Online research in philosophy

Biography is an ancient literary genre. First of all—chronologically and logically it is a part of historiography. Whether we think of biography as more like history or more like fiction, what we want from it is a vivid sense of the person. The cover illustration of the fortieth anniversary edition of E. H. Carr’s What is History?1 is a close-up of an eye with fluffy white clouds against a blue iris and a dramatic black pupil in the center. Magritte called (...) this painting The False Mirror, an apt image for the untrustworthy nature of our perceptions of the world and, in its use here, for the uncertainties surrounding definitions of history in the past half century. Confusion has often accompanied .. (shrink)

When phylogenetic trees constructed from morphological and molecular evidence disagree (i.e. are incongruent) it has been suggested that the differences are spurious or that the molecular results should be preferred a priori. Comparing trees can increase confidence (congruence), or demonstrate that at least one tree is incorrect (incongruence). Statistical analyses of 181 molecular and 49 morphological trees shows that incongruence is greater between than within the morphological and molecular partitions, and this difference is significant for the molecular partition. Because the (...) level of incongruence between a pair of trees gives a minimum bound on how much error is present in the two trees, our results indicate that the level of error may be underestimated by congruence within partitions. Thus comparisons between morphological and molecular trees are particularly useful for detecting this incongruence (spurious or otherwise). Molecular trees have higher average congruence than morphological trees, but the difference is not significant, and both within- and between-partition incongruence is much lower than expected by chance alone. Our results suggest that both molecular and morphological trees are, in general, useful approximations of a common underlying phylogeny and thus, when molecules and morphology clash, molecular phylogenies should not be considered more reliable a priori. (shrink)