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其实比饶毅更牛的回复是 Upenn 的 LAI JIANG' A- c2 R, [+ H/ ]$ f0 \4 E
如果是中国长大的,英语能到这种程度真是很不简单。" _* e- f. x- j5 d' {
/ ]+ o3 Q) c! w& G* E; T% S1 ]! Khttp://www.sas.upenn.edu/rappegroup/htdocs/People/LJ.html$ F; S8 s6 ~2 |( i7 s) j7 B
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FROM LAI JIANG, Department of Chemistry, University of Pennsylvania" z2 S7 @3 G8 s. _
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It is a shame to see Nature — which nearly all scientists, including myself
7 n- \' o; ^- j+ G" ^- v/ x, regard as one of the most prestigious and influential physical-science
1 _1 w& o- w6 B1 u9 w, Omagazines — publish a thinly veiled biased article like this. Granted, this
) ?1 g2 ~' h- ~8 x- Bis not a peer-reviewed scientific article and did not go through the
' o/ n! l4 I8 ~+ Zscrutiny of picking referees. But to serve as a channel for the general/ W; v8 a1 r) o' J! T
populace to be in touch with and appreciate science, the authors and editors. X3 U `8 ^# r3 p& j
should at least present the readers with facts within the proper context,& U* [( c! B" v7 S# w" L8 B4 H- b6 O
which they blatantly failed to do.' L) W t9 \9 z
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First, to identify Ye’s performance increase, Ewen Callaway compared her
4 i9 b% i+ a: y m4 {Olympic 400-metre IM time with her performance at the World Championships in R* ]3 W( [) R; U' d& n( p3 P
2011 (4:28.43 and 4:35.15, respectively) and concluded that she had an “) e' g& D- P/ L, x- G+ j- E
anomalous” improvement of around 7 seconds (6.72 s). In fact, her previous
1 ?6 F/ m7 J. W. s1 gpersonal best was 4:33.79 at the Asian Games in 2010. This leads to an
* u' {3 P6 r% \' `improvement of 5.38 seconds. In a sporting event in which 0.1 s can be the
" z9 p! @: k& h- P+ X7 ]7 vdifference between the gold and silver medal, I see no reason for 5.38 s to
3 V! W6 [. N6 m4 J3 w7 Rbe treated as 7 s.
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- E+ J$ \+ }# i' GSecond, as previously pointed out, Ye is only 16 years old and her body is8 V% T9 b$ y% O0 K
still developing. Bettering oneself by 5 seconds over two years may seem
" d: T3 t# a& {' R: vimpossible for an adult swimmer, but it certainly happens among youngsters.
1 r: P$ j7 P1 R$ ^An interview with Australian gold medallist Ian Thorpe revealed that his 400
1 F7 H5 E9 x" S/ e* g-metre freestyle time improved by 5 seconds between the ages of 15 and 16.3 ^: n, W6 I9 L3 W
For regular people, including Callaway, it may be hard to imagine what an
! }! Z* \4 R/ Relite swimmer can achieve as he or she matures and undergoes scientific and2 Q, ] m1 V( p e* f, G" q, o1 j, A4 s
persistent training. But jumping to the conclusion that it is “anomalous” _' h c3 o+ c0 C8 _3 R- d5 u
based on ‘Oh that’s so tough I cannot imagine it is real’ is hardly sound.8 @# e l4 j) r) X0 x/ y: B
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Third, to compare Ryan Lochte’s last 50 metres to Ye’s is a textbook2 M2 Q) _) L. d# \4 m! a
example of ‘cherry-picking’ your data. Yes, Lochte was slower than Ye in
8 p9 u, G: |0 o$ ?# X+ c) ?the last 50 metres, but Lochte had a huge lead in the first 300 metres, so+ g) }! b$ z, n1 s0 I, k
he chose not to push himself too hard and to conserve his energy for later
) p: u: A- h1 j7 e u4 m1 Tevents (whether this conforms to the Olympic spirit and the ‘use one’s
