Popper (1959) gave one of the most famous accounts of science. He was a falsificationist. Lakatos (1970) described three brands of falsificationism: dogmatic, naive and sophisticated. Dogmatic falsificationism says that all theories are conjectural and science cannot prove; it can disprove. Proponents demand that once a theory is disproved, it must be unconditionally rejected. This means that science grows by the repeated overthrow of theories by hard facts (Lakatos, 1970). Naive falsificationism is similar to dogmatic falsificationism except that some methodological decisions7 need to be taken in naive falsificationism. Lakatos (1970) mentions two characteristics common to both dogmatic and naive falsificationism: (a) a test is – or must be made – a two-cornered fight between theory and experiment and (b) the only interesting outcome of this confrontation is refutation of the theory. PAT researchers do not subscribe to this methodological dictate of falsificationism