Catholics Are Wrong, Says Who? examines common objections to Catholic teaching by focusing on a foundational question in Christianity: authority. Rather than debating individual passages of Scripture in isolation, the book proposes a consistent method for evaluating theological claims by tracing them back to the earliest sources of Christian belief.

Beginning with the Nicene Creed, the early Church councils, and the formation of the biblical canon, the work guides readers through a clear framework for assessing how doctrine was historically preserved and transmitted. It addresses the relationship between Scripture and tradition, the concept of apostolic succession, and the role of visible unity within the Church. Throughout, the emphasis remains on historical continuity and basic reasoning rather than technical theological terminology.

Written for general readers and discussion groups, the book aims to encourage thoughtful, charitable dialogue among Christians with differing interpretations. Moving the conversation away from isolated proof texts and toward shared historical foundations offers readers a structured way to approach questions about Christian teaching and interpretation.