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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# F) x0 \9 d$ G5 L# E' T
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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FROM LAI JIANG, Department of Chemistry, University of Pennsylvania# g( R0 P6 R* A6 }1 P5 S
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It is a shame to see Nature — which nearly all scientists, including myself
# u1 o# h3 d5 y2 a0 g) A$ {, K, regard as one of the most prestigious and influential physical-science
8 ^7 H+ [" y; o+ x1 D0 O* j6 _8 [magazines — publish a thinly veiled biased article like this. Granted, this7 |0 z0 T" x4 D+ k: _2 ]0 q/ Y4 {
is not a peer-reviewed scientific article and did not go through the8 e8 H; r/ p- l
scrutiny of picking referees. But to serve as a channel for the general) N! ^' X( a5 S
populace to be in touch with and appreciate science, the authors and editors) z5 C7 {. V ` H
should at least present the readers with facts within the proper context,
# k5 ^! B! [6 [6 n$ P$ q( ^which they blatantly failed to do.
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First, to identify Ye’s performance increase, Ewen Callaway compared her H; c' S( P: g/ a4 C: S) o
Olympic 400-metre IM time with her performance at the World Championships in2 q" M4 Y! r+ a% f0 _5 ? H
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “$ P2 J) \5 Y. t" D8 r2 D( J2 ?+ H; g' V4 w
anomalous” improvement of around 7 seconds (6.72 s). In fact, her previous+ L' e$ A: r3 w
personal best was 4:33.79 at the Asian Games in 2010. This leads to an$ x4 n6 d: ~- n8 A- C8 S% \9 j
improvement of 5.38 seconds. In a sporting event in which 0.1 s can be the; V' q, V X. d) h. f
difference between the gold and silver medal, I see no reason for 5.38 s to
" D# A8 \" `' M i6 \: gbe treated as 7 s.+ ~8 I) Y2 J( K& `
! ^0 ?4 E3 o( |; Z9 i% USecond, as previously pointed out, Ye is only 16 years old and her body is
! R6 E4 b; V+ _# s! u0 Y7 [# U/ {# f7 ]still developing. Bettering oneself by 5 seconds over two years may seem
9 R% \. K, r/ [impossible for an adult swimmer, but it certainly happens among youngsters.3 v: e% U3 I) C7 ?9 L9 q' |; |
An interview with Australian gold medallist Ian Thorpe revealed that his 400
0 p" }9 A9 S8 m# {5 F! b7 W-metre freestyle time improved by 5 seconds between the ages of 15 and 16.
( L4 A7 H: P; M3 sFor regular people, including Callaway, it may be hard to imagine what an" `9 e% P1 F6 e- h+ l
elite swimmer can achieve as he or she matures and undergoes scientific and% q# F5 h$ z2 z
persistent training. But jumping to the conclusion that it is “anomalous”. `! ^' i2 M4 r+ E' P4 ^
based on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.0 i4 z. O/ }: [7 ]7 F! | b
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Third, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook
+ G1 b- c/ t. y# j2 l1 wexample of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in
3 E$ h$ ^3 Q' ]- Y" t9 Gthe last 50 metres, but Lochte had a huge lead in the first 300 metres, so
D7 @1 E" s! Khe chose not to push himself too hard and to conserve his energy for later
$ Z3 u4 K4 R( L v, ?4 pevents (whether this conforms to the Olympic spirit and the ‘use one’s
4 B8 r2 Q" `" I& ]best efforts to win a match’ requirement that the Badminton World, A, U; s0 y3 w; i7 n8 r% g% O
Federation recently invoked to disqualify four badminton pairs is another- Y% k7 M1 v7 I5 O) q. H8 u
topic worth discussing, though probably not in Nature). Ye, on the other
5 o! b- U; o4 J7 n- ^2 w2 C" S+ G- ahand, was trailing behind after the first 300 metres and relied on freestyle
& Y# [+ p5 U* |( a( w u2 n, in which she has an edge, to win the race. Failing to mention this
c, M$ K3 q# c$ Nstrategic difference, as well as the fact that Lochte is 23.25 seconds. p0 J1 E& T( R* S7 i
faster (4:05.18) than Ye overall, creates the illusion that a woman swam5 N! ^ }! I: r7 x) L/ l8 \
faster than the best man in the same sport, which sounds impossible. Putting
. M0 j/ }3 ^ j3 k6 f' q( iaside the gender argument, I believe this is still a leading question that
. i7 G( v: `4 k" ?" E- n) O5 Kimplies 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 }- f1 Z! x: b$ f% t& Qfour male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93
- T( ]' W n8 l: {s) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s
' R' k. C3 P% t3 T) ]4 F), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns
, J1 J: y" X3 Z9 k7 N8 L- V; Kout, if we are just talking about the last 50 metres in a 400-metre IM,
* s( F$ D; x8 E# y4 M5 d6 iLochter is not the example I would have used if I were the author. What kind
5 Z( h' E) w7 ?7 @( Q" ?of scientific rigorousness is Callaway trying to demonstrate here? Is it2 j. W8 C: l6 Y4 f. x0 \$ v
logical that if Lochter is the champion, we should assume that he leads in" O# e6 B0 F+ \+ s1 m. A
every split? That would be a terrible way to teach the public how science
