> On Sunday 31 July 2022 at 22:15:26 UTC+1, I Envy JTEM wrote:
> "Isolation is the engine of evolution."
> Goggle it -- it seems to be yours and yours
> alone. It's truly remarkable that whenever
> anyone says anything non-trivial, the use
> of those words is, almost always, unique
Doing the customary 30-second Google search, the oldest I
found was 2005:
Of course Google SUCKS so it probably missed others...
> BUT Marc is NOT talking about isolation.
> He looks at the phylogenetic tree of the
> hominoid taxon, picks each branching
> point, claims to link it to some major
> geological event (or maybe even to
> some climate change) and declares that
> on the branching event, one population
> moved north and the other south, or
> maybe one went west and the other
> east. And, of course, applies it ONLY to
> the hominoid/hominid taxon.
Wolpoff invented Multi Regionalism and he was always like,
"If you want to argue Regional Continuity, fine." it was all six
of one, half dozen of the other to him...
I see pretty much all of this the same way.
Isolation requires mechanisms. Yes you can get the Founder
Effect where as little as a single individual, a pregnant
individual, washes ashore an island and, BAM, you have an
isolated population. It's probably far more often related to
catastrophic events, like major volcanic eruptions, and even
things like plate tectonics.
TEXT BOOK EXAMPLE: Cretaceous era dinosaurs of South
America. They look like Jurassic era dinosaurs. And they kind
of were. Cut off, evolving in isolation, safe from migrations
from Asia, they were Jurassic era dinosaurs allowed to remain
> This has NOTHING to do with sensible
> evolutionary theory.
It's a matter of degrees.
Everything fits together. Wolpoff's Multi Regionalism required
an engine, something that moved populations across the globe
then left them there, isolated. The glacial/interglacial cycle does
this, together with natural catastrophes. Ice grows, sea levels
drop and massive highways open up between the lands: The
beaches! The planet warms, the oceans rise and movement is
now difficult at best. Populations are effectively isolated.
This rising & falling would also be a natural pump of sorts, pushing
groups or whole populations inland where they would adapt to
their new environments...
Everything falls into place. It all makes sense. It all matches Aquatic