Why does Andrew Huberman think it's false that we have a different brain or rather are a different person every day?

Andrew Huberman challenges the notion that we fundamentally have a different brain or are a different person every day by addressing a common misconception about neuroplasticity. He explains that while many people believe every experience changes the brain, this is not entirely accurate. Significant changes in the nervous system occur mainly when specific chemicals are released that allow neurons to form stronger or weaker connections. This process does not happen with every experience but requires particular conditions, usually involving focused attention or certain emotional states, especially in adulthood 1.

Huberman emphasizes that while we indeed have the capacity for plasticity throughout our lives, substantial changes are not constant or automatic simply due to the passage of days or exposure to new experiences. It requires active engagement and specific biological mechanisms to instigate those changes 2.