Ninjutsu Kata are the seal of order. Yossi Sheriff on chaos and sacred patterns
Channel: AKBAN
Date: 2015-04-01

"Ninjutsu kata are a living Mudra, a seal, and must be carried to order the chaos that is Randori and Tatakai."
Yossi Sheriff, the AKBAN Academy founder in Ninjutsu Akademie Hamburg under Yakov Schacht Sensei. 
Sheriff explains the AKBAN Methodical Pyramid and emphasizes Kata and Randori, referring to the Kata as a living mudra. 
Teaching crucial points about Randori in Ninjutsu. 
Links
http://www.akban.org/pyramid_en/ - The Methodical Pyramid
http://www.akban.org/wiki/1st_AKBAN_Seminar_at_Ninjutsu_Akademie_Hamburg