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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 JIANG8 Z0 Q8 F- u+ O0 ?
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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http://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html
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; _9 H4 b- h# }4 \* N2 dFROM LAI JIANG, Department of Chemistry, University of Pennsylvania! w/ |+ p: ` E) f( f
; A- k9 Q- J* }" \# uIt is a shame to see Nature — which nearly all scientists, including myself
, d4 N$ s5 _5 l9 j* b* O/ ^, regard as one of the most prestigious and influential physical-science. w0 ]. i8 M1 G4 b* d" y% G
magazines — publish a thinly veiled biased article like this. Granted, this
x! z/ ?) l: W2 n" T; Yis not a peer-reviewed scientific article and did not go through the9 }! h0 K6 E$ |/ a
scrutiny of picking referees. But to serve as a channel for the general
; X6 E( ^# L" z: Opopulace to be in touch with and appreciate science, the authors and editors
8 B( [" p( d* f# A) qshould at least present the readers with facts within the proper context,
+ L5 G9 i$ g s2 ywhich they blatantly failed to do.& Z& U1 _; i3 X: M' g5 b. C
2 L8 R* |$ O3 s. ^ R9 [First, to identify Ye’s performance increase, Ewen Callaway compared her
' v# g4 o" I$ kOlympic 400-metre IM time with her performance at the World Championships in1 @6 H9 p! x8 @7 h/ L' E
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “
- _7 p% m# L$ h) Janomalous” improvement of around 7 seconds (6.72 s). In fact, her previous2 H% O! c. U+ E! _9 L5 p
personal best was 4:33.79 at the Asian Games in 2010. This leads to an# b. \8 ~% ~6 P% N7 Q B1 ?
improvement of 5.38 seconds. In a sporting event in which 0.1 s can be the
2 z m- I0 o, J) C( |4 s) Adifference between the gold and silver medal, I see no reason for 5.38 s to
I/ m8 c2 N' P/ V+ k: F" _* Ube treated as 7 s.5 G2 A, C1 P- |" N3 t0 A$ N
6 S! N9 m f2 u& Y2 J, oSecond, as previously pointed out, Ye is only 16 years old and her body is$ I- N& p l- j" y9 L. a
still developing. Bettering oneself by 5 seconds over two years may seem
) h3 Q4 {! x' g5 }( `! k; |% ?" |impossible for an adult swimmer, but it certainly happens among youngsters.
! ^ @, y4 e- w& C$ u/ @ t7 jAn interview with Australian gold medallist Ian Thorpe revealed that his 4000 g; H7 A, R5 ^/ ]
-metre freestyle time improved by 5 seconds between the ages of 15 and 16.; N& b- ~; B+ E" l: c. p* x
For regular people, including Callaway, it may be hard to imagine what an) X) M) _3 E- T0 ]9 U2 N r
elite swimmer can achieve as he or she matures and undergoes scientific and
' o4 i3 `- J; Z# Epersistent training. But jumping to the conclusion that it is “anomalous”, j. a! ^' a+ F
based on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.7 J2 c" \; ]7 D/ ^
6 e1 |( K; C7 E9 LThird, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook
& D( M" U! g+ o) `. {9 S: M9 Aexample of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in
, `+ i. U1 R% |$ o1 Jthe last 50 metres, but Lochte had a huge lead in the first 300 metres, so
6 r3 a, i. U5 S" b4 r1 S1 K& uhe chose not to push himself too hard and to conserve his energy for later
" K4 m7 F( Q# p- m2 ~) X+ y; nevents (whether this conforms to the Olympic spirit and the ‘use one’s
: ^0 [' p; b1 o1 H( q5 M" Fbest efforts to win a match’ requirement that the Badminton World6 p3 Z! ^/ s' `/ ^/ e" T$ u/ U
Federation recently invoked to disqualify four badminton pairs is another
7 k# o7 Z4 o/ e7 [topic worth discussing, though probably not in Nature). Ye, on the other
4 x# ?8 O8 F1 m! T! M. l" |& lhand, was trailing behind after the first 300 metres and relied on freestyle' I6 ~+ G; u8 {; }4 l6 x4 r2 n) R: ~, B6 m
, in which she has an edge, to win the race. Failing to mention this- F+ x6 x( _) Q2 e1 B1 S- b
strategic difference, as well as the fact that Lochte is 23.25 seconds$ n3 t$ k; ~7 w- i5 u- I* d2 u: W: O1 Z
faster (4:05.18) than Ye overall, creates the illusion that a woman swam
+ s) V8 \8 }2 S: p" Ofaster than the best man in the same sport, which sounds impossible. Putting d/ J5 @/ P4 D- b; c( o K
aside the gender argument, I believe this is still a leading question that9 h4 l6 P( q% F& j
implies to the reader that there is something fishy going on./ e! F% ~1 D, s7 U5 i1 I
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Fourth is another example of cherry-picking. In the same event, there are: j( k" n, s) J' K% P4 h$ s
four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93
1 `4 q/ S% t7 e# X* C9 W; n. {, rs) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s& _) U: Z9 n$ @$ Q: a4 ^
), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns* f# Y+ f# {2 n9 q6 H; q
out, if we are just talking about the last 50 metres in a 400-metre IM,
4 |. a$ _0 n' z" n, y4 eLochter is not the example I would have used if I were the author. What kind- S0 b- k8 d2 g+ f, g* V
of scientific rigorousness is Callaway trying to demonstrate here? Is it" F! ~, b, O9 _& z3 q
logical that if Lochter is the champion, we should assume that he leads in
! Z2 J; R+ k3 [# L1 v$ [every split? That would be a terrible way to teach the public how science1 M+ s, w" r. O" q
works.
