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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& K1 U# k) W% W" E8 F5 c
如果是中国长大的,英语能到这种程度真是很不简单。( t; k9 M' \ Q N: f
' s* E/ n7 H, \& r' dhttp://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html
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FROM LAI JIANG, Department of Chemistry, University of Pennsylvania
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5 Y2 t) R* N! Z& k' ^5 ZIt is a shame to see Nature — which nearly all scientists, including myself) F. }; N- R1 Q( ^, ]
, regard as one of the most prestigious and influential physical-science) E9 p( `2 ]4 B2 {
magazines — publish a thinly veiled biased article like this. Granted, this. x. S9 J; ^8 g* A: p' {
is not a peer-reviewed scientific article and did not go through the' v/ p+ `7 g) ^" d0 y% [
scrutiny of picking referees. But to serve as a channel for the general
! U5 W( s6 Q ~# r7 Q4 Cpopulace to be in touch with and appreciate science, the authors and editors
, D# v- b! C! j0 ?' M7 O+ Rshould at least present the readers with facts within the proper context,
4 i8 [1 B* S& `" ?which they blatantly failed to do.
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First, to identify Ye’s performance increase, Ewen Callaway compared her! H+ {0 s b4 M v; _" g; z
Olympic 400-metre IM time with her performance at the World Championships in
* N5 V, y& g9 x2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “
* G- q/ t: w$ c& |1 l$ tanomalous” improvement of around 7 seconds (6.72 s). In fact, her previous8 H6 [, \- w$ ~4 T
personal best was 4:33.79 at the Asian Games in 2010. This leads to an! R' N* O; f6 F( o) h
improvement of 5.38 seconds. In a sporting event in which 0.1 s can be the
$ t. A: E, c7 z" O5 @" rdifference between the gold and silver medal, I see no reason for 5.38 s to1 ]% Z+ q! I& M
be treated as 7 s., @! O3 L g9 C0 }6 O- b/ B- B
. B: S- q/ {0 `8 c) g9 HSecond, as previously pointed out, Ye is only 16 years old and her body is( @+ j+ K) c7 E, |5 |% L( @
still developing. Bettering oneself by 5 seconds over two years may seem
& h8 Z& w4 {5 S" Q8 K7 limpossible for an adult swimmer, but it certainly happens among youngsters.$ d( W6 L7 [) u. {$ d
An interview with Australian gold medallist Ian Thorpe revealed that his 400- Y$ I m( ^8 k
-metre freestyle time improved by 5 seconds between the ages of 15 and 16./ t& Y& G, [: S! [- `9 b
For regular people, including Callaway, it may be hard to imagine what an
) r/ L+ |" u2 Q" @ Z1 }. V2 oelite swimmer can achieve as he or she matures and undergoes scientific and/ {1 M1 |$ |$ c( t$ S- z% H J. h
persistent training. But jumping to the conclusion that it is “anomalous”- H" H* Z: P! G) m9 i! o; Z" g) c
based on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.
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. u) a# i2 ^" Y' a) R4 y7 iThird, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook
0 n' g: s9 o4 z! t9 @0 B6 `example of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in
7 k4 ]: V) b; |' uthe last 50 metres, but Lochte had a huge lead in the first 300 metres, so, R0 v: p. `" \
he chose not to push himself too hard and to conserve his energy for later: W; c3 v q/ R
events (whether this conforms to the Olympic spirit and the ‘use one’s
: F) U4 n' W" U1 ]1 F0 Ybest efforts to win a match’ requirement that the Badminton World3 C* q& V2 L% X4 V
Federation recently invoked to disqualify four badminton pairs is another
0 b. a2 h W5 }- Gtopic worth discussing, though probably not in Nature). Ye, on the other* r/ G) C0 x6 j9 C
hand, was trailing behind after the first 300 metres and relied on freestyle3 \+ o9 B2 i; w) u) V
, in which she has an edge, to win the race. Failing to mention this
6 K' g! p# i" h% Q- Nstrategic difference, as well as the fact that Lochte is 23.25 seconds
/ `$ K' J7 W& I$ a) tfaster (4:05.18) than Ye overall, creates the illusion that a woman swam
3 j1 T: B8 f9 d+ p: @faster than the best man in the same sport, which sounds impossible. Putting' R2 @6 J3 P; c0 e5 u0 H7 l
aside the gender argument, I believe this is still a leading question that4 U8 Q$ T: P0 H# l4 i: B
implies to the reader that there is something fishy going on.5 S# C7 C' k" i0 `' t
% G! b/ b, d; CFourth is another example of cherry-picking. In the same event, there are
, Z! r! v) C% d- H: a8 ]four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.932 }1 N0 t% `- n+ b6 j, V
s) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s! L H# K( l, }$ R
), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns5 _. D- Z# M# R4 ?: Q
out, if we are just talking about the last 50 metres in a 400-metre IM,
0 ?8 |" A' w1 qLochter is not the example I would have used if I were the author. What kind4 e4 N' B) j% d/ p# S
of scientific rigorousness is Callaway trying to demonstrate here? Is it
0 N# F; K& ~; d2 hlogical that if Lochter is the champion, we should assume that he leads in- I5 S4 M. d2 N S" T3 Q
