What does the saying, "overlooking the obvious" mean?

It basically means you gotta dig deeper to find better stuff than what's right there.

Explanation:

Self Sufficient State

Also known as the 'self-sufficient state,' or, in mathematics, and, psychology, identity.This means we are, all of us, overlooking the obvious, whenever we use mathematics to quantify, and language to qualify, reality.

1492

columbus changes the shape of the world

ferdinand and isabella unite and create catholic spain

jews and moslems driven out of spain

lorenzo de medici dies

no one buying art and supporting city like before, his brother had been assassinated slightly before

florence to rome renaissance shift

east to west transition of church administration to the vatican

eurasia because it is europe and asia