, X. K4 b- r1 C4 b$ S4 t. Vbest efforts to win a match’ requirement that the Badminton World; k$ Q) n# ~ d( P
Federation recently invoked to disqualify four badminton pairs is another
% ?2 ~ p3 K- ~7 |/ Wtopic worth discussing, though probably not in Nature). Ye, on the other& r- H3 r& Z- i& ^" ?. I; N
hand, was trailing behind after the first 300 metres and relied on freestyle/ @) L7 i+ E1 ]( o; H. y( X) M/ s
, in which she has an edge, to win the race. Failing to mention this; I9 W3 f) H/ ?* I, H7 f+ W& ~
strategic difference, as well as the fact that Lochte is 23.25 seconds( \( R2 d6 j" [9 g. X; r: @% B
faster (4:05.18) than Ye overall, creates the illusion that a woman swam' R P" k. ~; x+ c
faster than the best man in the same sport, which sounds impossible. Putting
% S9 Y Y; y6 `& |7 Jaside the gender argument, I believe this is still a leading question that
) F9 w) m! Y! P2 p6 b( I) Zimplies to the reader that there is something fishy going on.9 i8 A, P' ]$ b' f) }, G; z+ S
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Fourth is another example of cherry-picking. In the same event, there are! l$ W: z9 g# U9 ?% t
four male swimmers who swam faster than both Lochter (29.10 s) and Ye (28.938 ] E/ R! T2 R
s) in the final 50 metres: Kosuke Hagino (28.52 s), Michael Phelps (28.44 s! @9 U* ]1 i5 g) ~/ H- H- l( M m
), Yuya Horihata (27.87 s) and Thomas Fraser-Holmes (28.35 s). As it turns8 N. {, h1 ~. G9 F5 i, C
out, if we are just talking about the last 50 metres in a 400-metre IM,
* Y4 I5 G- f& _, h7 ILochter is not the example I would have used if I were the author. What kind
3 c I8 j3 O8 xof scientific rigorousness is Callaway trying to demonstrate here? Is it7 y+ U7 B0 l9 s# O" y
logical that if Lochter is the champion, we should assume that he leads in
% V3 d, k h7 h9 P" q- @1 c! u3 ^every split? That would be a terrible way to teach the public how science5 D. T4 P! |( r, [ m; ]
works.
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: U2 X$ }# c1 g5 ^* L* ZFifth is the issue I oppose the most. Callaway quotes Ross Tucker and" {8 n; v8 P( u1 {8 p8 S7 ]
implies that a drug test cannot rule out the possibility of doping. Is this
@/ b5 C& x8 z) \; fkind of agnosticism what Nature really wants to teach its readers? By that7 Y) _& ?5 l$ d8 A
standard, I estimate that at least half of the peer-reviewed scientific9 g% u# C$ X" X
papers in Nature should be retracted. How can one convince the editors and
1 \ O7 G6 v& G4 D( u2 j3 Y! Treviewers that their proposed theory works for every possible case? One
% b: q: Q7 B Z' d3 ]cannot. One chooses to apply the theory to typical examples and to: f7 o) G2 r. n9 y- w
demonstrate that in (hopefully) all scenarios considered, the theory works2 d( _( ?& h \+ o7 j1 M
to a degree, and that that should warrant publication until a counterexample
/ ^( t+ x# }5 j( X6 bis found. I could imagine that Callaway has a sceptical mind, which is
: m7 i# q; B& Z4 J; C# g& P$ r* xcrucial to scientific thinking, but that would be put to better use if he
w- O. k; _- `6 S1 t+ fwrote a peer-reviewed paper that discussed the odds of Ye doping on a highly3 w4 c$ ]8 b* O3 L8 _% e' k7 i
advanced, non-detectable drug that the Chinese have come up with in the( h4 R: b/ d! |0 j4 u
past 4 years (they obviously did not have it in Beijing, otherwise why not
+ F' ^) ?1 ?$ o# E3 Huse it and woo the audience at home?), based on data and rational derivation
