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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
" d" x$ D2 F* |+ \6 r; |" T, \, G如果是中国长大的,英语能到这种程度真是很不简单。! _# j9 b1 d8 l3 L3 e/ x
/ {2 X3 a* k5 ~5 l- `http://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html* s' l( C9 p, y. P+ G& [
/ u7 }6 y- A, \FROM LAI JIANG, Department of Chemistry, University of Pennsylvania
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; v1 B* w, f) ^5 |It is a shame to see Nature — which nearly all scientists, including myself
1 E* x/ \: ]1 R2 q$ G, regard as one of the most prestigious and influential physical-science3 s: r* [! A1 Z0 G7 P
magazines — publish a thinly veiled biased article like this. Granted, this
' m7 l9 z7 L- Sis not a peer-reviewed scientific article and did not go through the
E6 R |' E7 s" O Nscrutiny of picking referees. But to serve as a channel for the general
- C# w ?9 _7 ~7 _$ ipopulace to be in touch with and appreciate science, the authors and editors
9 u$ U3 u$ ~" L& L1 B1 Kshould at least present the readers with facts within the proper context,: s+ C- g+ M% [* y; G& e; `* N
which they blatantly failed to do.) o4 C1 u# Z7 B5 w9 d. V8 }
* l6 d) F: K) i2 I* y+ k& fFirst, to identify Ye’s performance increase, Ewen Callaway compared her7 M5 {- p; W/ m% o$ H
Olympic 400-metre IM time with her performance at the World Championships in
* [0 C Y/ |$ i1 `+ L2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “
; h+ }6 I' T6 r5 s* Yanomalous” improvement of around 7 seconds (6.72 s). In fact, her previous
: A) { H' M0 B+ Y6 M! N2 L1 L- upersonal best was 4:33.79 at the Asian Games in 2010. This leads to an
+ u9 p6 a( d4 ^0 k* L* y+ `3 Cimprovement of 5.38 seconds. In a sporting event in which 0.1 s can be the
% i5 Y8 f9 [, Y! j, ^5 T# T6 {) Rdifference between the gold and silver medal, I see no reason for 5.38 s to
4 F) A8 E# M9 a8 Q% G4 i2 W" ~$ W/ qbe treated as 7 s.- ?) y8 l2 B' F
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Second, as previously pointed out, Ye is only 16 years old and her body is
' g" g/ p# a! H: P; A& Nstill developing. Bettering oneself by 5 seconds over two years may seem
6 K& H3 }& h, Z, L- u+ Ximpossible for an adult swimmer, but it certainly happens among youngsters.
) h: j: z, e8 U" l& gAn interview with Australian gold medallist Ian Thorpe revealed that his 4004 L9 H+ ~7 A8 T% A
-metre freestyle time improved by 5 seconds between the ages of 15 and 16.
+ X/ d5 ]5 J3 wFor regular people, including Callaway, it may be hard to imagine what an& ?5 @5 b* v, M7 I
elite swimmer can achieve as he or she matures and undergoes scientific and
1 i3 \4 n, R- @; U& }persistent training. But jumping to the conclusion that it is “anomalous”
# I2 q# C# |% Gbased on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.
3 K& ? t0 w6 o- @% U7 J
8 Z+ ] R) r4 c3 [Third, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook
/ n' G) k; t4 F, rexample of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in* ^5 W. h* e$ n9 A- `/ F1 u$ z* N0 R
the last 50 metres, but Lochte had a huge lead in the first 300 metres, so3 s8 @/ f/ A* C# e, S1 d
he chose not to push himself too hard and to conserve his energy for later" D' a$ m; Z6 o" c! g
events (whether this conforms to the Olympic spirit and the ‘use one’s; D9 u% K2 ~5 t$ t
best efforts to win a match’ requirement that the Badminton World! K: a5 ^6 U6 T2 h9 T- K
Federation recently invoked to disqualify four badminton pairs is another
' s; I* h. N0 w/ Ftopic worth discussing, though probably not in Nature). Ye, on the other
! ~. k0 G. X7 jhand, was trailing behind after the first 300 metres and relied on freestyle
6 P' E: X. h# A' Y# Q" N9 a, in which she has an edge, to win the race. Failing to mention this
4 {( X0 u, h3 [( gstrategic difference, as well as the fact that Lochte is 23.25 seconds* z7 o N( z% i, e& ?7 J5 N3 O
faster (4:05.18) than Ye overall, creates the illusion that a woman swam- b( V9 A B4 F/ g Q
faster than the best man in the same sport, which sounds impossible. Putting* M: w4 O# K& d8 p
aside the gender argument, I believe this is still a leading question that- S, T' r& g: i6 p3 u" c
implies to the reader that there is something fishy going on.% F: |( r9 [. q8 F' O+ K; ]
8 T, C3 A$ ]6 o( u) ]; v8 Y3 X" X
Fourth is another example of cherry-picking. In the same event, there are
% w) b, X, Q4 ^four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93
! T- K i- d$ n. Ms) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s
, d: U+ Z$ P& [* X% Q), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns- C4 ] m! {( F2 Q, ^
out, if we are just talking about the last 50 metres in a 400-metre IM,& q1 S* R: g' ]! v+ Q# Q
Lochter is not the example I would have used if I were the author. What kind
8 r$ G9 w ], T$ Y# Yof scientific rigorousness is Callaway trying to demonstrate here? Is it; J$ _% M) D( P- i7 b6 F
logical that if Lochter is the champion, we should assume that he leads in0 Z0 p% N: u" c" k; ~! @5 O
every split? That would be a terrible way to teach the public how science
! H' [6 _5 k- Tworks.
