Template:Ideology
What we think we understand in our mind is limited by what we are willing to see. What is often born of our prejudice is called Ideology or the "science of ideas". Ideology is "a system of ideas and ideals, especially one that forms the basis of economic or political theory and policy."
A "system of ideas" is often constructed in our own minds with influences of others and bound together with our own ego. Our personal dedication to an ideology may be a form of allegiance which keeps us from seeing anything that is contradictory of what we have come to believe. In the realm of such ideas facts may no longer matter.