* L/ \8 D% x( U# W0 v+ @. This article, however, can be interpreted as saying that all athletes are, E' _# T7 ]9 H. A/ w
doping and the authorities are just not good enough to catch them. That may) g) m$ @+ _5 X8 |0 j
be true, logically, but definitely will not make the case if there is ever a
/ [* a4 l8 y5 a( j x! Q i8 Thearing by the governing body for water sports, FINA, to determine if Ye
' a6 S2 ^3 V% ahas doped. To ask whether it is possible to obtain a false negative in a8 Y: m3 p! M) H0 L
drug test looks like a rigged question to me. Of course it is possible:
* S0 R* l" p& P% c/ y; x9 p) yother than the athlete taking a drug that the test is not designed to detect
8 i" N) O7 O: U; W- f! B+ u# y+ B, anyone who has taken quantum 101 will tell you that everything is
$ K. w, g! M& x x yprobabilistic in nature, and so there is a probability that the drug in an( v/ O. x9 w) I9 u. p M
athlete’s system could tunnel out right at the moment of the test. A slight
& d3 F. Y( @9 r# Q! R1 D- rchance it may be, but should we disregard all test results because of it?
" w/ T3 m h) |Let’s be practical and reasonable, and accept that the World Anti-Doping" @0 [6 U% o4 s; w/ b7 ~1 h6 M
agency (WADA) is competent at its job. Ye’s urine sample will be stored for# Y b g& y2 }! v1 r- p
eight years after the contest for future testing as technology advances.0 T H3 y" x" F X; k, q
Innocent until proven guilty, shouldn’t it be? E; J2 p* h' D
) p1 o- a+ F; \5 P1 H8 O `Sixth, and the last point I would like to make, is that the out-of-9 f+ C4 V9 x% I; {
competition drug test is already in effect, which Callaway failed to mention/ X0 L2 Z1 M- h% p E) \2 O
. As noted in the president of WADA’s press release, drug testing for
" U( p R9 i% z% {, b5 OOlympians began at least six months before the opening of the London2 c; i. a( b r/ l; n6 D
Olympics. Furthermore, 107 athletes have been banned from this Olympics for
- n t5 G; O$ z9 i8 ^! ~6 Y5 cdoping. That may be the reason that “everyone will pass at the Olympic
! m6 l) R% M- k. Z& Agames. Hardly anyone fails in competition testing” — those who did dope% {$ ~- t* D5 c" Z0 J/ t) M
have already been caught and sanctioned. Callaway is free to suggest that a' t/ N1 w# W: Q5 }1 T! z, e" Q
player could have doped beforehand and fooled the test at the game, but this) e, X! w. R' r- \6 v
possibility is certainly ruled out for Ye.
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& {1 @% {4 [2 LOver all, even though Callaway did not falsify any data, he did (
) a2 c- G0 E, ?: x4 W5 Jintentionally or not) cherry-pick data that, in my view, are far too0 Q1 ]" B* }, V7 k& Q; p
suggestive to be fair and unbiased. If you want to cover a story of a; O% |! g/ {2 ?1 \
suspected doping from a scientific point of view, be impartial and provide0 ~% X4 h" ^' z2 n4 w
all the facts for the reader to judge. You are entitled to your
# Y4 \* `; [* E5 q' @& qinterpretation of the facts, and the expression thereof in your piece,
8 F; o0 Y$ C! }* V2 l- [explicitly or otherwise, but showing only evidence that favours your
" Q/ l' B9 y0 N; }4 F. rargument is hardly good science or journalism. Such an article in a journal6 g7 s! m" P+ E f A, c0 p
such as Nature is not an appropriate example of how scientific research or0 B. t D; J% F9 B+ Q3 v$ Y0 U
reporting should be done. |
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