There is a strong suggestion that many of them are an extension of working places, friends, and territorial associations rather than fulfilling the original purpose, and occasionally one person joins more than one Mujin.
多くは実質的な目的よりも職場や友人、地縁的な付き合いの延長としての色彩が強く、中には一人で複数の無尽に入っている人もいる。