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Re: Parsimony



   Rudy help us, but I've got another parsimony/feather question.

   It was stated that the character state in a cladogram that requires the
fewest steps to evolve is the "correct" one, the most parsimonious.

   BUT, wouldn't evolving feathers in the theropoda require MORE
evolutionary steps than the assumption that feather-things are plesiomorphic
for the dinosauria?  Would not, then, the cladogram that assumes feathers is
plesiomorphic be the most parsimonious, since evolving feathers starting
within the dinosauria would require more steps than if primitive ones were
already present?

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