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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
3 F6 ]% S5 Z t7 m) l0 }如果是中国长大的,英语能到这种程度真是很不简单。3 w8 z$ V3 E! x) |1 F9 C, f
5 j4 t6 J5 i+ i1 m+ T1 f" ?# ihttp://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html
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1 ~% T) D( w l3 CFROM LAI JIANG, Department of Chemistry, University of Pennsylvania8 h" N1 [4 T0 M) I+ N
# c. T E' ?9 M, JIt is a shame to see Nature — which nearly all scientists, including myself9 q4 X3 M1 e3 X$ _7 E8 `
, regard as one of the most prestigious and influential physical-science6 A* T3 h! d3 w) k7 k6 C; |
magazines — publish a thinly veiled biased article like this. Granted, this
: g. ]- ]. V4 _- q+ [6 [is not a peer-reviewed scientific article and did not go through the+ X* F( X+ s7 |4 z, s: {3 X* Y9 \
scrutiny of picking referees. But to serve as a channel for the general0 L5 y/ U2 \9 C( i# Q* _
populace to be in touch with and appreciate science, the authors and editors R$ p d' f: C _
should at least present the readers with facts within the proper context,
% W H! @+ r" P! Fwhich they blatantly failed to do.
4 C G, k0 _0 h" \9 N% ]5 r
. i& e) G" U% k% R* oFirst, to identify Ye’s performance increase, Ewen Callaway compared her* K- d7 G( v; g. N) v0 o' R
Olympic 400-metre IM time with her performance at the World Championships in1 _7 p+ l" u9 F l( _; k4 a0 S
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “
, w- e& J2 z- Qanomalous” improvement of around 7 seconds (6.72 s). In fact, her previous+ P# Q- |4 o% Y/ b( L/ Y {9 }
personal best was 4:33.79 at the Asian Games in 2010. This leads to an
# \( L5 [& _2 ]1 X( }improvement of 5.38 seconds. In a sporting event in which 0.1 s can be the- E9 B$ p& K2 b" A' G- b$ {
difference between the gold and silver medal, I see no reason for 5.38 s to3 Y8 s2 x) V; C; F9 q V
be treated as 7 s.3 [$ G0 N# y8 j* Y8 X$ V$ S$ u
0 a! @; v8 ?4 [0 i% iSecond, as previously pointed out, Ye is only 16 years old and her body is& A3 e" O! i, o1 B( ~! w9 x1 z
still developing. Bettering oneself by 5 seconds over two years may seem
) i* y0 q/ G! ]4 b1 ?+ Z- l& Gimpossible for an adult swimmer, but it certainly happens among youngsters.
9 C, r/ ~) }2 [% P4 T$ j' rAn interview with Australian gold medallist Ian Thorpe revealed that his 400
: r! d" [ B% ~/ D) g% }-metre freestyle time improved by 5 seconds between the ages of 15 and 16.
2 w/ U% H* z2 u, a: k/ oFor regular people, including Callaway, it may be hard to imagine what an2 u" j) ^' a a2 Z, s
elite swimmer can achieve as he or she matures and undergoes scientific and
( Y& w8 ?9 z0 h% opersistent training. But jumping to the conclusion that it is “anomalous”; C4 J3 u: D0 \" E5 g
based on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.
" ^( P/ c9 a+ i8 ~ a* Q- A
0 ^3 R, r# H2 _$ _Third, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook* A0 a" _, S q0 Q( ?( u
example of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in2 K8 c1 x" @7 |+ _% S7 u
the last 50 metres, but Lochte had a huge lead in the first 300 metres, so
j/ A0 Z' v- X2 vhe chose not to push himself too hard and to conserve his energy for later
2 E& O0 h' A' Q$ Pevents (whether this conforms to the Olympic spirit and the ‘use one’s C$ @& O9 ] N6 { B0 d$ n" p& Z
best efforts to win a match’ requirement that the Badminton World+ Q4 o r( a- ]" V, z
Federation recently invoked to disqualify four badminton pairs is another$ _+ g: |; k0 g9 @, N$ S7 j9 O* E* {
topic worth discussing, though probably not in Nature). Ye, on the other& @9 t7 _4 H5 H: }2 [, X
hand, was trailing behind after the first 300 metres and relied on freestyle7 G( n5 x, D. G( V/ ~( L
, in which she has an edge, to win the race. Failing to mention this# S0 w; w }4 r) R
strategic difference, as well as the fact that Lochte is 23.25 seconds
( \; V8 v o& F8 r$ h# z+ Qfaster (4:05.18) than Ye overall, creates the illusion that a woman swam5 I5 q I! g% C2 p+ ^- w
faster than the best man in the same sport, which sounds impossible. Putting
" R! f9 |% l, Y! ^aside the gender argument, I believe this is still a leading question that; n" D0 M4 X9 G8 D
implies to the reader that there is something fishy going on.! p7 L- u9 b$ V0 |9 k ?
