 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
/ Z# h, A( O; B! s" {如果是中国长大的,英语能到这种程度真是很不简单。
+ b$ J# `; u! D& @$ b" D- R$ r
0 o' K7 X+ R! s4 Y6 |http://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html3 ]* }3 r/ m _5 \1 n9 Q
$ |1 n8 Z0 f2 V/ c) LFROM LAI JIANG, Department of Chemistry, University of Pennsylvania9 c! e! f Y3 l- t
# p4 Z& {5 {" _5 q- \; R: EIt is a shame to see Nature — which nearly all scientists, including myself
& d0 `( x6 y1 w9 F2 P, regard as one of the most prestigious and influential physical-science1 u; S7 c5 V- m( ^
magazines — publish a thinly veiled biased article like this. Granted, this( h1 J M. M1 C, K' k8 S7 t
is not a peer-reviewed scientific article and did not go through the3 o2 ?9 G8 ]- z8 C
scrutiny of picking referees. But to serve as a channel for the general
" A; b$ U/ }$ }# mpopulace to be in touch with and appreciate science, the authors and editors
) J$ |1 @8 d4 x1 s+ _6 gshould at least present the readers with facts within the proper context,4 Z2 `+ _# S. _3 ~( ~
which they blatantly failed to do.% C2 Q& n( C: v4 v9 k8 L3 M
2 c; p' h. a- p5 F. k5 p) Y1 T6 rFirst, to identify Ye’s performance increase, Ewen Callaway compared her
2 f6 V' h. G5 L9 fOlympic 400-metre IM time with her performance at the World Championships in
; c. }6 v) f0 Q5 [) {8 d" D2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “" ^! a& M) R% D. }$ x
anomalous” improvement of around 7 seconds (6.72 s). In fact, her previous
, W C( ?6 D7 M$ g$ vpersonal best was 4:33.79 at the Asian Games in 2010. This leads to an
7 ~0 i# l: X8 T/ nimprovement of 5.38 seconds. In a sporting event in which 0.1 s can be the
) r% r* M- o# ndifference between the gold and silver medal, I see no reason for 5.38 s to$ G& f" E$ ~& j# n! B
be treated as 7 s.
1 m. {1 v4 R9 y8 F' |9 B& o) z9 h: N0 ~! L
Second, as previously pointed out, Ye is only 16 years old and her body is1 G( b: }/ r% V# G& {3 G; ]" Z: g
still developing. Bettering oneself by 5 seconds over two years may seem( z% E4 G* Y7 |
impossible for an adult swimmer, but it certainly happens among youngsters.
. D! [ z; l6 j: aAn interview with Australian gold medallist Ian Thorpe revealed that his 400
8 h1 F& s; d. l" o-metre freestyle time improved by 5 seconds between the ages of 15 and 16.
/ q% H9 @/ H, f2 Y, mFor regular people, including Callaway, it may be hard to imagine what an
( f B Q6 ?; U/ P+ f0 n( relite swimmer can achieve as he or she matures and undergoes scientific and" |1 l6 I9 B3 z
persistent training. But jumping to the conclusion that it is “anomalous” l+ l+ i# I; s
based on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.
1 D7 q0 K! k- D- c/ p- s
- O9 N( @. l! X& dThird, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook" @; e& j, [& n7 ?0 d/ F! A! t
example of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in, ]' z/ I3 s% O
the last 50 metres, but Lochte had a huge lead in the first 300 metres, so) ?" W9 Z6 z: M3 u5 Z2 T0 m
he chose not to push himself too hard and to conserve his energy for later7 V+ E* j9 M; a2 C
events (whether this conforms to the Olympic spirit and the ‘use one’s& i% `5 m; p/ i7 E9 f
best efforts to win a match’ requirement that the Badminton World2 s7 G+ c$ a) t+ V
Federation recently invoked to disqualify four badminton pairs is another
4 e" K8 B) g0 L2 stopic worth discussing, though probably not in Nature). Ye, on the other# X" d1 r0 Y6 F
hand, was trailing behind after the first 300 metres and relied on freestyle
" w7 _) S0 o5 v! Q, in which she has an edge, to win the race. Failing to mention this
( |! \# P. H- ^& Nstrategic difference, as well as the fact that Lochte is 23.25 seconds# p, o1 k }% s0 z1 C8 B r
faster (4:05.18) than Ye overall, creates the illusion that a woman swam$ G2 b, _, m; D: }: p/ f
faster than the best man in the same sport, which sounds impossible. Putting
7 A( ^( D/ _- g5 M& v4 `. Yaside the gender argument, I believe this is still a leading question that. b0 S8 \$ H. _3 _( N% a* \
implies to the reader that there is something fishy going on.' k8 ^( s2 _$ j1 d
* }) X& o# f" h& j% t, N' B2 {Fourth is another example of cherry-picking. In the same event, there are
( ?, A+ g/ E4 {1 s( Yfour male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93
2 F: N' i+ ~' W& zs) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s1 P. G T6 y t
), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns
: R1 z B+ ?9 i3 V/ kout, if we are just talking about the last 50 metres in a 400-metre IM,( x u8 B& }- H7 N# d
Lochter is not the example I would have used if I were the author. What kind
6 J$ H0 D( I0 z; P( N1 bof scientific rigorousness is Callaway trying to demonstrate here? Is it
2 \4 {* x' }$ D4 Hlogical that if Lochter is the champion, we should assume that he leads in, }; n0 |' p8 |" x5 P
every split? That would be a terrible way to teach the public how science
