 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
4 x$ F0 g5 t( ~# q- ? s如果是中国长大的,英语能到这种程度真是很不简单。
1 P" w" B; H9 d% K$ K% ]" k
, ?5 T: G1 X' f N7 P3 r6 [) @http://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html
/ d5 A7 K$ t" }0 c6 Q( T" a: z; g1 ^" N8 c* h
FROM LAI JIANG, Department of Chemistry, University of Pennsylvania
, j- k4 b, v: N& \3 P. B& W9 e: g. h5 @* L/ g$ y
It is a shame to see Nature — which nearly all scientists, including myself' W3 a7 e$ t4 c* f! W
, regard as one of the most prestigious and influential physical-science
% A; j8 C S6 g5 d% N. Vmagazines — publish a thinly veiled biased article like this. Granted, this
7 k* [% p) V% V$ L$ o* D. Qis not a peer-reviewed scientific article and did not go through the
5 F$ s/ _6 m" O& {, n- Bscrutiny of picking referees. But to serve as a channel for the general
* u+ Y1 q" \5 C7 p- Ypopulace to be in touch with and appreciate science, the authors and editors
/ Z& f6 |$ \2 G0 ^/ |+ f( _should at least present the readers with facts within the proper context,2 f0 n! g/ @, k0 c* d
which they blatantly failed to do.
8 L1 C3 E2 e6 T; a" u2 ?: A7 u) K
! R; ?8 D) z' B/ R k& uFirst, to identify Ye’s performance increase, Ewen Callaway compared her
$ @6 }# T6 P& ?" d) q: pOlympic 400-metre IM time with her performance at the World Championships in
6 ]8 e+ I" \+ j2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “
# X$ G8 L) q/ `7 [0 Zanomalous” improvement of around 7 seconds (6.72 s). In fact, her previous
! E% }0 E0 I6 Q# x: C3 epersonal best was 4:33.79 at the Asian Games in 2010. This leads to an
+ ~* J; A% ] W) D* \% wimprovement of 5.38 seconds. In a sporting event in which 0.1 s can be the7 D! `0 q0 ]3 r! L' O4 z$ _! E
difference between the gold and silver medal, I see no reason for 5.38 s to
) {. u. Z, x) e' t' r; P; ibe treated as 7 s. M" T/ H/ A- _- q" x: ^
" C" \! K0 s ^. z* N4 Q2 E% J
Second, as previously pointed out, Ye is only 16 years old and her body is
9 @; g1 F% d, Nstill developing. Bettering oneself by 5 seconds over two years may seem, c3 |4 V: i' `. j7 a$ M
impossible for an adult swimmer, but it certainly happens among youngsters.
, F+ K- P3 \; E1 qAn interview with Australian gold medallist Ian Thorpe revealed that his 400/ w- T4 F+ P$ P ~7 Y2 p1 |* J
-metre freestyle time improved by 5 seconds between the ages of 15 and 16.# }% ^* G9 i' K3 G
For regular people, including Callaway, it may be hard to imagine what an
+ E: V6 Y9 k$ m) Lelite swimmer can achieve as he or she matures and undergoes scientific and
/ R1 ]1 w# v2 y6 b. ppersistent training. But jumping to the conclusion that it is “anomalous”
& Y9 C' Z& Q$ C0 v3 [* ]: h6 vbased on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.
! m' b) V, X1 F( S; S, K/ {) ^, E, x3 d
Third, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook
6 h# \, d0 e t* w0 {1 w, zexample of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in
; [, |4 Q6 V, g- x8 qthe last 50 metres, but Lochte had a huge lead in the first 300 metres, so$ `- s; Q& V% ^) O' A: t
he chose not to push himself too hard and to conserve his energy for later6 ~. I$ ?6 z6 l
events (whether this conforms to the Olympic spirit and the ‘use one’s ?8 i! h' r1 C
best efforts to win a match’ requirement that the Badminton World
; q! H% x0 Y5 KFederation recently invoked to disqualify four badminton pairs is another% g4 j$ `" X6 y4 S* q
topic worth discussing, though probably not in Nature). Ye, on the other
0 F$ f3 G: i' R/ k% u7 b2 O* Thand, was trailing behind after the first 300 metres and relied on freestyle
4 E6 H8 M+ y/ {" m0 o, in which she has an edge, to win the race. Failing to mention this0 p( X5 H: y, `2 O: r9 @6 e+ D
strategic difference, as well as the fact that Lochte is 23.25 seconds
* C' D% ~: D+ ^3 y; U% @faster (4:05.18) than Ye overall, creates the illusion that a woman swam
/ Z8 U a- N u, ?+ B' k5 a1 Z) Z: {/ s* Efaster than the best man in the same sport, which sounds impossible. Putting
9 C" `# o: {9 ]/ T* G7 L- paside the gender argument, I believe this is still a leading question that
* M% l' B/ K* v' simplies to the reader that there is something fishy going on.
1 n e* f: ]; u r
& X0 D% h+ o# _; oFourth is another example of cherry-picking. In the same event, there are" J$ z% B7 {& a
four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93
( r% R7 `# ]; |2 I2 B* z5 C* ?s) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s: j' Q+ M: a: t9 S0 S9 R2 r
), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns( q5 E ]" o, y9 ?; `* v
out, if we are just talking about the last 50 metres in a 400-metre IM,
# B7 [1 _3 w$ l1 iLochter is not the example I would have used if I were the author. What kind: t7 r7 Z" ^- T, V
of scientific rigorousness is Callaway trying to demonstrate here? Is it
) i) |) X/ Q* l! B8 i6 o7 _logical that if Lochter is the champion, we should assume that he leads in1 N9 M; O4 T: ? g) o1 X% E
every split? That would be a terrible way to teach the public how science* {/ i3 [! P. O! e5 z+ u) i
works.
