[be4everfree]

I think they are trying to say that the origin of the human brain is NOT what they thought it was, but IS from a diffuse neural system in the animal's surface

[dano1]

"...from a diffuse neural system in the animal's surface..

so does that mean the worm was "write once read many"?

[dr_lew]

Not actually. The human brain is in the chordate line, and thus has a common ancestor with all vertebrates, that ancestor being something along the lines of the famous "sea acorn worm".

This is not changed by these announced findings.

They are saying the ancestor of the archetypical chordate was this neural net thing, and thus the chordate brain has no ancestral brain in common with insects and mollusks, e.g.