Circularity & testing.

James Lyons-Weiler weiler at ERS.UNR.EDU
Sat Oct 19 12:21:23 CDT 1996

The shift of the focus towards homology really misses the point of whether
reciprocal illumination is circular or not.  Hypotheses can't be used to
test hypotheses.  Even when the assessment of homology is good, the
tree that has the most among character agreement can be erroneous (this we
know from simulation and known phylogenies).

Cladistic parsimony alone cannot test anything, except for the hypothesis
that tree T is indeed the shortest tree for a given data set.  Who would
want to use an erroneous tree to test otherwise excellent hypotheses of

James Lyons-Weiler

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