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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 JIANG1 s q: C' _ y1 ?' I- C
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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$ ^; N- W. a* [5 ?FROM LAI JIANG, Department of Chemistry, University of Pennsylvania! N$ q+ q0 o/ {
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It is a shame to see Nature — which nearly all scientists, including myself
2 J' ~3 t' n5 ?" H ], regard as one of the most prestigious and influential physical-science! K' a, A K: Q/ k9 K% y/ |
magazines — publish a thinly veiled biased article like this. Granted, this
' }0 o+ x6 b3 H& \is not a peer-reviewed scientific article and did not go through the
- S# U$ g7 h( |1 a+ tscrutiny of picking referees. But to serve as a channel for the general
8 A+ y( n/ b) @5 S. _$ O. B# B8 C. qpopulace to be in touch with and appreciate science, the authors and editors
& V% T# p- J! y K0 f* oshould at least present the readers with facts within the proper context,
& Z, l; _2 C' Swhich they blatantly failed to do.
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First, to identify Ye’s performance increase, Ewen Callaway compared her8 I8 @; D0 l2 N" o+ D7 f% ~8 l
Olympic 400-metre IM time with her performance at the World Championships in4 n( P# t8 r' t3 x9 M: j' y
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “$ b/ Y! ?5 Z0 c$ i; e- u
anomalous” improvement of around 7 seconds (6.72 s). In fact, her previous
: g- O T9 _: ~personal best was 4:33.79 at the Asian Games in 2010. This leads to an
# n1 J! e$ S5 y! [6 x U0 k* Mimprovement of 5.38 seconds. In a sporting event in which 0.1 s can be the
1 ]2 ~# Z9 J9 m+ ]2 {0 B3 @* ydifference between the gold and silver medal, I see no reason for 5.38 s to$ h# i) }6 i9 C c k
be treated as 7 s.. F u* |+ r+ e- Q+ S0 i. k* n
. D$ ~3 W* F s& |7 aSecond, as previously pointed out, Ye is only 16 years old and her body is
8 `+ r: f0 \5 s+ L0 X8 v3 h ^still developing. Bettering oneself by 5 seconds over two years may seem& M& s8 M7 P! ~( ?: q
impossible for an adult swimmer, but it certainly happens among youngsters.) Y& y3 q7 |7 f; w6 K, r
An interview with Australian gold medallist Ian Thorpe revealed that his 400
B: A% ?' b. J-metre freestyle time improved by 5 seconds between the ages of 15 and 16.% w9 v% N. A x3 R1 ~# m: w3 O
For regular people, including Callaway, it may be hard to imagine what an
8 i" W( S# `& C& ]5 uelite swimmer can achieve as he or she matures and undergoes scientific and% [1 r' y, s+ o5 t+ t4 v1 H
persistent training. But jumping to the conclusion that it is “anomalous”
! w/ w/ B+ Z, Ibased on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.
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, ? N: m! i6 ]; a! z/ y6 Q) lThird, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook
* Z9 S( ]' X z7 N: n8 ?1 N2 q) O- Hexample of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in& N6 {+ O1 { i Y( n' j
the last 50 metres, but Lochte had a huge lead in the first 300 metres, so
( o! T4 v7 w, {+ N5 r+ khe chose not to push himself too hard and to conserve his energy for later
: w% Z' Q+ Z) C$ Zevents (whether this conforms to the Olympic spirit and the ‘use one’s! r! }1 Q, A! C' k+ H% A
best efforts to win a match’ requirement that the Badminton World
8 | g3 B% F$ A! Y P3 TFederation recently invoked to disqualify four badminton pairs is another
& J$ ~$ H6 Y& [7 n1 I. _/ [! _! @topic worth discussing, though probably not in Nature). Ye, on the other
3 }0 n' j; _" w( Shand, was trailing behind after the first 300 metres and relied on freestyle
h/ y% F7 x( R' c% _# y, in which she has an edge, to win the race. Failing to mention this
- r# d4 f. o$ {! F3 X/ Cstrategic difference, as well as the fact that Lochte is 23.25 seconds8 z! e5 K: |( e
faster (4:05.18) than Ye overall, creates the illusion that a woman swam
3 e7 Z8 Z7 Y. O1 C @faster than the best man in the same sport, which sounds impossible. Putting! e; Z* U4 J, q+ U) y5 U
aside the gender argument, I believe this is still a leading question that
3 a9 \. u" q) F7 Rimplies to the reader that there is something fishy going on.+ F0 T8 h! ]: v; O# j8 ?
