It is a common cognitive approach to argue that things are unknowable, especially if evidence is currently pointing to a truth we wish were not so. Certainly i

It is a common cognitive approach to argue that things are unknowable, especially if evidence is currently pointing to a truth we wish were not so. Certainly it is very, very hard to get quality evidence in some domains, and software engineering is one of the hard ones. That does not mean it is impossible, and we should never dismiss things out of hand. We should have specific critiques for claims we think are wrong, and explain why.