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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 JIANG3 A0 Z+ r: X# n; \2 P
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.html6 E& _$ B2 y- i' y2 ]. v
( H$ G6 W$ a: h8 h9 @1 KFROM LAI JIANG, Department of Chemistry, University of Pennsylvania* Z+ Y0 ?$ Q: s! i' [
; `9 }7 F, |) f- ~) @3 qIt is a shame to see Nature — which nearly all scientists, including myself
/ w' \' ]2 R! x) p, regard as one of the most prestigious and influential physical-science
$ n8 I6 |4 K, b: ]8 pmagazines — publish a thinly veiled biased article like this. Granted, this
6 m" I3 w. N2 d& \7 Sis not a peer-reviewed scientific article and did not go through the
3 Q. l$ O7 o" g4 E: y' d; Q1 Jscrutiny of picking referees. But to serve as a channel for the general
0 F/ _3 |: `! \populace to be in touch with and appreciate science, the authors and editors! d3 a5 f' ~+ n
should at least present the readers with facts within the proper context,- _: M0 i I$ j1 a& `& U# w2 u
which they blatantly failed to do.
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+ O* W8 F! }9 t' ?$ @First, to identify Ye’s performance increase, Ewen Callaway compared her7 h, ?% x0 ]1 o2 B" a( I4 \
Olympic 400-metre IM time with her performance at the World Championships in! B: |+ ^- y9 n$ b( n
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “ r/ Q* s8 O& S2 h( {% U4 J
anomalous” improvement of around 7 seconds (6.72 s). In fact, her previous5 ?" F& P) K. |$ N
personal best was 4:33.79 at the Asian Games in 2010. This leads to an4 ~: B( J" [( o8 c1 z
improvement of 5.38 seconds. In a sporting event in which 0.1 s can be the
) D0 n2 v, w0 W. @2 ~, j! rdifference between the gold and silver medal, I see no reason for 5.38 s to; b" ^5 r9 J* Y% {
be treated as 7 s.
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% q7 K2 _/ W3 I& J `7 oSecond, as previously pointed out, Ye is only 16 years old and her body is, z) `2 p2 b7 J& J
still developing. Bettering oneself by 5 seconds over two years may seem
: B3 G0 c1 Y- V, _# o9 j& ^impossible for an adult swimmer, but it certainly happens among youngsters.
) ^- i, E1 b# T& p* z5 ]( U$ [0 }An interview with Australian gold medallist Ian Thorpe revealed that his 400# H" Z2 }" x5 {
-metre freestyle time improved by 5 seconds between the ages of 15 and 16.$ ~0 ^, z; M% j: |6 N, @" n
For regular people, including Callaway, it may be hard to imagine what an: ?: T9 s5 Z3 \+ o6 U2 A
elite swimmer can achieve as he or she matures and undergoes scientific and( S# h5 `9 K8 S7 m1 \1 L
persistent training. But jumping to the conclusion that it is “anomalous”
8 \- h1 a( ]) A" {, Xbased 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' L5 _9 b1 N0 G# J( x7 p: g
example of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in8 n0 _+ t4 t% `2 \5 d
the last 50 metres, but Lochte had a huge lead in the first 300 metres, so
6 ^9 v6 z# v) ~6 M2 c Nhe chose not to push himself too hard and to conserve his energy for later
/ p X' b6 [) L+ wevents (whether this conforms to the Olympic spirit and the ‘use one’s
" O- u5 F. R7 \2 s9 Gbest efforts to win a match’ requirement that the Badminton World
+ a" S2 B- ?7 O6 N* BFederation recently invoked to disqualify four badminton pairs is another
4 u2 U* K! F8 Y, W* S4 v8 Otopic worth discussing, though probably not in Nature). Ye, on the other
- o7 c6 w- A$ e4 Jhand, was trailing behind after the first 300 metres and relied on freestyle
& k( e, X) u; z" d* v/ x7 @( U, in which she has an edge, to win the race. Failing to mention this
" D2 O' C6 i- y6 p! V/ Wstrategic difference, as well as the fact that Lochte is 23.25 seconds5 {6 q% h; i* s7 e- s5 S& l
faster (4:05.18) than Ye overall, creates the illusion that a woman swam: P; r! q! e: a) E
faster than the best man in the same sport, which sounds impossible. Putting8 Z4 t0 v# H# H- y2 l4 F5 c
aside the gender argument, I believe this is still a leading question that
) ~. @+ a" V" Y0 F3 }" H) X) m E9 {implies to the reader that there is something fishy going on.+ K) t0 o# H( K6 K
% D8 B3 j8 t5 S4 g( GFourth is another example of cherry-picking. In the same event, there are
* Q( c4 |, a9 Mfour male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93, N9 r0 R3 ~5 V6 k. o
s) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s8 O1 r! G/ m' ~2 ]0 X2 `9 b
), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns( n1 b% m7 G0 s5 ]: |8 H
out, if we are just talking about the last 50 metres in a 400-metre IM,
2 L, ^, O6 R$ uLochter is not the example I would have used if I were the author. What kind& A9 ^/ H, D4 N, \# J l. p- s
of scientific rigorousness is Callaway trying to demonstrate here? Is it6 d& o4 @2 r0 z* ?1 ^/ b" C; s# H0 u
logical that if Lochter is the champion, we should assume that he leads in
, K" X6 C2 u# t" aevery split? That would be a terrible way to teach the public how science3 x0 S0 Y: D% q2 p/ o5 [( h
works.