4 g8 F- L/ n/ y+ }8 @works.* u; {) C4 Q# h9 v& U
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Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and: K9 ]) T. \; {# x! q6 _
implies that a drug test cannot rule out the possibility of doping. Is this
4 n7 e. I7 L1 t; y: Zkind of agnosticism what Nature really wants to teach its readers? By that1 e+ P! C, x4 \3 j/ ]& H: k" E
standard, I estimate that at least half of the peer-reviewed scientific" I7 u2 \! o4 ^% @2 f0 a6 m7 t
papers in Nature should be retracted. How can one convince the editors and; l* p/ b. Y- X8 x" }; h9 F
reviewers that their proposed theory works for every possible case? One' y* z6 q7 I& y/ Y+ Y% {& U! C, |- g
cannot. One chooses to apply the theory to typical examples and to
* H/ I' z0 Z* J7 u) Z4 jdemonstrate that in (hopefully) all scenarios considered, the theory works
A- q) ^( q$ bto a degree, and that that should warrant publication until a counterexample+ P! C# s3 @. \' P* g9 o; F
is found. I could imagine that Callaway has a sceptical mind, which is9 c) |/ c3 ^" A% T& }: I Z
crucial to scientific thinking, but that would be put to better use if he
. Q) M' R5 }" I+ j( k/ f( kwrote a peer-reviewed paper that discussed the odds of Ye doping on a highly
& L. ^' I: C9 i5 L7 v, r1 Cadvanced, non-detectable drug that the Chinese have come up with in the
' \; ]4 i' q9 W8 J' ~# jpast 4 years (they obviously did not have it in Beijing, otherwise why not3 p8 K* D) R. Q7 ~
use it and woo the audience at home?), based on data and rational derivation
9 K* I& S# A; W, e! k0 l7 r. This article, however, can be interpreted as saying that all athletes are
9 d- }3 S' f2 P0 I: u. idoping and the authorities are just not good enough to catch them. That may; V0 ?% e o6 f: m
be true, logically, but definitely will not make the case if there is ever a1 [5 ]: S0 z5 U% j" g8 S* `7 W
hearing by the governing body for water sports, FINA, to determine if Ye4 _0 Y7 c! p! o, }' Z
has doped. To ask whether it is possible to obtain a false negative in a" f0 @. ~' ~7 H/ j6 c
drug test looks like a rigged question to me. Of course it is possible:+ _6 u$ a) \) s6 H4 e
other than the athlete taking a drug that the test is not designed to detect8 v+ O, O/ N$ R# t9 e' E4 E* b/ ~
, anyone who has taken quantum 101 will tell you that everything is
7 C4 l6 y& e$ F6 K" L5 qprobabilistic in nature, and so there is a probability that the drug in an
+ N8 ^+ I5 D' l" W/ m7 iathlete’s system could tunnel out right at the moment of the test. A slight
& s$ ]5 D+ ~* W# V2 ]* X9 }chance it may be, but should we disregard all test results because of it?1 ~1 S8 w3 F" J# r8 C
Let’s be practical and reasonable, and accept that the World Anti-Doping& A( Z9 U4 f0 _* D$ R
agency (WADA) is competent at its job. Ye’s urine sample will be stored for7 q; _+ `. N& _# U8 d! n- q
eight years after the contest for future testing as technology advances.1 e' [+ y. N" z7 o/ e
Innocent until proven guilty, shouldn’t it be?
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0 @) x5 x- k9 T: r$ |; Z0 [Sixth, and the last point I would like to make, is that the out-of-
0 D, ~/ ^3 x6 Ycompetition drug test is already in effect, which Callaway failed to mention+ W& Q |: n, I- i
. As noted in the president of WADA’s press release, drug testing for
0 t- `3 _, e. q2 I. r) tOlympians began at least six months before the opening of the London3 g, d# T1 [; s/ G) m2 E
Olympics. Furthermore, 107 athletes have been banned from this Olympics for# v2 E1 }/ d' O- F. O
doping. That may be the reason that “everyone will pass at the Olympic3 y A4 R3 j9 S n1 u& K, E
games. Hardly anyone fails in competition testing” — those who did dope' t, s: F+ z, ~0 q# z/ K9 g
have already been caught and sanctioned. Callaway is free to suggest that a" I* X; e9 h, d# `& f( R
player could have doped beforehand and fooled the test at the game, but this
9 y5 h* O/ D! H1 W4 d4 ^! K/ L( E9 apossibility is certainly ruled out for Ye.
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) }% N" y% R: }. ?. |( pOver all, even though Callaway did not falsify any data, he did (
, u+ i @; {1 L/ y4 P! i* R/ Iintentionally or not) cherry-pick data that, in my view, are far too
! L0 `0 i }1 N4 |" osuggestive to be fair and unbiased. If you want to cover a story of a
I! A2 B" [6 ysuspected doping from a scientific point of view, be impartial and provide
) [. ~4 G3 z: ~all the facts for the reader to judge. You are entitled to your! Y' E& r9 w5 s6 z
interpretation of the facts, and the expression thereof in your piece,6 \# A9 T1 g4 Y2 y7 L7 T
explicitly or otherwise, but showing only evidence that favours your6 n/ E7 @# P0 L/ H& j/ v8 _
argument is hardly good science or journalism. Such an article in a journal( z! l: _9 n( f2 H" U5 s) L6 D7 c/ S
such as Nature is not an appropriate example of how scientific research or* F+ I( ], g1 V/ X
reporting should be done. |
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