Something can be incandescently obvious but still utterly unintelligible to us if we lack the conceptual grammar required to interpret it; and this, far from being a culpable deficiency, is usually only a matter of historical or personal circumstance. One age can see things that other ages cannot simply because it has the imaginative resources to understand what it is looking at; one person’s education or cultural formation may have enabled him or her to recognize meaning where others will find only random disorder.