2 A, v0 O" X7 `* u& x' O) ^: D( i0 B/ }/ @3 R7 |2 |2 b% ?' S5 T
Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and
* b9 d0 F6 S0 j. [* y5 Y' P! A: \! _implies that a drug test cannot rule out the possibility of doping. Is this. N) d- s7 l1 c
kind of agnosticism what Nature really wants to teach its readers? By that
: `9 |* N$ z! R/ o; Y/ Vstandard, I estimate that at least half of the peer-reviewed scientific
: m" x9 F# t* Fpapers in Nature should be retracted. How can one convince the editors and
, G& |/ ~4 D D' y7 ] \' Z" Qreviewers that their proposed theory works for every possible case? One$ ~& H# c' M$ G: Q
cannot. One chooses to apply the theory to typical examples and to( L$ j N$ } S% I+ s$ w
demonstrate that in (hopefully) all scenarios considered, the theory works$ \6 Z8 [! _9 F2 d( n7 F
to a degree, and that that should warrant publication until a counterexample$ G7 l! L* R7 u+ d9 B ^' P# A
is found. I could imagine that Callaway has a sceptical mind, which is
( k9 @; X6 U0 J4 @% Ecrucial to scientific thinking, but that would be put to better use if he
0 l! M0 F5 R m9 K, wwrote a peer-reviewed paper that discussed the odds of Ye doping on a highly( f t; T! L7 e' A" B
advanced, non-detectable drug that the Chinese have come up with in the' U$ \; d* F7 m. I6 k) m, M: P
past 4 years (they obviously did not have it in Beijing, otherwise why not2 ], t8 i# C" B z: J# v, j. a
use it and woo the audience at home?), based on data and rational derivation3 b( A( U$ v h7 c { H
. This article, however, can be interpreted as saying that all athletes are. [# g [5 V* T* b/ Y/ T
doping and the authorities are just not good enough to catch them. That may
4 @( z* V. J% J$ X2 [be true, logically, but definitely will not make the case if there is ever a& S) [7 g! q/ X. `- _9 R7 |, T
hearing by the governing body for water sports, FINA, to determine if Ye
( L5 [% B0 @& G/ Z: R( Lhas doped. To ask whether it is possible to obtain a false negative in a
* |5 e$ V$ f3 e6 R' \; q* R3 [( adrug test looks like a rigged question to me. Of course it is possible:
4 m+ E, W3 z, mother than the athlete taking a drug that the test is not designed to detect
) e, @ V0 s, |' C- K, anyone who has taken quantum 101 will tell you that everything is/ t% P0 {- f8 V: d. x
probabilistic in nature, and so there is a probability that the drug in an) Y- ?. M5 C7 ^* ?5 b& o
athlete’s system could tunnel out right at the moment of the test. A slight
\1 p4 n. T& @6 e6 ^chance it may be, but should we disregard all test results because of it?
/ s+ C9 @9 g) D; _ pLet’s be practical and reasonable, and accept that the World Anti-Doping
8 \* D% l* n ]1 }# u5 Kagency (WADA) is competent at its job. Ye’s urine sample will be stored for6 F4 p; d/ P& A+ E9 Q7 B3 {
eight years after the contest for future testing as technology advances.4 a3 f( o( m: B% l% C0 {
Innocent until proven guilty, shouldn’t it be?. w% i3 X# o( H
; f, I! p# Z( h3 ^* P, VSixth, and the last point I would like to make, is that the out-of-/ L. \+ t% q- S, n8 X
competition drug test is already in effect, which Callaway failed to mention% x$ R7 [6 D4 Q' q" H: B" }
. As noted in the president of WADA’s press release, drug testing for$ p, B* Q+ {" J* F0 r2 b
Olympians began at least six months before the opening of the London
4 |+ Y* t, k+ [! X8 h: aOlympics. Furthermore, 107 athletes have been banned from this Olympics for
& `+ P- D! V* adoping. That may be the reason that “everyone will pass at the Olympic
1 l, z) R! Q3 S7 K( \- Y5 Tgames. Hardly anyone fails in competition testing” — those who did dope
% a3 z8 _5 l& yhave already been caught and sanctioned. Callaway is free to suggest that a
8 b) V' D+ ~ c) S+ K- R: \player could have doped beforehand and fooled the test at the game, but this
9 t6 t; x, x6 I) t. `possibility is certainly ruled out for Ye.0 d; t6 Y1 @+ [2 p0 }
; `) L1 r+ G4 v( v' ], n- H" eOver all, even though Callaway did not falsify any data, he did (
- `: w% C1 s2 ^- D5 Uintentionally or not) cherry-pick data that, in my view, are far too4 [9 c! M7 u5 p8 b
suggestive to be fair and unbiased. If you want to cover a story of a0 J c( V y; s8 C; b, v
suspected doping from a scientific point of view, be impartial and provide" z1 v6 e, {0 O, ~- s) |
all the facts for the reader to judge. You are entitled to your- g, n1 G+ K/ Z, ` u. P) e$ c
interpretation of the facts, and the expression thereof in your piece,6 A$ r, K' I3 Q& b
explicitly or otherwise, but showing only evidence that favours your
8 A- | L0 w$ |2 z! C9 d2 hargument is hardly good science or journalism. Such an article in a journal
2 g/ M( u( w! l: c q9 c. N ksuch as Nature is not an appropriate example of how scientific research or) ~. R8 R( Q X+ ^" H: q
reporting should be done. |
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