Normal brain development is influenced by both puberty and chronological age, which usually act in tandem during adolescence.

"On top of all of that, during his adolescence, he had alopecia and I think the way that Dave approached his life was indicative of his childhood really," says Si.

His expression holds the happy verve of a young man caught somewhere between boyhood and adolescence.

Gen Z is the first generation to experience a childhood and adolescence fully integrated online.

In November 1994, Times’ Howard Rosenberg presented a number of theories about the show’s “ratings abyss,” including the possibility that it created such a “painful mirror image of adolescence,” it was uncomfortable to watch.