0 R; z5 w% u: Q! p( ~2 | Z' W, I8 Jworks.! g: w' b* G2 O* `0 z* N
& M) y% l8 I$ s" n g/ uFifth is the issue I oppose the most. Callaway quotes Ross Tucker and
0 _0 m- \; c$ y! O+ j [implies that a drug test cannot rule out the possibility of doping. Is this
! d7 i* E& k7 F+ M x+ {, Ckind of agnosticism what Nature really wants to teach its readers? By that
4 B0 v' Y {2 d( a/ ostandard, I estimate that at least half of the peer-reviewed scientific5 Y# c9 I. d- w: c6 k& D
papers in Nature should be retracted. How can one convince the editors and
! y: _: b, r& z* Z1 mreviewers that their proposed theory works for every possible case? One
4 Z8 y. w7 o6 O9 \. ecannot. One chooses to apply the theory to typical examples and to, ]: s I7 \$ a
demonstrate that in (hopefully) all scenarios considered, the theory works
' Y+ ^" o8 j0 Tto a degree, and that that should warrant publication until a counterexample7 K9 w, m: J. g& Q0 A# D
is found. I could imagine that Callaway has a sceptical mind, which is
! v+ a) |/ G7 Mcrucial to scientific thinking, but that would be put to better use if he. Y2 a6 n5 V; ^/ {
wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly- D+ ]: {5 v+ B Q+ F( b4 c
advanced, non-detectable drug that the Chinese have come up with in the* z- z% Y; B2 } C( [3 T
past 4 years (they obviously did not have it in Beijing, otherwise why not
$ i) [! L3 k8 J1 Tuse it and woo the audience at home?), based on data and rational derivation
0 {2 K# Y3 L, T8 c" G0 t" Q. This article, however, can be interpreted as saying that all athletes are4 I# Q# e t! M* g6 B
doping and the authorities are just not good enough to catch them. That may
3 f Q) l( G$ V) M, }: Ibe true, logically, but definitely will not make the case if there is ever a( f5 r" X+ n2 s
hearing by the governing body for water sports, FINA, to determine if Ye n% B6 ^+ w( I: p7 w+ E1 q
has doped. To ask whether it is possible to obtain a false negative in a1 t7 ~& i9 r O! V
drug test looks like a rigged question to me. Of course it is possible:
5 ]( S' ^* [3 Mother than the athlete taking a drug that the test is not designed to detect
) e: I: O' p& `, anyone who has taken quantum 101 will tell you that everything is w% ]& W1 K& q- d' ~7 q, w
probabilistic in nature, and so there is a probability that the drug in an# N% [+ Z% Y& b+ c
athlete’s system could tunnel out right at the moment of the test. A slight0 j- G% i6 z: ]. u0 L5 d8 K' G. b+ x
chance it may be, but should we disregard all test results because of it?
* T( ^, B* k& J+ D, ]% ?# V E7 d1 YLet’s be practical and reasonable, and accept that the World Anti-Doping
, t, G' G# {+ l* a, o. N: i# gagency (WADA) is competent at its job. Ye’s urine sample will be stored for
8 I" p% M, ?2 M! `* a# Peight years after the contest for future testing as technology advances.
) G- q. l( n, d; r! n) c1 i. V3 K, V. YInnocent until proven guilty, shouldn’t it be?" |+ N' b4 f' w2 v0 ^- t" Q
3 f1 m$ I1 G$ i1 M( h3 U/ Y
Sixth, and the last point I would like to make, is that the out-of-0 b7 B1 Y( E3 f' |
competition drug test is already in effect, which Callaway failed to mention3 e. U0 I# W- P# H! Q6 F6 g
. As noted in the president of WADA’s press release, drug testing for
2 T# u2 a1 p! ~* `% G* U. W& Q$ GOlympians began at least six months before the opening of the London
& H; T) ~2 b+ Y6 MOlympics. Furthermore, 107 athletes have been banned from this Olympics for
m/ H- l- S2 A+ }7 ydoping. That may be the reason that “everyone will pass at the Olympic
/ d, \2 D' d3 u" t7 w: R: [, }1 Hgames. Hardly anyone fails in competition testing” — those who did dope8 b( R* t( x& C! T. R( `( I% F2 h
have already been caught and sanctioned. Callaway is free to suggest that a y- ^1 w, B8 F& ?* S( P
player could have doped beforehand and fooled the test at the game, but this
' o) B; A6 R; z ?' d9 }possibility is certainly ruled out for Ye.
& U/ K$ T1 k$ i% `, F; d2 i& U3 u& A: Q; I
Over all, even though Callaway did not falsify any data, he did (9 A/ \9 ~1 V ^& A) A6 g8 D2 E! _! h
intentionally or not) cherry-pick data that, in my view, are far too
8 [5 k# I n+ y2 W) Vsuggestive to be fair and unbiased. If you want to cover a story of a
' G$ a) A/ t( R8 E: l* m9 [suspected doping from a scientific point of view, be impartial and provide1 j" l7 e) }/ g' z+ v6 e
all the facts for the reader to judge. You are entitled to your {1 g; L6 J7 M6 F2 L# r
interpretation of the facts, and the expression thereof in your piece,1 P3 w# w- ~+ k1 m1 x, p- h( C
explicitly or otherwise, but showing only evidence that favours your1 F; a- v7 M8 t: B+ B
argument is hardly good science or journalism. Such an article in a journal
# f5 D, Z) D* R) \3 qsuch as Nature is not an appropriate example of how scientific research or8 ~' M4 M& T, M A3 \- v
reporting should be done. |
|