In reality the peasantry gained much more than the lord. Just because money rents displaced the ploughings and reapings very gradually, they assumed the most important characteristic of these latter--their customary uniformity; tradition kept them at a certain level which it was very difficult to disturb, even when the interests of the lord and the conditions of the time had altered a great deal. Prices fluctuate and rise gradually, the buying strength of money gets lowered little by little, but customary rents remain much the same as they were before. Thus in process of time the balance gets altered for the benefit of the rent payer. I do not mean to say that such views and such facts were in full operation from the very beginning: one of the chief reasons for holding the Glastonbury inquest of 1189 was the wish to ascertain whether the rents actually corresponded to the value of the plots, and to make the necessary modifications. But such fresh assessments were very rare, it was difficult to carry them into practice, and the general tendency was distinctly towards a stability of customary rents. [Social results of commutation.] The whole process has a social and not merely an economical meaning. Commutation, even when it was restricted to agricultural services, certainly tended to weaken the hold of the lord on his men. Personal interference was excluded by it, the manorial relation resolved itself into a practice of paying certain dues once or several times a year; the peasant ceased to be a tool in the husbandry arrangements of his master. The change made itself especially felt when the commutation took place in regard to entire villages[371]: the new arrangement developed into the custom of a locality, and gathered strength by the number of individuals concerned in it, and the cohesion of the group. In order not to lose all power in such a township, the lords usually reserved some cases for special interference and stipulated that some services should still be rendered in kind[372].