every split? That would be a terrible way to teach the public how science4 C ^ z: M8 j$ t
works." k/ @0 p7 }9 }4 l; E( j3 ^
6 n' h2 p2 T) i, g# cFifth is the issue I oppose the most. Callaway quotes Ross Tucker and6 @. W% R1 r5 y& }& k4 l
implies that a drug test cannot rule out the possibility of doping. Is this
" o- @5 \, E6 z( ekind of agnosticism what Nature really wants to teach its readers? By that
7 n. H1 h$ v q' G% z! a/ Lstandard, I estimate that at least half of the peer-reviewed scientific
$ X' d" }$ V2 D+ F* i# h) |$ ]papers in Nature should be retracted. How can one convince the editors and
' Z2 Q8 W8 ?' U* Zreviewers that their proposed theory works for every possible case? One R* j2 W6 V9 }/ {+ m8 b
cannot. One chooses to apply the theory to typical examples and to
1 E$ M U- L; M: [/ T$ n2 Jdemonstrate that in (hopefully) all scenarios considered, the theory works4 f: |* W6 @6 X% Z2 R# k8 S& B
to a degree, and that that should warrant publication until a counterexample
8 T# \+ T- n' k, Z" ?! kis found. I could imagine that Callaway has a sceptical mind, which is$ g& Y: \$ h7 o/ R+ A+ m
crucial to scientific thinking, but that would be put to better use if he
7 y, d3 @ a! i$ A/ s0 c% |3 gwrote a peer-reviewed paper that discussed the odds of Ye doping on a highly
& r" K. M4 D' Z7 a9 Kadvanced, non-detectable drug that the Chinese have come up with in the, }9 u; t' |) _3 U. ]# g! |
past 4 years (they obviously did not have it in Beijing, otherwise why not4 N, g0 i6 b" t& o2 A) m
use it and woo the audience at home?), based on data and rational derivation
. W: U# g1 U* M* C$ g. }+ J. This article, however, can be interpreted as saying that all athletes are
& P/ E2 H$ M1 {) }doping and the authorities are just not good enough to catch them. That may
# p" ?$ e& x- b* l" Pbe true, logically, but definitely will not make the case if there is ever a
3 f) X4 l. W# Fhearing by the governing body for water sports, FINA, to determine if Ye
8 e+ h; f* W$ Z0 ~has doped. To ask whether it is possible to obtain a false negative in a
2 l. r& i: R4 w1 D! H. y0 zdrug test looks like a rigged question to me. Of course it is possible:
2 I6 R+ M4 K- R8 F, h- X% \+ sother than the athlete taking a drug that the test is not designed to detect
7 Y5 ]6 F k+ L# y9 r, anyone who has taken quantum 101 will tell you that everything is, W& x$ X9 a2 ~' I! G! W: Z
probabilistic in nature, and so there is a probability that the drug in an L4 P. a3 H) M
athlete’s system could tunnel out right at the moment of the test. A slight/ x0 V6 o/ e+ z& ?1 z
chance it may be, but should we disregard all test results because of it?
+ p! h M- z7 q+ h# iLet’s be practical and reasonable, and accept that the World Anti-Doping7 u- V2 T9 q2 ]7 [$ i; l
agency (WADA) is competent at its job. Ye’s urine sample will be stored for
& r) d4 K! D" K C: deight years after the contest for future testing as technology advances.. V$ L0 E4 A) k1 B& [ T
Innocent until proven guilty, shouldn’t it be?
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# j5 `5 q3 [, V T( D* n. }Sixth, and the last point I would like to make, is that the out-of-
5 R3 `) z* ?+ qcompetition drug test is already in effect, which Callaway failed to mention1 | ~' r8 K8 H; [
. As noted in the president of WADA’s press release, drug testing for, X# R9 [* J8 d8 \' W
Olympians began at least six months before the opening of the London
3 [; B# q/ z# AOlympics. Furthermore, 107 athletes have been banned from this Olympics for
! E% ~, \0 t8 {3 n o- |- gdoping. That may be the reason that “everyone will pass at the Olympic
' e6 s4 @! e7 }0 t8 G6 ~7 ygames. Hardly anyone fails in competition testing” — those who did dope1 ^0 y. C& j4 [/ l3 c! i7 w2 f, z
have already been caught and sanctioned. Callaway is free to suggest that a7 f P' I0 N9 g
player could have doped beforehand and fooled the test at the game, but this
% h& p/ W+ G2 V" ]5 Q. Spossibility is certainly ruled out for Ye.: U; y1 v1 J3 w: y3 F$ d
c8 z4 \+ W: c: K, O5 b& O" F* h+ ~Over all, even though Callaway did not falsify any data, he did ($ i8 Y g# g3 C+ I8 K
intentionally or not) cherry-pick data that, in my view, are far too
$ f1 J: l/ t+ |7 A! q vsuggestive to be fair and unbiased. If you want to cover a story of a' B$ H% }, m7 R* V0 N8 F7 [: r7 {
suspected doping from a scientific point of view, be impartial and provide
9 y( w7 E8 }6 t J' s. M" T. F: yall the facts for the reader to judge. You are entitled to your4 v/ _& {# z, w
interpretation of the facts, and the expression thereof in your piece,
& [, T9 I3 p" V2 E" xexplicitly or otherwise, but showing only evidence that favours your9 D7 U/ h9 o0 y7 X
argument is hardly good science or journalism. Such an article in a journal
4 l* p$ ]) P" z5 f+ vsuch as Nature is not an appropriate example of how scientific research or D7 P5 f1 n- j3 ^$ r3 ]( G4 H! w
reporting should be done. |
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