于 2012-8-14 00:55
|
显示全部楼层
其实比饶毅更牛的回复是 Upenn 的 LAI JIANG% h# y8 B2 E4 g) t+ _
如果是中国长大的,英语能到这种程度真是很不简单。
, P/ B5 W! a$ v: p8 }* p: H) j5 R5 x
http://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html
" k2 d+ K* w1 a. \- t" C. s% N$ U: g7 [
FROM LAI JIANG, Department of Chemistry, University of Pennsylvania
$ R7 g: b: U( j2 t& j2 p5 U* A: E0 E! z n3 W4 a4 @. m
It is a shame to see Nature — which nearly all scientists, including myself y6 A/ A8 L- p
, regard as one of the most prestigious and influential physical-science
* y# m! w/ `: l' Nmagazines — publish a thinly veiled biased article like this. Granted, this1 H, Z K2 z5 V( p, W9 n% f
is not a peer-reviewed scientific article and did not go through the
- Y: F- ^; Q0 wscrutiny of picking referees. But to serve as a channel for the general
6 H) M& S. |- Q8 U/ D+ Ypopulace to be in touch with and appreciate science, the authors and editors. [5 v; a7 O- ^
should at least present the readers with facts within the proper context,0 H6 h) Q Q6 c9 m' W1 A' o
which they blatantly failed to do.; S) B. r; h6 A
$ ]; p: H" n" n# y1 T; w1 VFirst, to identify Ye’s performance increase, Ewen Callaway compared her
% w( m: B8 P" G" v9 W* p0 P( aOlympic 400-metre IM time with her performance at the World Championships in1 W5 g* c8 p5 U& p
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “
0 z5 A8 i! [2 a) H' N3 Yanomalous” improvement of around 7 seconds (6.72 s). In fact, her previous
D" H# l5 u: Ppersonal best was 4:33.79 at the Asian Games in 2010. This leads to an" N6 S( d' N: H" n3 l: E/ z
improvement of 5.38 seconds. In a sporting event in which 0.1 s can be the. f; H7 u8 J1 g: d5 D* b
difference between the gold and silver medal, I see no reason for 5.38 s to9 D8 @2 W8 m- s4 q/ _
be treated as 7 s.
% w A5 h' ]: z. w4 |) a% b
; l& B1 e( x# [Second, as previously pointed out, Ye is only 16 years old and her body is. E% g2 F% A5 \; ~7 W# ]) b
still developing. Bettering oneself by 5 seconds over two years may seem
4 f2 C, [9 u( u) N8 Dimpossible for an adult swimmer, but it certainly happens among youngsters.
) ?/ y |! r- S4 x5 a& o1 SAn interview with Australian gold medallist Ian Thorpe revealed that his 400
& Y1 a+ L" ]3 ^+ l-metre freestyle time improved by 5 seconds between the ages of 15 and 16.
: M' g" x# W; X! fFor regular people, including Callaway, it may be hard to imagine what an7 L0 Y& T8 l& h: O
elite swimmer can achieve as he or she matures and undergoes scientific and |( G3 W- H% _1 j, V/ |# ?
persistent training. But jumping to the conclusion that it is “anomalous”5 B4 H! Q S7 C/ ^' ?
based on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.
7 g4 q' X& `! \' R
9 ]# M1 Y) d1 w4 Y6 h% M# BThird, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook' m* N; L+ b2 f1 p$ m: q% x
example of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in9 f1 f \4 q- _' L
the last 50 metres, but Lochte had a huge lead in the first 300 metres, so
1 c0 H* i% V5 Ihe chose not to push himself too hard and to conserve his energy for later( c# `, E- Z- R0 y1 |
events (whether this conforms to the Olympic spirit and the ‘use one’s
9 n5 a/ `' z E! ~3 dbest efforts to win a match’ requirement that the Badminton World
8 v1 |4 S! C; _/ B& HFederation recently invoked to disqualify four badminton pairs is another
; x8 V/ R8 q) b) ?' [( |topic worth discussing, though probably not in Nature). Ye, on the other8 I4 V* x0 G% U& x5 |* ~, V$ A
hand, was trailing behind after the first 300 metres and relied on freestyle
! A) X1 w' k/ G8 p% C; Q3 `, in which she has an edge, to win the race. Failing to mention this, R6 b/ v$ H9 f! U$ ]; ^+ V I
strategic difference, as well as the fact that Lochte is 23.25 seconds
# T& y9 D* Q+ s, }" O lfaster (4:05.18) than Ye overall, creates the illusion that a woman swam
4 w+ C: {4 W: }4 s# h7 ?+ g4 s/ Cfaster than the best man in the same sport, which sounds impossible. Putting
2 c* ]7 v' N" h4 paside the gender argument, I believe this is still a leading question that2 ]6 r4 x% a& ]" |, ~
implies to the reader that there is something fishy going on./ P8 u1 e$ m. q- N
u& c4 B5 c+ s- k6 `" n6 KFourth is another example of cherry-picking. In the same event, there are( J: C. B. ]7 @9 g
four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93& q+ H K6 h+ J* X* m: ^1 @
s) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s
7 E; P( S4 ]( N2 C) y8 g), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns% k9 |$ o9 x* t4 V! q. W$ R9 y
out, if we are just talking about the last 50 metres in a 400-metre IM,$ d; F, R4 D% ?" X( t
Lochter is not the example I would have used if I were the author. What kind6 B! S" ~ z3 w! [( d+ L
of scientific rigorousness is Callaway trying to demonstrate here? Is it3 Q1 H9 F& T' S7 D) u5 W$ }
logical that if Lochter is the champion, we should assume that he leads in$ r9 }- m* M% s( A0 T% ]1 x3 ?0 k: v