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$ Y' u+ {& r z3 n' g6 k- mFifth is the issue I oppose the most. Callaway quotes Ross Tucker and y: N4 B& _% Q; e7 M" F& P0 [. K4 n
implies that a drug test cannot rule out the possibility of doping. Is this
5 Y, j, \7 Z# akind of agnosticism what Nature really wants to teach its readers? By that
/ `4 _6 H! c0 |5 Istandard, I estimate that at least half of the peer-reviewed scientific
; P9 h% |' V4 u' S4 Q2 j( |2 Jpapers in Nature should be retracted. How can one convince the editors and7 T$ s8 @1 K4 e
reviewers that their proposed theory works for every possible case? One
- T) M- y. p S* S xcannot. One chooses to apply the theory to typical examples and to
8 F4 V; ~, \9 x4 O) p0 V9 jdemonstrate that in (hopefully) all scenarios considered, the theory works) H* g6 ]6 x+ f, u" E
to a degree, and that that should warrant publication until a counterexample y: [+ f# F* L$ ~ k
is found. I could imagine that Callaway has a sceptical mind, which is/ @! ~( B! j. |) D+ l
crucial to scientific thinking, but that would be put to better use if he
* `+ a- T, p4 D: k+ ]; zwrote a peer-reviewed paper that discussed the odds of Ye doping on a highly
2 U3 c! D |9 ?, Q. l1 i7 o. Gadvanced, non-detectable drug that the Chinese have come up with in the @, n) S- y; T1 e% @
past 4 years (they obviously did not have it in Beijing, otherwise why not4 ^- r# [+ v1 }+ y8 G. v
use it and woo the audience at home?), based on data and rational derivation; A$ Z. _ u; A V$ [4 m3 [
. This article, however, can be interpreted as saying that all athletes are
: L$ J& H! E) N) p v, Fdoping and the authorities are just not good enough to catch them. That may
7 ~6 [/ K* w1 h% S) A, q% gbe true, logically, but definitely will not make the case if there is ever a! e: }3 e" s+ Y! ?
hearing by the governing body for water sports, FINA, to determine if Ye
K+ q: P8 \# \3 ]3 a3 r s" D' L) Rhas doped. To ask whether it is possible to obtain a false negative in a
! E) k' E3 J* b' I3 L0 |drug test looks like a rigged question to me. Of course it is possible:7 D2 G. x% K/ l( m$ j$ q- ]0 i* P: s
other than the athlete taking a drug that the test is not designed to detect% A# u' t" @# k0 l7 e1 B
, anyone who has taken quantum 101 will tell you that everything is
4 [7 y5 x: f7 c. }) E! uprobabilistic in nature, and so there is a probability that the drug in an2 t& M) w- D4 v* }! M9 |( Y
athlete’s system could tunnel out right at the moment of the test. A slight8 h, {* a. [ ]8 S
chance it may be, but should we disregard all test results because of it?
8 @3 h- z, N$ \1 f* zLet’s be practical and reasonable, and accept that the World Anti-Doping3 w% x; X0 Q- I4 A) o# ]
agency (WADA) is competent at its job. Ye’s urine sample will be stored for
. D9 \8 ^* N# P, q* |eight years after the contest for future testing as technology advances.7 s7 C: y% z* F" G) E6 s, W/ L& R# ]$ L
Innocent until proven guilty, shouldn’t it be?
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$ f% B: N' w. s* y+ DSixth, and the last point I would like to make, is that the out-of-
7 u8 ^) K; e: h% g! _0 L1 Tcompetition drug test is already in effect, which Callaway failed to mention
! r9 V9 t, J2 C. As noted in the president of WADA’s press release, drug testing for% A* B. s. z5 r4 p/ b: L! N3 O
Olympians began at least six months before the opening of the London
, | c9 o- C- MOlympics. Furthermore, 107 athletes have been banned from this Olympics for% G- }% Z; X6 z7 q5 M% \
doping. That may be the reason that “everyone will pass at the Olympic5 J) Y1 j9 a8 U& V% o1 U
games. Hardly anyone fails in competition testing” — those who did dope" Q1 W, |% j1 K! r" q
have already been caught and sanctioned. Callaway is free to suggest that a+ ` Y6 b" y8 w, B( r1 k
player could have doped beforehand and fooled the test at the game, but this# U0 ]5 w8 p5 ^& q& w: s# ^% k, @
possibility is certainly ruled out for Ye.
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8 D5 T: j9 J- LOver all, even though Callaway did not falsify any data, he did (5 Q2 z% ^+ D/ T
intentionally or not) cherry-pick data that, in my view, are far too
6 b9 d3 l% v7 r, J0 osuggestive to be fair and unbiased. If you want to cover a story of a. _: ^+ P4 v g, {9 K1 S
suspected doping from a scientific point of view, be impartial and provide5 [6 B3 i L. W [3 k/ g
all the facts for the reader to judge. You are entitled to your% o+ @8 Q8 \& R4 N) }
interpretation of the facts, and the expression thereof in your piece,. r+ g# m0 G+ j
explicitly or otherwise, but showing only evidence that favours your. G0 m/ {2 b: w6 g$ b: h1 w: h
argument is hardly good science or journalism. Such an article in a journal0 v+ ?' |$ t% \2 G) A+ u
such as Nature is not an appropriate example of how scientific research or/ ]- J z, M$ k. F* a* j9 y- L1 v
reporting should be done. |
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