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发表于 2012-8-14 00:55
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其实比饶毅更牛的回复是 Upenn 的 LAI JIANG
+ x$ L/ a# Y( y* T: K1 A8 u+ A5 _如果是中国长大的,英语能到这种程度真是很不简单。
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5 {% H. M; n( z( X8 ^8 d6 u7 ^, |http://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html
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+ Q" x# F; n$ l" D# ^FROM LAI JIANG, Department of Chemistry, University of Pennsylvania- Z) Y" B! N" N) d& [
5 j2 M7 v8 \* V. N$ aIt is a shame to see Nature — which nearly all scientists, including myself& I& O6 t! [1 r# W. o, P
, regard as one of the most prestigious and influential physical-science
* m* _. V! }5 z* Pmagazines — publish a thinly veiled biased article like this. Granted, this
2 E6 d' L- D0 n) T, V9 p+ Pis not a peer-reviewed scientific article and did not go through the
# f W' o2 u T, v* }# [6 P7 Uscrutiny of picking referees. But to serve as a channel for the general0 E, U+ m/ A% F8 J0 K; @! Y
populace to be in touch with and appreciate science, the authors and editors" s* M1 l; e$ L
should at least present the readers with facts within the proper context,
) d4 P; z8 x7 {$ @' B. b: \9 n( Swhich they blatantly failed to do./ _$ v4 N- R7 y
B, a% g- B+ ?/ }/ {$ U; d/ g
First, to identify Ye’s performance increase, Ewen Callaway compared her
9 _: S3 P# q1 q& ~Olympic 400-metre IM time with her performance at the World Championships in9 [: _$ ]: G$ ?% o/ j
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “6 O7 p5 A! u& X; H0 c3 M& W
anomalous” improvement of around 7 seconds (6.72 s). In fact, her previous
0 S* Y% P* m6 d. p8 V2 Ppersonal best was 4:33.79 at the Asian Games in 2010. This leads to an
. ?$ ]/ e4 n5 {; M; eimprovement of 5.38 seconds. In a sporting event in which 0.1 s can be the- i7 e& i7 c I9 S& B
difference between the gold and silver medal, I see no reason for 5.38 s to! F! p6 @4 W7 b- O: _0 p
be treated as 7 s.) s! a% l& T( S0 D, s8 B7 _
. S. ]6 u& b/ C0 @Second, as previously pointed out, Ye is only 16 years old and her body is
. `- L' q8 `! d0 o- g% Jstill developing. Bettering oneself by 5 seconds over two years may seem/ c/ V) B: H1 J- F0 Q) ?
impossible for an adult swimmer, but it certainly happens among youngsters.
/ |0 u9 V4 M* n! qAn interview with Australian gold medallist Ian Thorpe revealed that his 400
$ U2 F7 {8 e$ A4 w1 D( N9 C: `% k1 g-metre freestyle time improved by 5 seconds between the ages of 15 and 16.
% w2 u4 _- x, L; bFor regular people, including Callaway, it may be hard to imagine what an8 u+ t. u% D; t+ L- V. a
elite swimmer can achieve as he or she matures and undergoes scientific and1 w( v6 L6 q* T! Y* C; S
persistent training. But jumping to the conclusion that it is “anomalous”* W' T* I2 m+ y
based on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.
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% o' k( F+ d: F; TThird, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook) P5 U% } c7 q" C8 Q4 |% J) H, h
example of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in
6 Y) M& N* b3 _the last 50 metres, but Lochte had a huge lead in the first 300 metres, so9 ], F( W* J" z, k& F
he chose not to push himself too hard and to conserve his energy for later$ i( L" A* i% z7 H! J6 h w- ?
events (whether this conforms to the Olympic spirit and the ‘use one’s
! `7 S: i4 q" n: W# g! ?best efforts to win a match’ requirement that the Badminton World$ f2 O% [- t. N0 Q+ a: v% {, p: ~8 R
Federation recently invoked to disqualify four badminton pairs is another G6 P _8 l; H9 n& j; t8 @$ f
topic worth discussing, though probably not in Nature). Ye, on the other6 Y1 V1 Q5 q* S9 Y
hand, was trailing behind after the first 300 metres and relied on freestyle
9 C( `! h$ d. ~1 D' L" |; V, in which she has an edge, to win the race. Failing to mention this% @7 u0 w+ I: Z, u. P
strategic difference, as well as the fact that Lochte is 23.25 seconds/ F) @6 d& h( n, {
faster (4:05.18) than Ye overall, creates the illusion that a woman swam
+ |8 U. ~: i4 g( ]1 Lfaster than the best man in the same sport, which sounds impossible. Putting& w% H7 y/ a( m# d7 ^" {
aside the gender argument, I believe this is still a leading question that' r2 U% r# L2 j. H2 h
implies to the reader that there is something fishy going on.
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Fourth is another example of cherry-picking. In the same event, there are
. Y( }: J) R+ u" t9 K/ D5 X& Jfour male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93
: H' j$ e1 H P, l* f' ps) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s8 P5 k. k% |, C6 X
), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns
( Z7 \! f- ~ z# n8 R) N; l. f7 pout, if we are just talking about the last 50 metres in a 400-metre IM, M9 j U# K7 r1 F4 O
Lochter is not the example I would have used if I were the author. What kind
2 j" \$ X5 D' k1 Lof scientific rigorousness is Callaway trying to demonstrate here? Is it
, l$ W# w6 F- H7 u- D1 qlogical that if Lochter is the champion, we should assume that he leads in
. }( X2 b H! devery split? That would be a terrible way to teach the public how science
6 f- J: Q( ]5 s$ q1 y9 ~- vworks.
