Old World Blues (term)

Old World Blues is a post-War term for an extreme form of nostalgia.

Original meaning
The term is used to describe a form of depression and anxiety, manifesting as an unhealthy obsession with the Old World. The Blues causes the affected person to distance themselves from the world around them, withdraw from society, and become apathetic. Old World Blues can destroy valuable members of society, rendering them incapable of properly functioning in the present and planning for the future.

New meaning
After the Second Battle of Hoover Dam, the term has evolved. Paired with the expression "New World Hope", it slowly stopped being used to refer to a disorder of wistful yearning and began a new life as an expression describing the potential for the future. Old World Blues and New World Hope became inseparable parts.
 * "Old World Blues, New World Hope"

Alternatively, it could be paired with the expression "New World Misery", a withering form of nostalgia for times long past. Viewing Science as evil, technology unchecked as the source of all ills, all misfortunes. It was all this and more.
 * "Old World Blues, New World Misery"

Appearances
The expression "Old World Blues" appears in Fallout: New Vegas and the add-on Old World Blues.