1 W) a6 E+ r& r" {$ z$ A# i* @
: s( ~1 D: w8 LFifth is the issue I oppose the most. Callaway quotes Ross Tucker and8 ]& q0 {6 [, }) k- y7 }% H& o4 @
implies that a drug test cannot rule out the possibility of doping. Is this" W9 y7 b7 `+ @: r. v# [ P' N
kind of agnosticism what Nature really wants to teach its readers? By that
6 X1 h' ?+ z+ X8 O) p6 [0 rstandard, I estimate that at least half of the peer-reviewed scientific
& {: x6 n, q! D- ipapers in Nature should be retracted. How can one convince the editors and( |: U! W3 \" m1 u; q$ t1 q, C
reviewers that their proposed theory works for every possible case? One
: _: `8 f8 l+ ncannot. One chooses to apply the theory to typical examples and to
# n0 O* a( T7 \demonstrate that in (hopefully) all scenarios considered, the theory works x4 n6 ?. a: ^0 N& a( c# S
to a degree, and that that should warrant publication until a counterexample( y: G; i: I1 ]( L2 ?) f4 p+ l2 l. d
is found. I could imagine that Callaway has a sceptical mind, which is. X, ~% u# K* S$ k( g
crucial to scientific thinking, but that would be put to better use if he
9 y3 d9 {5 y( O* U, Q9 jwrote a peer-reviewed paper that discussed the odds of Ye doping on a highly
$ S0 ~; J: S7 H: a$ ^advanced, non-detectable drug that the Chinese have come up with in the
' B. Y( C: D7 }6 k& }past 4 years (they obviously did not have it in Beijing, otherwise why not
+ W8 J* }& x9 u+ _7 E, [use it and woo the audience at home?), based on data and rational derivation
0 e" R7 K8 K6 Z. E& v+ q. This article, however, can be interpreted as saying that all athletes are1 x0 K4 I0 J3 i9 O: v8 \
doping and the authorities are just not good enough to catch them. That may
: V4 I0 Y8 l% f7 t" f) {& zbe true, logically, but definitely will not make the case if there is ever a0 Y% H' T% d _3 _6 I1 l3 r
hearing by the governing body for water sports, FINA, to determine if Ye
/ L5 u3 N1 {6 B8 Jhas doped. To ask whether it is possible to obtain a false negative in a, ^5 }# n) C" s& p1 R% k* M6 ]
drug test looks like a rigged question to me. Of course it is possible:! z: D# f, P4 z6 f
other than the athlete taking a drug that the test is not designed to detect
" _" a5 }1 s& ]; q! K y. ~' v, anyone who has taken quantum 101 will tell you that everything is
9 H, {$ s$ j% B" v' R6 G, l8 u) lprobabilistic in nature, and so there is a probability that the drug in an1 T& p. K$ X9 i2 u& S! C
athlete’s system could tunnel out right at the moment of the test. A slight
. T( u2 S, ?: V N: N; t, v7 N- Mchance it may be, but should we disregard all test results because of it?
7 z2 f$ N& m6 ]. _Let’s be practical and reasonable, and accept that the World Anti-Doping
$ K6 v$ L6 o) e. w* M- b2 Nagency (WADA) is competent at its job. Ye’s urine sample will be stored for( o5 X u7 g: q2 k* l1 w
eight years after the contest for future testing as technology advances.
% k* m! V7 A# H1 JInnocent until proven guilty, shouldn’t it be?) q4 d7 ], q& v X$ d
U3 }2 y4 X$ \9 o i
Sixth, and the last point I would like to make, is that the out-of- z! R# ]4 P3 ~9 r+ b. R, l
competition drug test is already in effect, which Callaway failed to mention
- ^% M9 \' i6 D9 M& b. As noted in the president of WADA’s press release, drug testing for
, f& C+ r! h4 J" E, c" JOlympians began at least six months before the opening of the London
5 j" M5 b- c( \ lOlympics. Furthermore, 107 athletes have been banned from this Olympics for+ x/ M* K7 j; N
doping. That may be the reason that “everyone will pass at the Olympic
/ f0 g4 e2 Q: D; j1 bgames. Hardly anyone fails in competition testing” — those who did dope6 Q) X' j" D+ l z% M
have already been caught and sanctioned. Callaway is free to suggest that a, r0 P' ]0 b0 D# T/ _5 F
player could have doped beforehand and fooled the test at the game, but this
3 ^; c7 U% M+ \/ X* ypossibility is certainly ruled out for Ye.
8 }' n4 U) s4 k I# b- `9 D; h) @ T$ O# X4 k$ u$ N
Over all, even though Callaway did not falsify any data, he did (" k: C4 r7 E+ J. Y( A G
intentionally or not) cherry-pick data that, in my view, are far too
, i. D' n4 K4 m$ k; Tsuggestive to be fair and unbiased. If you want to cover a story of a
, x/ `; h% n$ p4 t; ssuspected doping from a scientific point of view, be impartial and provide6 L9 d- F* F& V8 l/ {- r
all the facts for the reader to judge. You are entitled to your
/ y3 L8 j3 R1 t# j, Pinterpretation of the facts, and the expression thereof in your piece,
) t4 _+ z1 M5 q r( uexplicitly or otherwise, but showing only evidence that favours your
' Y+ S1 A# }8 U* E0 Iargument is hardly good science or journalism. Such an article in a journal
2 k9 K+ n: E5 \. v& Ysuch as Nature is not an appropriate example of how scientific research or3 v" ?$ U- w" X+ N- |+ f, V
reporting should be done. |
|