Self-validating belief systems

Just a quick note: This paper on self validating belief systems is very interesting. More reading needed, but a quick thought that occurred to me while I am part way through it; The human mind's ability to believe things that are not true, and hang onto those beliefs, may be evolved into our way of organising our thoughts and memories to process things that are useful to us to remember and act on. We attach an importance to continuing to remember that a belief is true, otherwise we would be too forgetful, so we have to hang on until other evidence is provided. This is short-circuited by a mistake in the processing, where the importance of keeping the previous concept labeled as "valid" or "true" is mis-prioritised over the need to correct erroneous thoughts.