Bandler and Grinder say that their methodology can codify the structure inherent to the therapeutic "magic" as performed in therapy by Perls, Satir and Erickson, and indeed inherent to any complex human activity. From that codification, they say, the structure and its activity can be learned by others. Their 1975 book, The Structure of Magic I: A Book about Language and Therapy, is intended to be a codification of the therapeutic techniques of Perls and Satir.

Bandler and Grinder say that they used their own process of modeling to model