Does the prediction that persisting institutions are functional, imply they are stable?

The premise that persisting institutions have a function does not imply that institutions and their credibility are fixed in stone. When functions change, institutions change, and thus also the levels of credibility – a process evident in shifts in conflict.” See P. Ho, “An endogenous theory of property rights: opening the black box of institutions”, Journal of Peasant Studies, 2016, 43/6, p. 1134