Did Vatican II Teach Heresy?

Ever since the publications of both Archbishop Carlo Maria Viganò and Auxillary Bishop Athanasius Schneider on whether or not the 2nd Vatican Council contains doctrinal errors, people have now been motivated to reconsider the question. Although I have written many articles that bear great relevance to this question (see links below), I’ve decided to write a brief summary of the conceptual seed of what has been going on since the emergence of the 20th century (although it precedes this, especially in the non-Catholic spheres of thinking) in the Catholic Church, is tried by the bishops of the 2nd Vatican Council, and is tested in the forthcoming decades. Continue reading