I'm not amused by the ignorance of so many Catholics who know next to nothing about Vatican II.  It was the largest assembled body of church hierarchy in its entire history [with about 2600 bishops attending the opening session].  It opened on October 11, 1962 on the eve of the Cuban Missile Crisis [October 14-18], which threatened the planet with nuclear annihilation.  That alone was a tense and sobering experience.

In analyzing the history of ecumenical councils and challenges of the TIMES that prevailed during and after it, there are definite shifts in the theology that endured.  Instead of the formulaic, dogmatic style of Scholasticism used at Trent, Vatican II adopted the modern language of Christian humanism and with it,  new semantics were used in order to frame and articulate Catholic faith.  For example, at Trent, the scholastics with their fixed idealized understanding of the nature of the universe and their airy 'deposit of Faith' theology carried the day.