Aiki (martial arts principle) and its practice is often kept within a particular individual or two from a family/school lineage. Culturally, and due to certain necessities of the time period, the aiki knowledge was usually a very well guarded secret and rarely disclosed. The oldest book to have historically discuss aiki was the 1899 Budo Hiketsu-Aiki no Jutsu. On the subject of aiki it was written: The Textbook of Jujutsu (Jujutsu Kyoju-sho Ryu no Maki) from 1913 wrote: Aiki (martial arts principle) Aiki from a Japanese budo term, at its most basic is a principle that allows a conditioned practitioner to negate or redirect
Muda (Japanese term) towards old behaviours without the process stopping. The word was brought across cultures as the "catchword" of Dio Brando, a central antagonist from the popular, long running manga series JoJo's Bizarre Adventure. The word would go on to be repeated rapidly as the stand cry of Dio and later his son, Giorno Giovanna. Muda (Japanese term) From an end-customer's point of view, value-added work is any activity that produces goods or provides a service for which a customer is willing to pay; "muda" is any constraint or impediment that causes waste to occur. There are two types of muda: One