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Talk:Flaws in Richard Lenski Study (view source)
Revision as of 19:01, July 13, 2008
, 19:01, July 13, 2008→Richard Lenski incorrectly included generations of the E. coli already known to contain Cit+ variants in his experiments.[3] Once these generations are removed from the analysis, the data disprove Len: new section
==Marginally significant==
==Marginally significant==
In #1, that's not inconsistent. The figure makes it clear that, according to the hypothesis, the mutations should also occur earlier than 31,000, but should become more common at that point. 12/17 mutants occurred after 31,000. The point in #3 is not clear. What do you mean by ''weighting''? In #5, ''Lenski's paper is not clear in explaining how the results of his largest experiment...his paper refers to his largest experiment as "marginally ... significant," which serves to obscure its statistical insignificance.'' Actually, '''marginally significant''' is clear. It means that the p-value is between .05 and .10 (in this case it's .08, table 2). It's a pretty standard phrase to describe an effect that falls into that range. [[User:Murray|Murray]] 13:41, 13 July 2008 (EDT)
In #1, that's not inconsistent. The figure makes it clear that, according to the hypothesis, the mutations should also occur earlier than 31,000, but should become more common at that point. 12/17 mutants occurred after 31,000. The point in #3 is not clear. What do you mean by ''weighting''? In #5, ''Lenski's paper is not clear in explaining how the results of his largest experiment...his paper refers to his largest experiment as "marginally ... significant," which serves to obscure its statistical insignificance.'' Actually, '''marginally significant''' is clear. It means that the p-value is between .05 and .10 (in this case it's .08, table 2). It's a pretty standard phrase to describe an effect that falls into that range. [[User:Murray|Murray]] 13:41, 13 July 2008 (EDT)
== Richard Lenski incorrectly included generations of the E. coli already known to contain Cit+ variants in his experiments.[3] Once these generations are removed from the analysis, the data disprove Len ==
The author of the above statement must not have read the paper or the supplement carefully. Lenski took clones from those cultures that '''weren't Cit+'''. Careful reading of the paper or the supplement reveals that Cit+ mutants appeared at 750 generations or later into the replay experiment. The authors write: "New Cit+ variants emerged between 750 and 3,700 generations..."