The actual research says something far less clickworthy. Are Stanford's PR dribbles now created by LLMs ?
"Two parallel neural ectoderm progenitors contribute to the developing brain
Abstract When and how different brain regions diversify from one another remains unresolved.
Does a common neural ectoderm progenitor generate the entire brain? Or do multiple neural ectoderm progenitors exist, each restricted to form specific brain regions?
Here our lineage tracing studies of mouse embryos support the latter model. Two parallel brain progenitors emerge simultaneously during gastrulation: anterior neural ectoderm (forebrain/midbrain progenitor) and posterior neural ectoderm (hindbrain progenitor). Differentiation of human pluripotent stem cells into anterior or posterior neural ectoderm-like cells revealed these were lineage committed to forebrain/midbrain versus hindbrain fates, respectively. They harbored diverging chromatin landscapes foreshadowing future forebrain/midbrain versus hindbrain identities. We further differentiated human pluripotent stem cells into hindbrain rhombomere 5/6-specific motor neurons, which were hitherto difficult to generate in vitro.
Hence, we postulate the brain is a composite organ emanating from two lineage-restricted progenitors; these dual progenitors may be evolutionarily conserved across 550 million years from hemichordates to mammals."
I think it's very interesting news. We've known about the brain's separate parts, and separate functions for a while. It was always assumed our evolution of the brain was neatly, and tidily tucked away as somethat that branches off a singular thing. A single step from the pluripotent, 'infinitely renewable' stem cell into another single progenitor.
This suggested a sequence of events, causes and effects, that somehow our minds today can be evolved from a singular 'step' within growth. Only our brains seems have this requirement.
So this requirement, in and of itself, is interesting and newsworthy. For whatever purposes, it's 2 separate systems that many living organisms evolve in the same way. It's 2 steps, for some physical reason.