In Japan, Total Industrial Engineering is defined as eliminating Muda, Muri and Mura.
Without Reason (Muri), Inconsistent (Mura) and a Man Without a Horse (Muda).
There are used even in martial arts training
The terms are connected to Buddhist philosophy.
Muri is inadequate resources and Muda is waste of resources. When you do a thing without both of them you are doing moderation, the Buddhist philosophy.