Can you point me to a reputable source that definitively claims (or ever claimed) that the Big Bang happened beyond doubt? I don't think the problem is with an

Can you point me to a reputable source that definitively claims (or ever claimed) that the Big Bang happened beyond doubt? I don't think the problem is with any hubris in science. It is the general population that is the problem. Most people will completely disregard a statement which has any qualifiers or accept it as gospel truth (anything with "evidence suggests..." will either be taken as gospel or completely disregarded). Very few people have the ability to understand and appreciate the nuance in a scientifically correct statement.