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... let's look at how evolution proceeds. There are
*only* changes within a species, since no parent ever gives birth to
something which is a new species. *Every* offspring looks largely
like its parents, even like its grandparents.
However, we can be
sure that we will never see an offspring of a different species than
its parents. The process of an emerging new species is slow and
gradual, and although we may be able to assert that the offspring in
the 1000th or 10,000th generation constitute a new species, we can
never pin down the exact location of that boundary, and in fact there
is *no* location for that boundary, since no parent ever gives birth
to a new taxon at any taxonomic level.
Hugh
--
Hugh Haskell