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其实比饶毅更牛的回复是 Upenn 的 LAI JIANG9 j2 `+ w( z8 Y" R* S
如果是中国长大的,英语能到这种程度真是很不简单。& K9 B: S9 |) B$ S- }1 b/ Y6 D
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http://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html8 G6 }7 O! @' v
$ I4 w- I3 C$ H# oFROM LAI JIANG, Department of Chemistry, University of Pennsylvania
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& T6 n" T5 k, W4 j: M2 u6 \8 M& O6 |It is a shame to see Nature — which nearly all scientists, including myself
3 F3 P! p0 g. |0 D4 q0 z, regard as one of the most prestigious and influential physical-science
! F2 V7 b2 Q/ |: J, ymagazines — publish a thinly veiled biased article like this. Granted, this& H/ `" b- l) n" f
is not a peer-reviewed scientific article and did not go through the- K6 K/ _) \; @ D
scrutiny of picking referees. But to serve as a channel for the general" x6 a& S. J/ G- P$ M, b8 [& g
populace to be in touch with and appreciate science, the authors and editors& X9 [( x3 L' T, @
should at least present the readers with facts within the proper context,
8 {' z7 o+ \! R0 @. ywhich they blatantly failed to do.
+ n4 V L. m6 B6 y8 ~2 \& ~" F$ U$ O- ~# `! T0 C$ h
First, to identify Ye’s performance increase, Ewen Callaway compared her
Q$ d1 C8 B; B S/ u+ ]0 V" g# UOlympic 400-metre IM time with her performance at the World Championships in
7 o/ }* G( n* P3 I9 V9 |5 q2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “) {" Q' g* g* {" V7 {
anomalous” improvement of around 7 seconds (6.72 s). In fact, her previous
- ^% _8 l+ W8 B% \( u* wpersonal best was 4:33.79 at the Asian Games in 2010. This leads to an
4 ^7 l5 ~0 q1 E) {2 Pimprovement of 5.38 seconds. In a sporting event in which 0.1 s can be the
! M9 b( c+ {; t1 @difference between the gold and silver medal, I see no reason for 5.38 s to* H b' v/ A- v7 Z6 X
be treated as 7 s.
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Second, as previously pointed out, Ye is only 16 years old and her body is% W' X. ~, W5 _3 l! z! E
still developing. Bettering oneself by 5 seconds over two years may seem( N) g4 t3 k6 E7 m) W1 S) Q
impossible for an adult swimmer, but it certainly happens among youngsters.
. g: u4 }% R' x: {An interview with Australian gold medallist Ian Thorpe revealed that his 400
' Y% W y' d* V/ K-metre freestyle time improved by 5 seconds between the ages of 15 and 16.) X( H% ]) l2 `" z. E6 X& ~$ i
For regular people, including Callaway, it may be hard to imagine what an1 ~# r( i, ~" J+ d; ?& |" a5 k% V3 C4 \
elite swimmer can achieve as he or she matures and undergoes scientific and! U: T* h) n+ Y9 R4 j6 r: C8 V
persistent training. But jumping to the conclusion that it is “anomalous”# J# s; s# G/ K0 z' A! }) A2 E( U
based on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.& Q7 \; m% e0 A: u) r
0 j8 {. p4 q. K% S8 o) T5 DThird, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook' Q& [& q. i% Z5 ?
example of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in
0 W, x9 u6 V. {0 u" @" m/ wthe last 50 metres, but Lochte had a huge lead in the first 300 metres, so
+ `; ?1 g/ S- h4 T3 o" h y, Jhe chose not to push himself too hard and to conserve his energy for later
0 ?) U: R) ?2 g) O' R4 k, f2 ?9 Oevents (whether this conforms to the Olympic spirit and the ‘use one’s
& c* z" g1 e3 Q, k( \% }% h8 U. Ebest efforts to win a match’ requirement that the Badminton World5 V, G1 i. @# Q3 W
Federation recently invoked to disqualify four badminton pairs is another
I3 b, }" O0 p# R4 ztopic worth discussing, though probably not in Nature). Ye, on the other% w& i& G" H2 j( O8 M
hand, was trailing behind after the first 300 metres and relied on freestyle0 i8 L C1 E" Q: P! t0 C
, in which she has an edge, to win the race. Failing to mention this. G" ]* [; ]; p% r) x, y. w: s
strategic difference, as well as the fact that Lochte is 23.25 seconds
4 D$ r8 L& r: E, i2 afaster (4:05.18) than Ye overall, creates the illusion that a woman swam( f3 y" Q0 ?, W) U: e/ H4 K
faster than the best man in the same sport, which sounds impossible. Putting
; B, S/ r. F, ?$ v0 e8 saside the gender argument, I believe this is still a leading question that2 _) i, J# k A- p
implies to the reader that there is something fishy going on.9 t3 q' Y3 f5 u& r4 ^3 y
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Fourth is another example of cherry-picking. In the same event, there are2 C2 j" N9 P) n
four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93
9 F; F4 q# D9 ?" h% b5 vs) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s
" K/ O, V: H* P), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns
3 w% e$ o$ T; E: eout, if we are just talking about the last 50 metres in a 400-metre IM,$ ]1 _$ Z1 X: F6 _8 B, e
Lochter is not the example I would have used if I were the author. What kind- F, Y$ }% F, V, X
of scientific rigorousness is Callaway trying to demonstrate here? Is it# i5 g5 \- I; B+ F
logical that if Lochter is the champion, we should assume that he leads in* ~7 z; k8 V0 o1 j6 Z, t