( s' m3 c" H2 x8 e1 oFourth is another example of cherry-picking. In the same event, there are
- s: u, k& ?( m. j8 Yfour male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.93
/ D$ E2 n8 _( b/ ?, ks) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s
) \6 A+ ^' \8 l3 ^1 F4 P), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns$ `" N+ H/ T- O5 Z {
out, if we are just talking about the last 50 metres in a 400-metre IM,
' G9 a0 N9 D1 |$ y* K7 ULochter is not the example I would have used if I were the author. What kind" D0 S8 T3 _! L/ u3 _' E
of scientific rigorousness is Callaway trying to demonstrate here? Is it
" B' }6 Y. m2 C# T" E1 j8 Q8 O; ^logical that if Lochter is the champion, we should assume that he leads in
x0 y2 o. i8 G( v* devery split? That would be a terrible way to teach the public how science/ g# I! l( y/ k6 T! [
works.. p# Z" D( I3 W$ S& l* X* v& B. A, R
; u3 P S: r" N pFifth is the issue I oppose the most. Callaway quotes Ross Tucker and% K/ f5 w3 o# x: @0 V+ ]. K% z; R
implies that a drug test cannot rule out the possibility of doping. Is this
$ [2 A5 @! F+ G( O0 O" N# W8 akind of agnosticism what Nature really wants to teach its readers? By that
, R4 e9 x, L4 a2 tstandard, I estimate that at least half of the peer-reviewed scientific: Q9 H, _! t4 Y6 n, R, h& w
papers in Nature should be retracted. How can one convince the editors and
5 ]5 u X% J( g; _reviewers that their proposed theory works for every possible case? One
8 N$ x2 }6 c [. [) R7 I; `4 q" v: R/ scannot. One chooses to apply the theory to typical examples and to" ] F0 W# G. s; \3 b
demonstrate that in (hopefully) all scenarios considered, the theory works& j4 {. T. {% c7 Q8 t% B
to a degree, and that that should warrant publication until a counterexample
8 }8 i" ]. x4 {6 {4 {1 C7 Eis found. I could imagine that Callaway has a sceptical mind, which is# r: M1 E0 e1 `: X2 r, P( X
crucial to scientific thinking, but that would be put to better use if he3 G5 z r% b7 n: g% x- Y
wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly
& T8 `6 M" K# e* }+ @( ? aadvanced, non-detectable drug that the Chinese have come up with in the- u% [/ s3 B3 Z5 v
past 4 years (they obviously did not have it in Beijing, otherwise why not
- V' M3 i- h8 I9 X5 Iuse it and woo the audience at home?), based on data and rational derivation
- l1 g# [/ y, A. k# S/ O. This article, however, can be interpreted as saying that all athletes are3 m7 j: s; P* w, |! q/ Q0 O
doping and the authorities are just not good enough to catch them. That may
+ [) v2 ?, |0 c: i* S0 T# lbe true, logically, but definitely will not make the case if there is ever a4 \, B/ M2 Q% j0 O: F& k+ k" Z
hearing by the governing body for water sports, FINA, to determine if Ye {9 Z1 A$ z" Q
has doped. To ask whether it is possible to obtain a false negative in a4 E# J: m7 S4 \( S
drug test looks like a rigged question to me. Of course it is possible:+ N0 z7 |7 u$ Y* `) e
other than the athlete taking a drug that the test is not designed to detect. r. \ { @, N
, anyone who has taken quantum 101 will tell you that everything is
+ J9 ?4 d) u* R/ F& n' i' `probabilistic in nature, and so there is a probability that the drug in an- }3 [8 L: D! A1 w$ s" d+ L2 ^, E
athlete’s system could tunnel out right at the moment of the test. A slight% @% c; x- h1 U: b7 t- b% D! A
chance it may be, but should we disregard all test results because of it?
( X0 \( s; t+ r. pLet’s be practical and reasonable, and accept that the World Anti-Doping" ~& h/ k( `. C$ k6 r; `1 ?
agency (WADA) is competent at its job. Ye’s urine sample will be stored for
" M- p' V- i3 @% [eight years after the contest for future testing as technology advances.. t: q# m; ^( i
Innocent until proven guilty, shouldn’t it be?& G1 d l3 c! N' k& S2 B( q3 }
" a* V* A5 g" K5 i n9 a# ^Sixth, and the last point I would like to make, is that the out-of-$ q' C% Q F3 _- p# W- A# f' H
competition drug test is already in effect, which Callaway failed to mention
# c4 `8 O& e+ W7 O7 l3 u! I. As noted in the president of WADA’s press release, drug testing for
* Q! e1 O1 C s7 P2 H) {Olympians began at least six months before the opening of the London
0 _4 X" ~& R: B J5 sOlympics. Furthermore, 107 athletes have been banned from this Olympics for: ]6 |8 \5 t8 C: x' ~6 j* y# G3 A
doping. That may be the reason that “everyone will pass at the Olympic7 [* C) O3 f0 `: F' ] O6 O
games. Hardly anyone fails in competition testing” — those who did dope, ~8 M# e# V& _( T2 e! V; y
have already been caught and sanctioned. Callaway is free to suggest that a
. {5 T$ M+ |' ]- J) A6 }- _player could have doped beforehand and fooled the test at the game, but this9 h5 k0 g$ o$ W ~% E# \
possibility is certainly ruled out for Ye.
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* {1 s% Q V) L8 xOver all, even though Callaway did not falsify any data, he did ( p$ N3 V; [+ [; B
intentionally or not) cherry-pick data that, in my view, are far too3 G8 H. {5 f/ E/ ~* g; e" w. O
suggestive to be fair and unbiased. If you want to cover a story of a
@; \) L, G T+ B" Z7 i8 |suspected doping from a scientific point of view, be impartial and provide. D' F7 |8 V# T$ v( ^0 O
all the facts for the reader to judge. You are entitled to your) z$ E3 o W8 ^' L
interpretation of the facts, and the expression thereof in your piece,9 B6 v& G8 o, z2 Z+ ]* @* u0 y
explicitly or otherwise, but showing only evidence that favours your
/ J5 u: R1 E B$ n) B2 h+ y4 ~5 Iargument is hardly good science or journalism. Such an article in a journal
+ N) J% \1 {9 o3 `5 X( E! E4 Jsuch as Nature is not an appropriate example of how scientific research or8 Y) g) n% n9 X$ d3 A, `) n2 v$ X: @
reporting should be done. |
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