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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 JIANG2 r8 Y( k2 q3 O$ y1 ?
如果是中国长大的,英语能到这种程度真是很不简单。3 ?& y! U! Q$ b J& X
8 F: ^% ]5 [9 s5 g0 I" Whttp://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html5 p, I: x& H8 Z& U! g5 r
) j2 j, M" v8 h, @( [% @+ B* UFROM LAI JIANG, Department of Chemistry, University of Pennsylvania- a: U; L4 M" H& i
2 A9 N; u2 H! S2 O+ L! H' D1 z
It is a shame to see Nature — which nearly all scientists, including myself
2 h; _% P. Z* A8 Z7 r0 m4 u, regard as one of the most prestigious and influential physical-science
U% ]4 H9 D, S4 ~3 ^magazines — publish a thinly veiled biased article like this. Granted, this* ^3 e1 Q6 X! _/ q+ k$ T5 Q) _
is not a peer-reviewed scientific article and did not go through the# l9 u* C. [ |
scrutiny of picking referees. But to serve as a channel for the general! a4 v2 v7 E6 @5 b4 a0 o9 p$ r
populace to be in touch with and appreciate science, the authors and editors
; ], V+ J- a. r: R1 |6 Hshould at least present the readers with facts within the proper context,; u1 M! ~) O! m" h n) c1 A$ o3 a9 j) _
which they blatantly failed to do.1 l0 I9 v7 P7 Y& y7 z" |* w
/ Y& Y, _! a8 rFirst, to identify Ye’s performance increase, Ewen Callaway compared her9 Q9 V/ U+ I1 v; m: l
Olympic 400-metre IM time with her performance at the World Championships in% ~; \4 p% N+ s( e( c
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “3 W. T( I6 @, l- ]2 s8 @ n) I8 L
anomalous” improvement of around 7 seconds (6.72 s). In fact, her previous
/ G5 X5 u, ], |personal best was 4:33.79 at the Asian Games in 2010. This leads to an9 T$ b9 @: O: n* u6 y
improvement of 5.38 seconds. In a sporting event in which 0.1 s can be the9 u2 Q0 g) X" O+ Z6 `7 W- m' b
difference between the gold and silver medal, I see no reason for 5.38 s to
6 X( k: O$ i" i4 A. }+ t( L8 N( hbe treated as 7 s.
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Second, as previously pointed out, Ye is only 16 years old and her body is
3 m. T% Q# M- u. w2 v" j3 S8 p. e+ Xstill developing. Bettering oneself by 5 seconds over two years may seem X9 b; r, h: O J' {, @7 W" A
impossible for an adult swimmer, but it certainly happens among youngsters." n3 Z ]" ]2 j: Q
An interview with Australian gold medallist Ian Thorpe revealed that his 400
6 c! _1 y0 K0 n$ f% |-metre freestyle time improved by 5 seconds between the ages of 15 and 16.7 |; V# d5 N$ R
For regular people, including Callaway, it may be hard to imagine what an
. S1 ^. M$ }: {% m( I& ^elite swimmer can achieve as he or she matures and undergoes scientific and
# g/ |1 A& z) K: I1 opersistent training. But jumping to the conclusion that it is “anomalous”
8 x" H2 {" }; P( S/ Abased on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.7 D0 ?$ y( A" F7 [$ H
0 Q# W/ w: Y1 Q. n
Third, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook
( T* w( [/ S1 D! p' ~; dexample of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in' J1 g% y! v* M- U6 t
the last 50 metres, but Lochte had a huge lead in the first 300 metres, so! k. z3 f( M( g8 g3 m7 W
he chose not to push himself too hard and to conserve his energy for later6 y* Q! L" _; Q2 d Y( Q" F
events (whether this conforms to the Olympic spirit and the ‘use one’s! a7 Z$ A$ x+ K1 e
best efforts to win a match’ requirement that the Badminton World: b1 u" w! t, L8 O1 v8 j( E) ]7 Z4 g
Federation recently invoked to disqualify four badminton pairs is another
^+ c$ c2 o1 |topic worth discussing, though probably not in Nature). Ye, on the other9 ?6 D4 ]* Y8 X* i) c5 {# I p- y
hand, was trailing behind after the first 300 metres and relied on freestyle
g8 j% _) r- ]0 H, @6 |, in which she has an edge, to win the race. Failing to mention this
+ M- i; R. |) F. \4 u% ^ p( v: ostrategic difference, as well as the fact that Lochte is 23.25 seconds
, F9 D6 W: l! O5 `# l0 f2 F6 `faster (4:05.18) than Ye overall, creates the illusion that a woman swam
: N }# a( U4 f7 T/ p, zfaster than the best man in the same sport, which sounds impossible. Putting
0 J" p0 I( o, r; x$ B; ]' B/ n" Saside the gender argument, I believe this is still a leading question that/ q k! K: x) a( M0 e' e0 [" m1 T) S
implies to the reader that there is something fishy going on.
9 e5 e h( A& q' a* D
2 O% r1 j/ Q; p1 Y4 h+ V5 y; f5 [Fourth is another example of cherry-picking. In the same event, there are
$ n& f. T p/ Q* G' x* @* Xfour male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.932 Q1 x1 [8 a/ ]1 T
s) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s9 S) u9 B" k0 j5 ?
), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns
/ p+ x' Z) ^! k- j( Dout, if we are just talking about the last 50 metres in a 400-metre IM,: \5 G- w2 g9 x) }3 ~
Lochter is not the example I would have used if I were the author. What kind6 {6 |5 Z) e( L' j5 c, f) z) }6 O7 V
of scientific rigorousness is Callaway trying to demonstrate here? Is it5 h7 ?7 N5 F3 \$ o' l
logical that if Lochter is the champion, we should assume that he leads in
# R# L* I, j4 j8 J6 p7 ~. {every split? That would be a terrible way to teach the public how science
1 ~# z8 G. I( bworks.* ?- w- U7 A( n' W* ]4 v& \5 q
: c- \% E9 P8 f0 g3 W( n0 HFifth is the issue I oppose the most. Callaway quotes Ross Tucker and
6 ~* t# K5 B* d2 Fimplies that a drug test cannot rule out the possibility of doping. Is this: | H1 \ U* j F3 b, M6 k1 G
kind of agnosticism what Nature really wants to teach its readers? By that
$ R, l$ i w) I7 W9 L9 `standard, I estimate that at least half of the peer-reviewed scientific8 t. Q# m' D8 @% Y) |" o
papers in Nature should be retracted. How can one convince the editors and% i- M R6 R+ Y7 L4 \. I
reviewers that their proposed theory works for every possible case? One
: N6 s w8 a3 H& c- N8 M" Y" Pcannot. One chooses to apply the theory to typical examples and to
8 u" t D4 c+ x3 D7 A9 p% pdemonstrate that in (hopefully) all scenarios considered, the theory works! i! ]# h: G' `- m! G# s
to a degree, and that that should warrant publication until a counterexample
: r) P% F/ l, I% His found. I could imagine that Callaway has a sceptical mind, which is! ]+ f$ b/ \' f2 l2 W
crucial to scientific thinking, but that would be put to better use if he- l' @0 e- H ^' N B7 l" u
wrote a peer-reviewed paper that discussed the odds of Ye doping on a highly/ v# Y( ~; u: B
advanced, non-detectable drug that the Chinese have come up with in the3 a0 J; u8 c7 o
past 4 years (they obviously did not have it in Beijing, otherwise why not! t8 A% I" H$ q/ M2 P; K
use it and woo the audience at home?), based on data and rational derivation
, a) Z% S! r* A. This article, however, can be interpreted as saying that all athletes are; Y/ J5 k- Q# r
doping and the authorities are just not good enough to catch them. That may3 \8 { a+ m7 m5 f: e" T) x
be true, logically, but definitely will not make the case if there is ever a
4 h3 Q+ t: w7 Hhearing by the governing body for water sports, FINA, to determine if Ye& Y5 h' D5 M7 z8 k1 ^
has doped. To ask whether it is possible to obtain a false negative in a
- B0 }" r6 [" c: e8 o9 e/ f7 Ddrug test looks like a rigged question to me. Of course it is possible:
7 O' O7 d( V7 u: I9 V' r' Oother than the athlete taking a drug that the test is not designed to detect8 s' b/ x, h" y7 C. J9 P7 e; K' o; B
, anyone who has taken quantum 101 will tell you that everything is
7 Y. d9 p9 o: Q* x7 P& aprobabilistic in nature, and so there is a probability that the drug in an( i1 d* B( e5 s* C
athlete’s system could tunnel out right at the moment of the test. A slight( _ D& C8 @$ F0 a6 t( r
chance it may be, but should we disregard all test results because of it?
+ B( ]& h9 d; i8 v. ?% A5 h1 bLet’s be practical and reasonable, and accept that the World Anti-Doping
. f, r% s. K6 \) q% Wagency (WADA) is competent at its job. Ye’s urine sample will be stored for
- t7 Y1 n. M! v$ Neight years after the contest for future testing as technology advances. L; ^ x5 T `4 @* e Z. E8 @& \( o2 S
Innocent until proven guilty, shouldn’t it be?6 _1 J: {% S1 X4 u
# L. f, f" M: @Sixth, and the last point I would like to make, is that the out-of-
2 g/ Y9 p: ?7 s2 _8 c! d7 s& @4 B- [competition drug test is already in effect, which Callaway failed to mention1 |" v1 I; k* z( \- P* m( f* K
. As noted in the president of WADA’s press release, drug testing for
; S3 T g U! I6 }: }Olympians began at least six months before the opening of the London4 r# l3 @" g0 K; a
Olympics. Furthermore, 107 athletes have been banned from this Olympics for
5 p/ ^1 \- @% @doping. That may be the reason that “everyone will pass at the Olympic9 ]2 z5 ~3 _6 u0 `6 Q
games. Hardly anyone fails in competition testing” — those who did dope
% \& j6 v3 ~" p, v- N9 Fhave already been caught and sanctioned. Callaway is free to suggest that a
6 e) {% H/ M* N6 M% H& kplayer could have doped beforehand and fooled the test at the game, but this
5 z- o, G+ }3 _( I* J, D. [possibility is certainly ruled out for Ye.
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Over all, even though Callaway did not falsify any data, he did (( L* L# ?2 H, U4 w6 C0 }2 `; S
intentionally or not) cherry-pick data that, in my view, are far too: Q9 v, H! G4 b6 w$ M1 Z- a
suggestive to be fair and unbiased. If you want to cover a story of a K, h: Q7 {, f# i" O
suspected doping from a scientific point of view, be impartial and provide4 t& O! F/ z3 f# w
all the facts for the reader to judge. You are entitled to your; o: l0 h2 O/ V- q ^
interpretation of the facts, and the expression thereof in your piece,8 R+ h5 p/ ?+ G: c3 L9 }" t" d' X
explicitly or otherwise, but showing only evidence that favours your) ?- O. B, k# w+ T& P
argument is hardly good science or journalism. Such an article in a journal9 b: k6 i7 O& w7 h
such as Nature is not an appropriate example of how scientific research or7 {, R7 j2 |: ]3 i$ t- [
reporting should be done. |
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