Shouldnt the liturgy reflect the times and the culture of people?
For centuries, a Catholic could attend Mass anywhere in the world and always find it the same. Were it possible to travel in time, the same would still hold true: a Mass offered by an Catholic priest living in Rome in 570 would be nearly the same as that offered by one offered in the same city in 1570. Moreover, that Mass offered in 1570 would be the same as one offered by a priest living in Nagasaki in 1940 or here at Our Lady of the Snow in 2009. This fact reflects clearly two of the four marks of the Catholic Church its unity and catholicity, both in regard to location and time. You may remember learning in your catechism as a child that the four marks of the Church are those clear signs by which all men can recognize the one true Church established by Christ. Only the Catholic Church possesses all four of these marks: it alone is one, holy, catholic (universal), and apostolic. It is one because all of its members profess the same faith, the same Sacrifice and Sacraments, and are un