every split? That would be a terrible way to teach the public how science
7 X8 z" g! y- N% z; E% ^works.
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+ U+ Y. ? s7 m* d+ t7 d( z4 `Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and
* A; B& o4 o w. zimplies that a drug test cannot rule out the possibility of doping. Is this
! i" T+ s0 v% D/ v5 G, c% R) Fkind of agnosticism what Nature really wants to teach its readers? By that
: }" ^2 S4 o8 gstandard, I estimate that at least half of the peer-reviewed scientific
/ r* ]- E+ ^/ B3 e1 spapers in Nature should be retracted. How can one convince the editors and
3 P% ~, @* I1 z3 k0 Y4 dreviewers that their proposed theory works for every possible case? One
7 \' q3 B. r$ N: r" R, p+ W6 Ccannot. One chooses to apply the theory to typical examples and to- [* x$ W' F' ` H6 [
demonstrate that in (hopefully) all scenarios considered, the theory works3 s0 v6 u8 J" z7 g) y/ O% f9 F5 B& l$ r
to a degree, and that that should warrant publication until a counterexample
: ~& K& U2 I) z- [is found. I could imagine that Callaway has a sceptical mind, which is- C k# X) e X1 s
crucial to scientific thinking, but that would be put to better use if he
3 w1 y, y3 c, `3 m+ Kwrote a peer-reviewed paper that discussed the odds of Ye doping on a highly* I l, O" Z; w8 g
advanced, non-detectable drug that the Chinese have come up with in the O( @" j3 ~6 t8 k8 [, x7 w
past 4 years (they obviously did not have it in Beijing, otherwise why not! K# f& i0 D! l w, L" e% u- }
use it and woo the audience at home?), based on data and rational derivation
$ u& \3 P, B$ X; B/ q. This article, however, can be interpreted as saying that all athletes are
7 S0 K9 N; [6 f( U4 \0 pdoping and the authorities are just not good enough to catch them. That may {4 _0 `4 P# n) b
be true, logically, but definitely will not make the case if there is ever a
5 J0 b) e* j) x" \* ihearing by the governing body for water sports, FINA, to determine if Ye0 C& Y- Y4 ~$ D7 N; H8 k, [( W4 b
has doped. To ask whether it is possible to obtain a false negative in a
, A6 `" [# Z9 ndrug test looks like a rigged question to me. Of course it is possible:
/ D k& F( R% Y5 I; yother than the athlete taking a drug that the test is not designed to detect& C. [, Z6 D& }# t
, anyone who has taken quantum 101 will tell you that everything is4 b% m& O7 ~& C1 f2 ]$ j
probabilistic in nature, and so there is a probability that the drug in an5 F% G) w: { W) v* l$ G
athlete’s system could tunnel out right at the moment of the test. A slight
# p( y& I+ ^: c6 [chance it may be, but should we disregard all test results because of it?
1 r. f) k" R2 \! LLet’s be practical and reasonable, and accept that the World Anti-Doping
6 A v2 m5 _% Fagency (WADA) is competent at its job. Ye’s urine sample will be stored for4 E9 Q) L1 U4 i4 k1 ^6 S: m
eight years after the contest for future testing as technology advances.
! H S$ C- P! c1 gInnocent until proven guilty, shouldn’t it be?" Y) e+ U* {# k8 S v) e
/ U4 C0 S. w+ `' NSixth, and the last point I would like to make, is that the out-of-
" \4 i- B: f" t. l* l& W; |7 hcompetition drug test is already in effect, which Callaway failed to mention7 X7 W* v, a e ^ o4 d
. As noted in the president of WADA’s press release, drug testing for
, H- L/ L/ V: ~Olympians began at least six months before the opening of the London B7 H; I, L: m7 K
Olympics. Furthermore, 107 athletes have been banned from this Olympics for( F: z& g3 x/ g5 e, H& c0 L) {
doping. That may be the reason that “everyone will pass at the Olympic
" L, l. d) ?& o. r& p3 igames. Hardly anyone fails in competition testing” — those who did dope
+ Y N* u# S5 P! E6 B* ~; X$ m6 s1 chave already been caught and sanctioned. Callaway is free to suggest that a' L! h0 {# g: W4 A
player could have doped beforehand and fooled the test at the game, but this7 P8 C; j6 P# t, `
possibility is certainly ruled out for Ye.
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Over all, even though Callaway did not falsify any data, he did (
3 S! ?0 @" e# Iintentionally or not) cherry-pick data that, in my view, are far too
/ F0 x; e3 v: w9 n/ f/ H) m: Z5 h4 fsuggestive to be fair and unbiased. If you want to cover a story of a$ L* D, J: X2 k
suspected doping from a scientific point of view, be impartial and provide3 a$ y$ o, n8 e# k2 N$ w7 D& u
all the facts for the reader to judge. You are entitled to your8 P2 ^( e+ E* Q1 H9 P, Y; v
interpretation of the facts, and the expression thereof in your piece,/ _" U g1 j0 `6 s1 E% T" m
explicitly or otherwise, but showing only evidence that favours your% y: f* N% w+ C% X7 D' t* d) V" c* m
argument is hardly good science or journalism. Such an article in a journal
3 l- h) x2 {) O4 L( Y% bsuch as Nature is not an appropriate example of how scientific research or
5 F, W8 z, \4 S' T* v. s/ j/ f8 xreporting should be done. |
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