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Fifth is the issue I oppose the most. Callaway quotes Ross Tucker and$ @7 d3 D4 J2 o- l
implies that a drug test cannot rule out the possibility of doping. Is this5 v. ?/ X" a: I; y( E# a
kind of agnosticism what Nature really wants to teach its readers? By that
! s6 X1 y! {0 E% m; Mstandard, I estimate that at least half of the peer-reviewed scientific6 p) |/ p; G/ e+ f: i; l( U0 S
papers in Nature should be retracted. How can one convince the editors and" X% g# U7 @2 S, S3 V2 k
reviewers that their proposed theory works for every possible case? One
+ N( U4 V* A. ?' ^0 D Icannot. One chooses to apply the theory to typical examples and to" B2 T+ B/ V4 B: \! [+ v
demonstrate that in (hopefully) all scenarios considered, the theory works
1 U, t- P( Z b) F+ g. l7 p+ p" }to a degree, and that that should warrant publication until a counterexample4 v+ V ^* G+ q' Q l; d
is found. I could imagine that Callaway has a sceptical mind, which is
+ T# p5 |+ J- D$ u$ Z- l/ vcrucial to scientific thinking, but that would be put to better use if he- m7 u1 R1 @! a7 `7 P
wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly. E) r' g, ?2 Q3 E* B' v ?1 W, n
advanced, non-detectable drug that the Chinese have come up with in the2 ?6 {2 r& }" D s( |, S& x: m! L
past 4 years (they obviously did not have it in Beijing, otherwise why not) ^5 n/ e8 X$ S, y0 N9 |
use it and woo the audience at home?), based on data and rational derivation
; U9 r5 w" k9 N. This article, however, can be interpreted as saying that all athletes are/ s# d8 U1 C$ X, y" d% m0 c+ ?
doping and the authorities are just not good enough to catch them. That may+ m7 Y' h5 W; n: Q
be true, logically, but definitely will not make the case if there is ever a
4 r" H) J1 ?& ^5 [' Jhearing by the governing body for water sports, FINA, to determine if Ye
# }( O% a( ]3 S; y' ehas doped. To ask whether it is possible to obtain a false negative in a7 v$ j; _% E O: K, c% d4 S6 O
drug test looks like a rigged question to me. Of course it is possible:
3 }0 ^% h3 R7 @6 ?) Z8 \other than the athlete taking a drug that the test is not designed to detect
% I1 M9 y8 [; Y8 q. ~, anyone who has taken quantum 101 will tell you that everything is
( Q1 q$ b" ~2 i9 T2 |& f0 I0 Sprobabilistic in nature, and so there is a probability that the drug in an( \! U+ N( w( ~; t4 y4 c
athlete’s system could tunnel out right at the moment of the test. A slight
4 k& b% k, d1 J6 Zchance it may be, but should we disregard all test results because of it?
6 R/ Y% V8 }+ ?- {Let’s be practical and reasonable, and accept that the World Anti-Doping4 F% @" @; g% V- Q/ |! C
agency (WADA) is competent at its job. Ye’s urine sample will be stored for$ p+ `" _4 t7 m% L- b
eight years after the contest for future testing as technology advances.& B3 L9 N, G0 t7 {
Innocent until proven guilty, shouldn’t it be? f# X3 u' O F2 e# {* `
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Sixth, and the last point I would like to make, is that the out-of-. [$ B5 }. f" \3 P" l6 j3 t
competition drug test is already in effect, which Callaway failed to mention$ G9 f$ F9 |, n8 X/ V/ x
. As noted in the president of WADA’s press release, drug testing for' ]+ y# ?9 R L3 E
Olympians began at least six months before the opening of the London; `; O) ~: h! E8 n. B
Olympics. Furthermore, 107 athletes have been banned from this Olympics for/ _1 _7 D2 ~, [- ^/ b4 t) ]/ x
doping. That may be the reason that “everyone will pass at the Olympic( ^, b6 }" I& R1 d: a( U: [
games. Hardly anyone fails in competition testing” — those who did dope
" O! }2 p" {# x8 Xhave already been caught and sanctioned. Callaway is free to suggest that a% ~% c: j! j/ G p! H1 A! s
player could have doped beforehand and fooled the test at the game, but this; }; k) H* d' B* b. a/ h
possibility is certainly ruled out for Ye.& z* X* ?1 A- t9 b8 Q8 f. @4 @. ?
" X5 y, W* E8 m- ]0 X1 V# b. sOver all, even though Callaway did not falsify any data, he did (
; N8 v8 r3 r% _6 ~intentionally or not) cherry-pick data that, in my view, are far too+ A8 a; A% T5 J9 _3 u
suggestive to be fair and unbiased. If you want to cover a story of a
' }9 N# \4 W* m- B# o8 S2 a7 psuspected doping from a scientific point of view, be impartial and provide
; ^+ I" g2 z0 Z: {- A7 E0 L! @all the facts for the reader to judge. You are entitled to your1 U8 Y" ~4 V, s8 d: N; I9 M3 I5 X
interpretation of the facts, and the expression thereof in your piece,( b0 N9 |" E) n- B& v! \- F S4 c
explicitly or otherwise, but showing only evidence that favours your
; m+ t7 e5 v* |, ~argument is hardly good science or journalism. Such an article in a journal. }- Q0 G5 X2 r
such as Nature is not an appropriate example of how scientific research or8 E# ?5 h4 u+ s% ^8 o1 e/ Q h* ^
reporting should be done. |
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