Journal: In several psychological studies, subjects were given statements to read that caused them to form new beliefs  Later, the subjects were told that the original statements were false  The studies report, however, that most subjects persevered in their newly acquired beliefs, even after being told that the original statements were false
This strongly suggests that humans continue to hold onto acquired beliefs even in the absence of any credible evidence to support them
It is unrealistic to expect people to keep track of the original basis of their beliefs, and to revise a belief when its original basis is undercut.