The stages were named after psychologist and developmental biologist Jean Piaget, who recorded and studied the intellectual development and abilities of infants, children, and teens.

It turns out that we humans go through a predictable series of developmental stages (Cook-Greuter ... we all start at 0 when it comes to the well-being stages. And we can't skip from 0 to 5 or 50.

Erikson, who died in 1994, theorized that personality is developed through eight different life stages, later called Erik Erikson’s stages of psychosocial development.

AI does not remember much outside the present few lines of conversation or the 25,000-word prompt limit of GPT4 (a marked improvement from the 8,000-word limit of GPT 3.5).