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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 JIANG9 d- h7 ?/ D4 D* Z6 y: ~
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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/ C! o6 _6 x6 t& hhttp://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html
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FROM LAI JIANG, Department of Chemistry, University of Pennsylvania0 o. @1 @2 ^* N1 Y# F3 \
& I! s k0 P* m5 V iIt is a shame to see Nature — which nearly all scientists, including myself {# {% `, L4 {$ b; s8 N
, regard as one of the most prestigious and influential physical-science! X# x$ j* i3 k
magazines — publish a thinly veiled biased article like this. Granted, this
7 l) P) X/ h9 c, m' N" @/ P2 Dis not a peer-reviewed scientific article and did not go through the
( a+ v- P7 ^, S/ z k* f& cscrutiny of picking referees. But to serve as a channel for the general
/ c ]: Z7 {. {/ tpopulace to be in touch with and appreciate science, the authors and editors I4 a8 k5 j0 W" J7 h6 o5 Y& b
should at least present the readers with facts within the proper context,7 b; q. d. Y8 x1 `1 i" X
which they blatantly failed to do.
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First, to identify Ye’s performance increase, Ewen Callaway compared her% E' ]' c7 y9 m6 X
Olympic 400-metre IM time with her performance at the World Championships in
* ~, Z8 A: W, z2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “
- ` z0 u8 w3 F# @6 Janomalous” improvement of around 7 seconds (6.72 s). In fact, her previous
1 @3 y( m- j+ R9 L" m5 @" Wpersonal best was 4:33.79 at the Asian Games in 2010. This leads to an
9 b; J1 h9 O& u1 A$ v) yimprovement of 5.38 seconds. In a sporting event in which 0.1 s can be the
! o9 [+ f1 c& p3 B3 `0 T6 M' j7 B4 [difference between the gold and silver medal, I see no reason for 5.38 s to
: S) {+ g2 C S- K4 vbe treated as 7 s.
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% ~* Q6 l* K7 K' Y; [Second, as previously pointed out, Ye is only 16 years old and her body is1 j: _7 ?) l0 V4 U# f
still developing. Bettering oneself by 5 seconds over two years may seem
j4 i: F, F* q* P. E" B6 Uimpossible for an adult swimmer, but it certainly happens among youngsters.
L" }, p \. V) x4 GAn interview with Australian gold medallist Ian Thorpe revealed that his 4003 F) u4 e& L, s0 d: z7 d; v! X" Z$ t. i
-metre freestyle time improved by 5 seconds between the ages of 15 and 16.
/ b. K5 q; \& t- O" B1 A; dFor regular people, including Callaway, it may be hard to imagine what an
7 v$ d: i- R/ Felite swimmer can achieve as he or she matures and undergoes scientific and6 i; k, E# I, Q6 e7 `* n' [& P
persistent training. But jumping to the conclusion that it is “anomalous”
& h0 N1 A4 B' p: E! zbased on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.
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Third, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook
4 q6 U& e; B: n- n& Texample of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in( R8 u8 A( k. F5 E
the last 50 metres, but Lochte had a huge lead in the first 300 metres, so
; _) R+ W: n) d0 k' dhe chose not to push himself too hard and to conserve his energy for later* M m6 i4 g8 ^& h
events (whether this conforms to the Olympic spirit and the ‘use one’s7 {: N9 B l3 c; ?. o% Q
best efforts to win a match’ requirement that the Badminton World
7 c. c9 I# `6 q# Q4 a7 T8 N7 c5 EFederation recently invoked to disqualify four badminton pairs is another. ?3 I+ l" S. l1 h3 Q
topic worth discussing, though probably not in Nature). Ye, on the other f0 i4 B+ E3 _( r# b
hand, was trailing behind after the first 300 metres and relied on freestyle
8 K( K) r2 K7 }" K" X, in which she has an edge, to win the race. Failing to mention this* h& E8 [' Y: t
strategic difference, as well as the fact that Lochte is 23.25 seconds0 X/ {/ W" J7 W
faster (4:05.18) than Ye overall, creates the illusion that a woman swam+ L/ C1 s9 q$ S" B u9 t: Q, R0 t
faster than the best man in the same sport, which sounds impossible. Putting/ ]5 `: ?* z( K9 k
aside the gender argument, I believe this is still a leading question that3 V5 l1 n7 R2 V# `. A6 ^/ R
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
2 R" e. @; `7 n& I+ E( F2 _: sfour male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.938 \9 i8 N$ B9 h; `4 a
s) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s
2 w9 P" Z( L& v6 G), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns2 v5 [9 i* Y% n, h% v% `; W
out, if we are just talking about the last 50 metres in a 400-metre IM,
$ I6 P# m. \7 f" |; g. S1 [Lochter is not the example I would have used if I were the author. What kind
5 b+ `/ `1 c4 J; z' h3 p2 a8 yof scientific rigorousness is Callaway trying to demonstrate here? Is it2 E, A/ u; h$ k' L2 X) F
