 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( ?) T7 z# t7 w' i, {
如果是中国长大的,英语能到这种程度真是很不简单。
/ ]: c$ H' Q$ I/ F* R' N. u% H0 g, l9 M4 F# l. X1 t, T6 u
http://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html* m9 \6 q' b" W# f8 \
. \* E% F: r0 Q- Y
FROM LAI JIANG, Department of Chemistry, University of Pennsylvania
4 Z" g& _: B% t1 p/ ^9 L, @
) n5 R! c6 e |' P. X( A3 mIt is a shame to see Nature — which nearly all scientists, including myself
_6 [; Y [: `2 N, regard as one of the most prestigious and influential physical-science( b8 Z1 p% C# l/ C# N- `# e
magazines — publish a thinly veiled biased article like this. Granted, this% @- H/ K4 {: L. [: \
is not a peer-reviewed scientific article and did not go through the; ~$ f% W4 P# h8 C4 W, [, P
scrutiny of picking referees. But to serve as a channel for the general5 A$ ?$ W0 N! D
populace to be in touch with and appreciate science, the authors and editors
# f# w0 y/ {! F# |: j; a# q9 Nshould at least present the readers with facts within the proper context,
( b {# k4 a( U& vwhich they blatantly failed to do.
# R, D" R5 f3 c( N" [* m" {# w/ w) ?: b4 q
First, to identify Ye’s performance increase, Ewen Callaway compared her2 }, e/ |4 |* |4 z M Q
Olympic 400-metre IM time with her performance at the World Championships in
# N8 g2 O# a/ v* k1 k2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “- I7 W! L" O9 A, p R$ N6 L9 ^
anomalous” improvement of around 7 seconds (6.72 s). In fact, her previous
( V& E/ H% ~, t! ?personal best was 4:33.79 at the Asian Games in 2010. This leads to an: [. x4 G: W; n% b% H; b9 A; e
improvement of 5.38 seconds. In a sporting event in which 0.1 s can be the: q& _# ?0 A7 m7 n
difference between the gold and silver medal, I see no reason for 5.38 s to f4 D/ n; C: _# d4 l. [) n" V
be treated as 7 s." p+ k, m' i2 l0 G; F* A% n; y4 {" A
6 q/ p' p+ t/ H; `/ } `' T+ \- X0 B
Second, as previously pointed out, Ye is only 16 years old and her body is
+ z5 Q4 ]3 c$ T; _ s% N6 estill developing. Bettering oneself by 5 seconds over two years may seem
/ v8 i' _# f7 ]# C" L0 P4 Yimpossible for an adult swimmer, but it certainly happens among youngsters., b; t7 G# M6 U; A0 C
An interview with Australian gold medallist Ian Thorpe revealed that his 400# G: Z" R) q0 H% S
-metre freestyle time improved by 5 seconds between the ages of 15 and 16.
/ a0 T- W% j) fFor regular people, including Callaway, it may be hard to imagine what an
5 i; L7 f+ Y3 f# M) celite swimmer can achieve as he or she matures and undergoes scientific and
9 P, ^& n+ m- ^) Q4 V6 Y4 Ipersistent training. But jumping to the conclusion that it is “anomalous”
, U* {7 e1 ^: Gbased on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.' h; F& {! @9 a- y
5 t+ S7 F6 h7 S7 V8 h8 n- KThird, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook' Q2 ]' S/ `4 K$ _/ G
example of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in
+ l! N+ ?& E S! u0 lthe last 50 metres, but Lochte had a huge lead in the first 300 metres, so" A2 e: P. q0 E3 f0 `
he chose not to push himself too hard and to conserve his energy for later
7 g+ A. K0 w. ^/ Hevents (whether this conforms to the Olympic spirit and the ‘use one’s
0 t& u, g" d) j/ S/ w y( }$ jbest efforts to win a match’ requirement that the Badminton World1 D) T# f! O) y
Federation recently invoked to disqualify four badminton pairs is another' o) v- B% b7 |% A. A
topic worth discussing, though probably not in Nature). Ye, on the other
2 e' s; K- }7 Phand, was trailing behind after the first 300 metres and relied on freestyle7 L9 t5 U W/ d0 {/ |
, in which she has an edge, to win the race. Failing to mention this
* O/ M, e4 B8 m6 kstrategic difference, as well as the fact that Lochte is 23.25 seconds
" a* n' \; s* D" R* z* _faster (4:05.18) than Ye overall, creates the illusion that a woman swam' w3 o- Y7 i: c( s y V6 g: i
faster than the best man in the same sport, which sounds impossible. Putting
" r0 p/ ]! ]1 x, K$ J+ T: Iaside the gender argument, I believe this is still a leading question that: i( t# K, u3 P1 m0 r- \+ X
implies to the reader that there is something fishy going on.
