 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
& l' A! f' K1 n0 Y4 L6 n如果是中国长大的,英语能到这种程度真是很不简单。
, g, C W% W' s) U5 Q' D/ Z h5 N2 T
http://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html
G, o% [' J" V2 m/ I
. D4 D+ f( E0 ^3 X" @0 E+ BFROM LAI JIANG, Department of Chemistry, University of Pennsylvania
5 ^+ H5 ] f' h% p
4 J2 H6 t% z$ ?It is a shame to see Nature — which nearly all scientists, including myself) ?9 a0 m3 S" O, u! g; F( \& F5 R
, regard as one of the most prestigious and influential physical-science- R) p/ \7 D( ~% g' L5 a
magazines — publish a thinly veiled biased article like this. Granted, this
+ c3 d. Y. a9 b( C. u: t- A8 Lis not a peer-reviewed scientific article and did not go through the
1 B- ?+ w+ ^6 M. [3 Lscrutiny of picking referees. But to serve as a channel for the general
W4 n5 C9 }* V: S+ T& opopulace to be in touch with and appreciate science, the authors and editors# r( k; g6 b3 @% o) x
should at least present the readers with facts within the proper context,
( b" [; b3 H0 X" s2 |0 p3 Swhich they blatantly failed to do.
5 B6 }9 p; z* p9 D3 I
/ q7 b; S3 F- o2 S% J3 Q+ MFirst, to identify Ye’s performance increase, Ewen Callaway compared her) d& z4 J& K- e. i0 r+ y3 `
Olympic 400-metre IM time with her performance at the World Championships in3 ^) U+ b% b7 [7 J$ I
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “
/ Q [: C# L, e& a# L5 ganomalous” improvement of around 7 seconds (6.72 s). In fact, her previous1 y: K7 L1 r( V2 g
personal best was 4:33.79 at the Asian Games in 2010. This leads to an! N$ r; R: j) Y a5 g. Q+ k
improvement of 5.38 seconds. In a sporting event in which 0.1 s can be the
( v7 ?* G8 G1 g6 @difference between the gold and silver medal, I see no reason for 5.38 s to' o$ F6 i/ c; y- T7 V9 r2 r) E* O
be treated as 7 s.* K" i d- r5 M. W4 O
' g* Q) R6 [ q/ lSecond, as previously pointed out, Ye is only 16 years old and her body is
; K. W' h+ D. _- Y/ u3 E$ _still developing. Bettering oneself by 5 seconds over two years may seem
- y# Y c+ N1 {% [* X4 V$ Eimpossible for an adult swimmer, but it certainly happens among youngsters.
- E4 U+ X& d" HAn interview with Australian gold medallist Ian Thorpe revealed that his 400, L' `2 A; h5 g1 [$ H
-metre freestyle time improved by 5 seconds between the ages of 15 and 16.
. f% U) K0 ^2 V5 mFor regular people, including Callaway, it may be hard to imagine what an* P* J/ [( i6 X8 F
elite swimmer can achieve as he or she matures and undergoes scientific and
9 J" L, I5 x/ K' R, Ppersistent training. But jumping to the conclusion that it is “anomalous”# ^2 _/ C& m! n, y
based on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.
4 l3 {5 y" r' [
4 b* }9 O9 w, J2 r( @Third, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook
# J' |. a- a* w- }example of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in" J" ?. a; Y! E3 b9 T/ Z
the last 50 metres, but Lochte had a huge lead in the first 300 metres, so- j! U- r& o9 A
he chose not to push himself too hard and to conserve his energy for later! r& V# y' q" E/ F* Z* L- A
events (whether this conforms to the Olympic spirit and the ‘use one’s
: F5 x7 h- d* A# f% Dbest efforts to win a match’ requirement that the Badminton World+ J1 O% {9 }9 ~' k- |4 p
Federation recently invoked to disqualify four badminton pairs is another+ m+ o1 ^/ i& A8 i; C( b
topic worth discussing, though probably not in Nature). Ye, on the other. p* y- ]/ x2 h) a
hand, was trailing behind after the first 300 metres and relied on freestyle
7 n. Q+ ~5 B& o S$ v" {, in which she has an edge, to win the race. Failing to mention this& N/ c' t3 P, X9 @, ?9 @; K
strategic difference, as well as the fact that Lochte is 23.25 seconds( D7 Z6 T& a' Q" n' }9 f" S
faster (4:05.18) than Ye overall, creates the illusion that a woman swam$ `4 W+ e% y! I' u
faster than the best man in the same sport, which sounds impossible. Putting: w3 `" y6 j2 r7 S4 U' Y
aside the gender argument, I believe this is still a leading question that
. \: J/ Y1 ~+ zimplies to the reader that there is something fishy going on.
& R- r- ?0 v9 q8 Z! f/ b- Q! Q, `9 v3 j5 _3 W" E0 R" J2 J
Fourth is another example of cherry-picking. In the same event, there are1 n ?# U7 `7 U, J4 X
four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93
: U1 m! `4 L! I) `: X* \s) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s! d4 a2 {: B7 d8 K1 F
), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns
0 Z: U! G/ h \1 j/ K# f' Kout, if we are just talking about the last 50 metres in a 400-metre IM, T3 D- f. {3 {) K" P
Lochter is not the example I would have used if I were the author. What kind
' H( z3 J( z* H, F: X( Tof scientific rigorousness is Callaway trying to demonstrate here? Is it
) {) N& d( t7 b, W7 Nlogical that if Lochter is the champion, we should assume that he leads in
5 y W! F# j- F7 K) Y7 s: N" c$ oevery split? That would be a terrible way to teach the public how science& l3 |1 |6 x X& E8 O8 k
works.