every split? That would be a terrible way to teach the public how science2 b+ B2 a! {) x1 R& t: R
works. X7 U9 O( o4 X s# J" z8 x' G8 S
* d0 [% d8 W7 f& T/ B
Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and" G i: a1 w2 F* s
implies that a drug test cannot rule out the possibility of doping. Is this2 k1 [9 z5 i7 L/ n1 g1 T' X8 o
kind of agnosticism what Nature really wants to teach its readers? By that7 m7 E6 a M8 d9 [
standard, I estimate that at least half of the peer-reviewed scientific
" c8 J; H0 U) W, e- E7 q. Qpapers in Nature should be retracted. How can one convince the editors and
; S) z1 k4 A4 J! |: Oreviewers that their proposed theory works for every possible case? One* J5 H0 H. C' ~- i0 l; j) q) _6 w
cannot. One chooses to apply the theory to typical examples and to
: H) }7 j6 m/ p- x; odemonstrate that in (hopefully) all scenarios considered, the theory works
, J3 z4 A6 l a7 @' H1 Nto a degree, and that that should warrant publication until a counterexample
: Q5 {( X$ x, f8 S' tis found. I could imagine that Callaway has a sceptical mind, which is4 r* T4 U9 T$ y0 P* q
crucial to scientific thinking, but that would be put to better use if he% K! j8 }/ M! p6 J. j, G5 G9 W1 O
wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly; P6 {) c1 `" d/ \; [2 y# r: l
advanced, non-detectable drug that the Chinese have come up with in the F9 X; l" G2 \$ p4 ~( m5 Z
past 4 years (they obviously did not have it in Beijing, otherwise why not
0 ~! N- P: q/ ?" ~! w9 wuse it and woo the audience at home?), based on data and rational derivation
- l4 s6 J A( y4 K- P/ p. This article, however, can be interpreted as saying that all athletes are
! I6 P" F2 H. [3 R+ z/ vdoping and the authorities are just not good enough to catch them. That may+ D4 Y k2 j5 N
be true, logically, but definitely will not make the case if there is ever a
: ?% r! ~, }) S7 @ ]( O, Ohearing by the governing body for water sports, FINA, to determine if Ye% _1 y1 O* I9 P4 t
has doped. To ask whether it is possible to obtain a false negative in a
p+ y: v! d" w5 o( E; R3 Jdrug test looks like a rigged question to me. Of course it is possible:
: J5 G" O- C: b* O dother than the athlete taking a drug that the test is not designed to detect& G+ N7 A. ]# F8 q$ i: b, [
, anyone who has taken quantum 101 will tell you that everything is
% k9 t$ ?, O! V6 c8 \3 y7 Zprobabilistic in nature, and so there is a probability that the drug in an; p' y! d3 o! u2 q3 U, ?5 B) V
athlete’s system could tunnel out right at the moment of the test. A slight5 I7 q* s. g$ s- u
chance it may be, but should we disregard all test results because of it?
1 j, ^" B# e5 R0 e* {3 TLet’s be practical and reasonable, and accept that the World Anti-Doping
) Q) P4 [6 o) Magency (WADA) is competent at its job. Ye’s urine sample will be stored for
5 d9 Q/ Y) i% ]5 ^, Y8 Qeight years after the contest for future testing as technology advances.
/ o# @( K* D( Z7 w6 Q" QInnocent until proven guilty, shouldn’t it be?
; W; K, P a4 E' j/ y
# X* \. v: k7 g8 y8 p* fSixth, and the last point I would like to make, is that the out-of-
0 J6 M7 q" L8 p0 ]6 Y' E3 Mcompetition drug test is already in effect, which Callaway failed to mention
# Z: l8 f* U) ?' K5 B% w. o. As noted in the president of WADA’s press release, drug testing for
8 j5 G9 n! H4 `8 d' dOlympians began at least six months before the opening of the London4 t4 @. x" `: w1 s {& _
Olympics. Furthermore, 107 athletes have been banned from this Olympics for/ {, V2 Q0 R( }- A; d2 f' b5 M% {; g* F* C- f
doping. That may be the reason that “everyone will pass at the Olympic" Z8 d, y- T& r# l
games. Hardly anyone fails in competition testing” — those who did dope5 ~, z R7 }6 i0 d& N) w/ n
have already been caught and sanctioned. Callaway is free to suggest that a
5 ^: @# U, x5 j o& h# splayer could have doped beforehand and fooled the test at the game, but this8 Q* A$ P7 O5 p3 `8 M
possibility is certainly ruled out for Ye.9 D+ U5 X# C* \9 {4 `
; D7 }, R$ E, w0 I
Over all, even though Callaway did not falsify any data, he did (! B8 w+ l! n( t
intentionally or not) cherry-pick data that, in my view, are far too
4 k, `( q9 r+ c' Osuggestive to be fair and unbiased. If you want to cover a story of a# ~) H9 P' I; s) Y) ?
suspected doping from a scientific point of view, be impartial and provide
" W3 a- b2 u* lall the facts for the reader to judge. You are entitled to your' _* z9 z- n E% F. k/ R
interpretation of the facts, and the expression thereof in your piece,1 `# d2 N$ W; x
explicitly or otherwise, but showing only evidence that favours your
) Y* S# W2 m, ^+ S: ?7 `argument is hardly good science or journalism. Such an article in a journal: w! q; D9 Q3 x% @3 F: y0 e7 x
such as Nature is not an appropriate example of how scientific research or, M4 Y, j$ c, Y8 A' P) j4 O7 @
reporting should be done. |
|