logical that if Lochter is the champion, we should assume that he leads in
' F$ c2 `% B* Levery split? That would be a terrible way to teach the public how science
1 {" o' M( @, C; t; q3 W; p6 G/ n1 h5 Xworks.) ?; S$ W1 C f2 ?* k! }
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Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and1 v5 j8 h/ d' T2 A5 Y; s
implies that a drug test cannot rule out the possibility of doping. Is this
9 c, Q- R M4 {' {7 f1 mkind of agnosticism what Nature really wants to teach its readers? By that ]9 i: F8 ^6 ]* `: _
standard, I estimate that at least half of the peer-reviewed scientific+ f- d9 j8 T( s) F' w! x: h
papers in Nature should be retracted. How can one convince the editors and
* u! J) ?/ G. ]4 qreviewers that their proposed theory works for every possible case? One2 p& [; E. |( ~
cannot. One chooses to apply the theory to typical examples and to
; ?) c& U7 m+ k1 o" K% y6 Ndemonstrate that in (hopefully) all scenarios considered, the theory works/ G6 U! n; U% i% Q
to a degree, and that that should warrant publication until a counterexample
5 Y/ |& ?, u; x9 Qis found. I could imagine that Callaway has a sceptical mind, which is' `" A% O6 I6 I: Y( ?& c
crucial to scientific thinking, but that would be put to better use if he
0 x% }- `0 L& j- ?9 pwrote a peer-reviewed paper that discussed the odds of Ye doping on a highly; M- ~5 S2 }' e( o
advanced, non-detectable drug that the Chinese have come up with in the/ |' @4 w, p- O9 t
past 4 years (they obviously did not have it in Beijing, otherwise why not
& ]7 @4 q: X7 yuse it and woo the audience at home?), based on data and rational derivation
1 k: [" X& `& x, i. This article, however, can be interpreted as saying that all athletes are
) n! y7 B, V1 p ?& v/ ?7 Wdoping and the authorities are just not good enough to catch them. That may" ]$ h. }! }1 a3 h8 k: l
be true, logically, but definitely will not make the case if there is ever a
- s" _; P& [$ I- M0 q8 p+ c7 L2 Vhearing by the governing body for water sports, FINA, to determine if Ye0 ^* g, y4 ~1 s! T$ I1 k9 ~3 M* t
has doped. To ask whether it is possible to obtain a false negative in a
; r6 q1 ]1 b* N rdrug test looks like a rigged question to me. Of course it is possible:
& |) @ V; B1 I& Fother than the athlete taking a drug that the test is not designed to detect( m! b& t `; J" t7 {
, anyone who has taken quantum 101 will tell you that everything is9 n2 [4 J f! `7 Z7 [& ~
probabilistic in nature, and so there is a probability that the drug in an* b: y# P. D5 q8 V3 d- M( k
athlete’s system could tunnel out right at the moment of the test. A slight
* z& p0 g7 }, T" H" `/ Pchance it may be, but should we disregard all test results because of it?
5 Y2 c2 [) U/ J T0 ZLet’s be practical and reasonable, and accept that the World Anti-Doping4 E) ~( b- K, L/ F% L. n- L
agency (WADA) is competent at its job. Ye’s urine sample will be stored for
, _+ @# h9 m2 _6 G8 Neight years after the contest for future testing as technology advances.
; A1 z8 X, I* l4 @* dInnocent 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-
* o' ^' m$ K1 Rcompetition drug test is already in effect, which Callaway failed to mention/ L$ x, e& l; t# P9 B' A
. As noted in the president of WADA’s press release, drug testing for
) h- G: S' u% J% g1 WOlympians began at least six months before the opening of the London
I! u) a3 f# B. y. ?3 @/ ]; O% r! }Olympics. Furthermore, 107 athletes have been banned from this Olympics for. {, \& o+ P {0 U4 W+ G: E3 w9 \
doping. That may be the reason that “everyone will pass at the Olympic
2 a. z; J$ [ Sgames. Hardly anyone fails in competition testing” — those who did dope" E6 v6 K# c' F9 p2 v9 y
have already been caught and sanctioned. Callaway is free to suggest that a9 W f* N2 y) K
player could have doped beforehand and fooled the test at the game, but this
# [5 ~3 ]. \2 w4 H! u1 apossibility is certainly ruled out for Ye.- M4 G9 b% d* F; d7 i) e Z
) u& ^6 l; H$ [- j/ o* C8 q5 N2 TOver all, even though Callaway did not falsify any data, he did (2 v- N) U' l. Y4 o2 v
intentionally or not) cherry-pick data that, in my view, are far too
0 J8 C' f3 A) M9 L! Tsuggestive to be fair and unbiased. If you want to cover a story of a
, _/ ~% d. q- }& r9 Y" Csuspected doping from a scientific point of view, be impartial and provide
: q( Z! O7 K2 G) u9 n' J6 U$ Zall the facts for the reader to judge. You are entitled to your
+ Z, U! [0 r3 E% minterpretation of the facts, and the expression thereof in your piece,9 q& C6 p8 M2 m) Z$ c9 Z
explicitly or otherwise, but showing only evidence that favours your' ]3 u( f2 N1 K/ u: Y- W2 K5 Y
argument is hardly good science or journalism. Such an article in a journal
a1 E" W R' |& s) @. vsuch as Nature is not an appropriate example of how scientific research or, c- v" g9 H7 v6 d2 P6 Z
reporting should be done. |
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