this is always the problem with people! they are not mathematical formulas, they are not insects on a microscope, they defy simple scientific rational explanations.
thus any scientific study of human nature will be open to interpretation and subjectivity. so in that professors own subjective interpretation of the data children are born believers. its also been my own experience.
i think its impossible to have a truly unbiased and totally scientific opinion regarding the intracacies of human nature. it just doesn't work that way.