The object in objective perception derives its form from a composite of perceptual gestalts. The formal gestalt, in turn, is an accumulation of experience localized in a symbol. Mythology supplies perception with a known context. The objectively perceived world is an echo of the symbol forming experiences of an actualization process that incorporates the participant into cultural mythology. Although there is an unknowable gulf between perception and the phenomenal, there is an obvious correlation between the two.
Common sense dictates there is a 'real' world and knowledge fits it like a glove.
Illusion undermines the apparent objectivity of knowledge as the mind adapts and solidifies the phenomenal stimulus into a known context. We unquestioningly accept reality as having volume, weight and placement in contiguous time and space. But all we really have is sensory data and we conclude the rest. Mythology provides synthetic understanding. Where science works outwardly from the facts with an analytic model and with what we mistakenly assume are universal ideals, mythology works inwardly from the objectively perceived world with subjective confirmation.