6 I1 C/ ^. h* z- H9 X/ ?
1 @- v* x0 r8 v2 @Fourth is another example of cherry-picking. In the same event, there are9 g( f) X' {, ^% N; _. ^
four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93
8 H) Y% T% c- p% F3 {9 D- Gs) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s! T, R1 J8 y0 F% R, I, _: c0 f
), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns' y+ o: t' k; s
out, if we are just talking about the last 50 metres in a 400-metre IM,+ o% J% q+ b( X7 x0 |& E& [
Lochter is not the example I would have used if I were the author. What kind
! ] r# O+ I7 r$ w" l+ k Jof scientific rigorousness is Callaway trying to demonstrate here? Is it! U% R3 m, ]* u
logical that if Lochter is the champion, we should assume that he leads in G6 {4 L1 J& y( \1 Z) [* o# ~
every split? That would be a terrible way to teach the public how science v; @- Z# {, z, D+ G/ Y
works., f0 g! f; r4 N6 @& ?
g' K1 O. ?0 E* f, r7 X6 g0 n: }
Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and! p7 y# L/ I) t L
implies that a drug test cannot rule out the possibility of doping. Is this# y* Z0 F" n& W4 q3 N7 q% ^
kind of agnosticism what Nature really wants to teach its readers? By that
+ L7 T$ c |0 d3 T1 Z2 u3 w0 Dstandard, I estimate that at least half of the peer-reviewed scientific
9 \0 b7 ~2 b- E# `, n8 a2 Ypapers in Nature should be retracted. How can one convince the editors and8 D% q5 T% ^4 b7 I- K1 g3 i
reviewers that their proposed theory works for every possible case? One* O6 u0 \& |3 j+ G
cannot. One chooses to apply the theory to typical examples and to: P/ w* z; S$ M1 ~% X+ }
demonstrate that in (hopefully) all scenarios considered, the theory works
4 f3 a7 F+ B) \" K$ Qto a degree, and that that should warrant publication until a counterexample
2 t3 j! P* e5 y3 O( V- M" e" z$ V( }is found. I could imagine that Callaway has a sceptical mind, which is
1 P7 L9 u) i& j( \9 r8 acrucial to scientific thinking, but that would be put to better use if he! i& Q! J& U7 I* A5 f
wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly
+ Y! x( i" T, {" |/ Ladvanced, non-detectable drug that the Chinese have come up with in the
3 e! |1 @1 `/ M1 j' Rpast 4 years (they obviously did not have it in Beijing, otherwise why not8 e7 R% G. n- h: {
use it and woo the audience at home?), based on data and rational derivation5 T9 w/ Q! l/ B3 D# a6 S3 B
. This article, however, can be interpreted as saying that all athletes are
. T Q- d9 T# R. ndoping and the authorities are just not good enough to catch them. That may$ x) W' T4 I. {6 _+ i
be true, logically, but definitely will not make the case if there is ever a" A3 r8 F' b0 I* o6 [/ \
hearing by the governing body for water sports, FINA, to determine if Ye$ i9 O( R/ z6 y" k. e( p% a
has doped. To ask whether it is possible to obtain a false negative in a, k+ A8 K8 V5 I9 d& E
drug test looks like a rigged question to me. Of course it is possible:
' g7 y0 a. d8 Q# v, a4 E% h4 eother than the athlete taking a drug that the test is not designed to detect) q+ Y! V) I# H6 z0 X4 \
, anyone who has taken quantum 101 will tell you that everything is- a1 N$ q2 K) N; E) K
probabilistic in nature, and so there is a probability that the drug in an
2 n* U: w5 ]# I: T8 }athlete’s system could tunnel out right at the moment of the test. A slight' c& T7 ~) J; T$ a8 c
chance it may be, but should we disregard all test results because of it?' }7 Y: ]5 o& n* ^9 ~) [' E! ^2 s
Let’s be practical and reasonable, and accept that the World Anti-Doping
D7 R2 c- C3 nagency (WADA) is competent at its job. Ye’s urine sample will be stored for P" F% W8 l5 N8 [( y9 |! |
eight years after the contest for future testing as technology advances.
" u1 ?" A. w* `% ^4 i5 DInnocent until proven guilty, shouldn’t it be?
* |- q, m: \2 d* e4 Q- w" W7 `4 x8 }
* h9 @6 _" l4 N, @$ aSixth, and the last point I would like to make, is that the out-of-/ n- b+ D, d" W' S2 G* W( t
competition drug test is already in effect, which Callaway failed to mention/ f5 `! u7 g. o4 g' N9 ?' X
. As noted in the president of WADA’s press release, drug testing for: @' q; @: Z! ~: \2 |" \
Olympians began at least six months before the opening of the London
0 m* O/ ?1 S- C" |) tOlympics. Furthermore, 107 athletes have been banned from this Olympics for9 r9 Q" ?; `! q- q
doping. That may be the reason that “everyone will pass at the Olympic8 E# B' o$ Y8 C2 j- g3 K) m
games. Hardly anyone fails in competition testing” — those who did dope
- p' a2 } u$ x" |) k& a4 A7 G9 h; Fhave already been caught and sanctioned. Callaway is free to suggest that a* i2 P0 M$ j' n' f( A
player could have doped beforehand and fooled the test at the game, but this
" y" C4 ^( `! b2 epossibility is certainly ruled out for Ye.2 m4 w' Z, G' b7 e3 b
0 y( U9 Q- E5 R/ x$ B$ I) vOver all, even though Callaway did not falsify any data, he did (
2 Z* ^- J2 I1 R% }# o' V, x Yintentionally or not) cherry-pick data that, in my view, are far too W4 A' P4 x% r/ p
suggestive to be fair and unbiased. If you want to cover a story of a* e7 o: a3 F! P3 k* A) b
suspected doping from a scientific point of view, be impartial and provide
, C$ g6 X, O2 m# i: S' V; o1 M7 Tall the facts for the reader to judge. You are entitled to your5 M4 f3 o l; R
interpretation of the facts, and the expression thereof in your piece,
# d8 @+ k! O0 b/ Sexplicitly or otherwise, but showing only evidence that favours your) v' W; }7 N8 s5 }+ y
argument is hardly good science or journalism. Such an article in a journal; p: {6 a- a i& C- D' D- }' g
such as Nature is not an appropriate example of how scientific research or: C! s" C$ ^$ E9 h) E. C5 G
reporting should be done. |
|