# \' s( P' b1 S2 E$ e7 g8 sFourth is another example of cherry-picking. In the same event, there are. X7 M m4 H- p [8 _/ S1 Z
four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93
# P g4 b1 Y4 O. H& W4 y2 vs) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s* {1 U' r6 k8 b' N0 V1 E
), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns
$ _* W% H: s7 P1 k q# A- bout, if we are just talking about the last 50 metres in a 400-metre IM,; s; Y9 L+ M: x
Lochter is not the example I would have used if I were the author. What kind0 N5 }& e0 m1 }7 n: `4 i
of scientific rigorousness is Callaway trying to demonstrate here? Is it
# k$ h5 Z% [7 {2 llogical that if Lochter is the champion, we should assume that he leads in- `' h) w& F5 Y! D% u
every split? That would be a terrible way to teach the public how science
& U& z0 b# a4 D% mworks.& d. F& p, b4 ]$ T0 A* g& t
% o4 }9 B5 c; o9 _$ ?" T, @Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and
0 C! c4 M+ `& T) S0 X. c) ?- ?implies that a drug test cannot rule out the possibility of doping. Is this2 u3 [# \. C. x7 h3 [
kind of agnosticism what Nature really wants to teach its readers? By that
, k i( d: f p2 g3 ustandard, I estimate that at least half of the peer-reviewed scientific
: y% N( L _" Xpapers in Nature should be retracted. How can one convince the editors and
3 R6 x1 N8 ~7 n$ |reviewers that their proposed theory works for every possible case? One- s# s/ o3 {6 B- a5 } V
cannot. One chooses to apply the theory to typical examples and to
! r" G3 `7 S8 _( O1 \3 [demonstrate that in (hopefully) all scenarios considered, the theory works$ Y' D9 h6 i1 c4 O, |
to a degree, and that that should warrant publication until a counterexample+ W: E1 B O- ^% n1 z/ o
is found. I could imagine that Callaway has a sceptical mind, which is, G, q j; R+ z$ ?
crucial to scientific thinking, but that would be put to better use if he: `' T/ `/ O" E. B+ l! n
wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly; w( U& o$ f" y+ X4 q U% w
advanced, non-detectable drug that the Chinese have come up with in the
+ M2 V5 L) | B, Z% Apast 4 years (they obviously did not have it in Beijing, otherwise why not
2 m; }, P2 J) h7 W0 s( m& D# Wuse it and woo the audience at home?), based on data and rational derivation' k& V/ y& S1 i3 v
. This article, however, can be interpreted as saying that all athletes are8 ^) N7 j+ j/ m! ]2 A& E
doping and the authorities are just not good enough to catch them. That may0 `1 y, t( ~9 y$ d
be true, logically, but definitely will not make the case if there is ever a- P- C* m1 D5 X4 K$ y/ ]
hearing by the governing body for water sports, FINA, to determine if Ye6 s+ C. y( W2 R2 i: @
has doped. To ask whether it is possible to obtain a false negative in a
0 M5 ^$ A7 A! |drug test looks like a rigged question to me. Of course it is possible:
4 f6 T7 U* p9 }# H$ vother than the athlete taking a drug that the test is not designed to detect
5 x/ Y" g' T9 C) B, anyone who has taken quantum 101 will tell you that everything is9 ]- Q- B/ p z" J9 \" i
probabilistic in nature, and so there is a probability that the drug in an' T6 F! ?& G3 L
athlete’s system could tunnel out right at the moment of the test. A slight! G, u7 w- t3 k! i- x
chance it may be, but should we disregard all test results because of it?
& H& ]9 E2 _1 f( I( u2 G VLet’s be practical and reasonable, and accept that the World Anti-Doping2 Y' O: G5 L, W4 m/ p
agency (WADA) is competent at its job. Ye’s urine sample will be stored for9 I" H1 K- M) c7 k
eight years after the contest for future testing as technology advances.
- u7 l2 Q* T4 X/ s, P- T0 MInnocent until proven guilty, shouldn’t it be?$ [1 I& R2 U# m# z' H; c
) y4 |0 x& x" CSixth, and the last point I would like to make, is that the out-of-
( r. U2 w3 V! Z) y, [# a& w% ]+ ecompetition drug test is already in effect, which Callaway failed to mention. P" }) q! i9 O9 w8 [6 \4 {
. As noted in the president of WADA’s press release, drug testing for
9 v' h9 k/ p, _Olympians began at least six months before the opening of the London4 E, B4 R# o: z R8 \* T/ X5 @- {
Olympics. Furthermore, 107 athletes have been banned from this Olympics for) a& ^; m( R! P1 |6 h1 i
doping. That may be the reason that “everyone will pass at the Olympic
' y8 q' G/ M/ o4 G" [% Vgames. Hardly anyone fails in competition testing” — those who did dope
: e' ?$ G7 B0 {, J. ahave already been caught and sanctioned. Callaway is free to suggest that a
/ n5 z( \0 V7 ]4 gplayer could have doped beforehand and fooled the test at the game, but this2 ^: k: P. ? u- N. r
possibility is certainly ruled out for Ye.
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$ V1 h' D4 N r5 NOver all, even though Callaway did not falsify any data, he did (
: j+ R* B9 p( C( uintentionally or not) cherry-pick data that, in my view, are far too
& V$ U$ @) l6 J- \6 Z: nsuggestive to be fair and unbiased. If you want to cover a story of a
) C' k9 y/ ?" A8 Y' Xsuspected doping from a scientific point of view, be impartial and provide* _' y, p0 d- q7 C. G) g4 }
all the facts for the reader to judge. You are entitled to your) y4 \& T9 W* Y( G7 `0 M% |
interpretation of the facts, and the expression thereof in your piece,
0 t! @$ {; B r0 `; J/ Hexplicitly or otherwise, but showing only evidence that favours your
) v( B9 x( |- v. ~# Sargument is hardly good science or journalism. Such an article in a journal5 U: j' n& W( }0 |2 ], Y
such as Nature is not an appropriate example of how scientific research or5 A8 @! Z0 s- |: f" g
reporting should be done. |
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