- w8 |9 D+ j, n1 s: [/ \0 Q% W. R7 @- O: a1 X+ L
Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and
! j3 N- r+ j$ e% r& g( E1 I' Vimplies that a drug test cannot rule out the possibility of doping. Is this. f* }' x; I2 P* r$ f
kind of agnosticism what Nature really wants to teach its readers? By that
, N! W( j- w1 c$ _# Y: j& \6 jstandard, I estimate that at least half of the peer-reviewed scientific0 w" I* ]. H7 `1 W' p, W$ |
papers in Nature should be retracted. How can one convince the editors and
0 z8 l; W8 ~, Breviewers that their proposed theory works for every possible case? One
7 Z- ?' r3 t5 {cannot. One chooses to apply the theory to typical examples and to; i' s! s' w' }4 |, R; z
demonstrate that in (hopefully) all scenarios considered, the theory works
9 r8 c5 i) Z& V& v2 n. e3 e4 [to a degree, and that that should warrant publication until a counterexample
8 U: d' _, @' lis found. I could imagine that Callaway has a sceptical mind, which is/ [( o* Z6 ?5 y9 j1 x. r' O9 B
crucial to scientific thinking, but that would be put to better use if he
" `- ^8 y! C# nwrote a peer-reviewed paper that discussed the odds of Ye doping on a highly
+ H, A) L, u/ ], T6 {, j2 eadvanced, non-detectable drug that the Chinese have come up with in the7 y: G, i! d8 B L8 N
past 4 years (they obviously did not have it in Beijing, otherwise why not- W1 n7 M6 q3 s; [, Z% V1 y* x
use it and woo the audience at home?), based on data and rational derivation
' ^1 S, ~" a! _; U5 L. This article, however, can be interpreted as saying that all athletes are
6 o' p. U) L" ~doping and the authorities are just not good enough to catch them. That may
' f2 d9 l0 [! c* {' rbe true, logically, but definitely will not make the case if there is ever a
: v5 v& }% f4 f& p4 ]hearing by the governing body for water sports, FINA, to determine if Ye% r9 j5 F! f* a% ~( r4 B+ }
has doped. To ask whether it is possible to obtain a false negative in a
5 @6 C) Q% n8 q' n) J9 S3 wdrug test looks like a rigged question to me. Of course it is possible:
8 m! f7 F( _( i/ U0 o; Gother than the athlete taking a drug that the test is not designed to detect/ o& D; l2 M6 R
, anyone who has taken quantum 101 will tell you that everything is
1 |# s* N( H {5 N: Bprobabilistic in nature, and so there is a probability that the drug in an( o X, {: c3 g) F& s7 N
athlete’s system could tunnel out right at the moment of the test. A slight( H- L* I4 c, ^+ v) a; w6 O
chance it may be, but should we disregard all test results because of it?1 w' R8 C+ _* e5 U9 C0 q- d
Let’s be practical and reasonable, and accept that the World Anti-Doping) c$ i$ q+ G* {2 l Q' N. C
agency (WADA) is competent at its job. Ye’s urine sample will be stored for6 ]; i, `5 A8 s! n9 A( e' v
eight years after the contest for future testing as technology advances.
9 X; U" P' u' E# Q" S, {Innocent until proven guilty, shouldn’t it be?
- o& J8 m6 K. \ _0 o' H
0 e% e3 P, m1 xSixth, and the last point I would like to make, is that the out-of-) V( D+ {- B& c; t. c
competition drug test is already in effect, which Callaway failed to mention4 L3 I" p& Q# q/ q& F
. As noted in the president of WADA’s press release, drug testing for V" p. \* v+ Q
Olympians began at least six months before the opening of the London
" ^5 B& E* ^. [* f7 Z* R! lOlympics. Furthermore, 107 athletes have been banned from this Olympics for. D; q, [; N+ H
doping. That may be the reason that “everyone will pass at the Olympic/ K2 \1 }8 t; f! \
games. Hardly anyone fails in competition testing” — those who did dope7 g" W# Z: c9 Q1 ^) r
have already been caught and sanctioned. Callaway is free to suggest that a
S: V' h1 ^3 a) H& jplayer could have doped beforehand and fooled the test at the game, but this B! Z0 u, A1 G6 m1 ]
possibility is certainly ruled out for Ye.* D, W6 h( e0 n6 [" [1 W
! h0 x! I' Q' lOver all, even though Callaway did not falsify any data, he did (# \# ?( Q8 G8 t( l% [
intentionally or not) cherry-pick data that, in my view, are far too9 o K0 Y2 I6 C, S$ f) q
suggestive to be fair and unbiased. If you want to cover a story of a0 O4 m. y3 M9 ]9 N% i. F
suspected doping from a scientific point of view, be impartial and provide: A) C) R, m6 p) [- E
all the facts for the reader to judge. You are entitled to your. W# s6 V/ ~$ h0 B- Q8 w! A2 M0 A# ?( y
interpretation of the facts, and the expression thereof in your piece,& O% Z4 @$ }2 W
explicitly or otherwise, but showing only evidence that favours your1 k R; j9 {# j5 [: Q! C; t2 T
argument is hardly good science or journalism. Such an article in a journal7 t# t8 F0 B: @, D" d' v
such as Nature is not an appropriate example of how scientific research or! M" A5 Z- H9 `" Y
reporting should be done. |
|