Hennig's heuristic principles (Was: Positivism in evolutionary scienc)

Thomas Schlemmermeyer termites at USP.BR
Wed Dec 10 16:06:13 CST 1997

> support that choice of approach. Practically speaking, does this mean tha=
> Hennig was suggesting use of his methods to provide a starting point for
> what, hypothesis formulation?

Yes, if I understood Hennig correctly. The human observer is able to
observe ontogenetic relations (development) and tokogenetic relations=20
This suggests that there are phylogenetic relations (macroevolution) as
But phylogenetic relations are formulated as hypotheses. They cannot be
directly observed.


Thomas Schlemmermeyer
Museu de Zoologia, Universidade de S=E3o Paulo
Caixa Postal 42694
CEP 04299-970
S=E3o Paulo, SP, Brasil

Thomas Schlemmermeyer
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