This is one of those things that seems cute until you start to put it to use, then you realize just how incredibly robust a tool this is for looking at hero character arcs.⠀
Schecter's paradigm: ACT I (The hero is ORPHAN or outsider). ACT IIa (the hero WANDERS looking for answers). ACT IIb (hero becomes WARRIOR for a cause) ... ACT III (they risk MARTYRDOM).
Go watch some films with this in mind, and reply here.