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Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and
2 o4 f2 t8 {) T0 S& M+ Gimplies that a drug test cannot rule out the possibility of doping. Is this
3 O7 O0 d4 Q) Qkind of agnosticism what Nature really wants to teach its readers? By that
2 E6 S3 S/ N! |/ O& o1 qstandard, I estimate that at least half of the peer-reviewed scientific% Q/ ?4 F$ u) H6 [0 I, @. d% \. J
papers in Nature should be retracted. How can one convince the editors and% g: M5 q, A' [$ H) E
reviewers that their proposed theory works for every possible case? One( k0 A- D1 q G) M: ]4 n) `7 w
cannot. One chooses to apply the theory to typical examples and to6 G9 a" {/ z s: Z2 N" Q2 T" F
demonstrate that in (hopefully) all scenarios considered, the theory works
4 |) Z2 z3 C2 ]* S; Lto a degree, and that that should warrant publication until a counterexample( O& c/ V3 T3 \- |- d8 \
is found. I could imagine that Callaway has a sceptical mind, which is, K$ i( Z* N' j$ |( J
crucial to scientific thinking, but that would be put to better use if he
9 S' y7 G7 a! O" Vwrote a peer-reviewed paper that discussed the odds of Ye doping on a highly
8 u8 P c% Q1 J/ [. S. Fadvanced, non-detectable drug that the Chinese have come up with in the
w Z+ E' ~) [: ^7 W: J) kpast 4 years (they obviously did not have it in Beijing, otherwise why not& j- k% N" W. v d& a8 u
use it and woo the audience at home?), based on data and rational derivation
6 \( O9 J5 X! p; a. G, c+ Z) C. This article, however, can be interpreted as saying that all athletes are
% ]: @# W% M( v3 T1 edoping and the authorities are just not good enough to catch them. That may
V* `. a" M5 N4 r8 A w& Hbe true, logically, but definitely will not make the case if there is ever a
1 \: o0 H2 v/ fhearing by the governing body for water sports, FINA, to determine if Ye& q, b3 G: f& m- S7 k
has doped. To ask whether it is possible to obtain a false negative in a8 r% G; t& v8 {) ^
drug test looks like a rigged question to me. Of course it is possible:% d+ C% m( i, @0 Z2 B; a
other than the athlete taking a drug that the test is not designed to detect4 W) }1 H$ y* [( t! e) D
, anyone who has taken quantum 101 will tell you that everything is& h( r9 S# g! C" o) ]
probabilistic in nature, and so there is a probability that the drug in an
% d1 ?) A0 v$ l# [# uathlete’s system could tunnel out right at the moment of the test. A slight3 U9 Q1 z' S3 J. X) E7 \
chance it may be, but should we disregard all test results because of it?
% f) t$ N% j: ]: `- u& C6 _' GLet’s be practical and reasonable, and accept that the World Anti-Doping
' S! t) p& f( hagency (WADA) is competent at its job. Ye’s urine sample will be stored for* F4 \. p* {/ h3 x( I a
eight years after the contest for future testing as technology advances.
; z+ V6 ^: `. e7 L4 k+ h; G: bInnocent until proven guilty, shouldn’t it be?
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Sixth, and the last point I would like to make, is that the out-of-& g* h* q+ j% V0 e* r, M
competition drug test is already in effect, which Callaway failed to mention
, c. h, P/ n0 Z* e. u; A, \: s3 Y. As noted in the president of WADA’s press release, drug testing for
9 e* w- S4 ]+ d5 wOlympians began at least six months before the opening of the London
6 n" ~2 f Z$ B' Y) D) ~- c( JOlympics. Furthermore, 107 athletes have been banned from this Olympics for
- T" o7 T9 U9 |, h1 O) v) Y& [, Ydoping. That may be the reason that “everyone will pass at the Olympic
0 X% F3 y2 t5 }7 \. F9 a! m `5 Ygames. Hardly anyone fails in competition testing” — those who did dope* B" Y; ^: F0 c' r) W; {
have already been caught and sanctioned. Callaway is free to suggest that a
0 L( q6 [5 H4 O! Z2 w% bplayer could have doped beforehand and fooled the test at the game, but this
5 Z% \+ H- A9 F8 `0 {6 hpossibility is certainly ruled out for Ye.9 D" ~ C6 Y- [; h
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Over all, even though Callaway did not falsify any data, he did (
! c8 ?# w, w `' ?intentionally or not) cherry-pick data that, in my view, are far too2 D1 R8 i% T0 S% T- ]
suggestive to be fair and unbiased. If you want to cover a story of a
7 v1 H6 O: G9 ?# V# H- n) Jsuspected doping from a scientific point of view, be impartial and provide+ L& M! s. V$ N' G; N* _: G4 [
all the facts for the reader to judge. You are entitled to your
2 V. U# D: I2 p, _) `/ Ninterpretation of the facts, and the expression thereof in your piece,
' l; a* t8 l K8 K* n* q) y/ M' Texplicitly or otherwise, but showing only evidence that favours your
6 T' s% m- M9 Z' y1 G" Hargument is hardly good science or journalism. Such an article in a journal
8 a3 h* B+ k$ Q3 e; Rsuch as Nature is not an appropriate example of how scientific research or2 R+ A" h* Q! O' V- o
reporting should be done. |
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