fascinating!! its a whole series but I've gotten just one i…

fascinating!! its a whole series but I've gotten just one in. This was a query I had about his use of the term 'juvenile'.
Key points about his use of the term 'juvenile'
Brain Development:
Humans evolved with an extended juvenile phase, meaning their brains stayed in a more flexible, adaptable state for longer.
This allowed for greater intelligence, creativity, and social cooperation.
Hormonal Influence:
Certain plant chemicals (flavonoids) influenced human hormone regulation, suppressing testosterone and estrogen to keep humans in a more juvenile, less aggressive state for longer.
This extended phase contributed to higher intelligence, empathy, and social bonding.
Reversal of This Process:
Over time, as humans moved away from their original diet and environment, they started maturing more rapidly, losing these juvenile traits.
The speaker believes this has led to a decline in intelligence, emotional depth, and creativity, making humans behave more like other mammals, driven by survival instincts and dominance.
Link to Neurological Conditions & Society:
The shift away from this juvenile state may explain modern neurological conditions and social changes.
More dominance-based, hierarchical, and fear-driven societies may be a result of this "maturation" process gone wrong.

So, when he says "juvenile," he doesn’t just mean young in age -- he's referring to a unique state of brain plasticity and social behavior that he believes humans evolved to maintain for longer than other animals. But important to his work - he believes humans are reverting to the mammalian ways again.
https://youtu.be/WpAiXJ0VYKQ?si=EByiqzXOo4A6QSu5