The Boundary is requisite to conflict — spatial boundaries are evident in every finite conflict.
A Boundary is, in political geography, an imaginary line between two nations, separating the imaginary rights of one from the imaginary rights of the other.
A Boundary is a divider, real or imagined, designed to enforce civility. See "failure".
Destination is greatly overvalued as a thing that needs planning. It is only because humanity has never known where it was going that it has been able to find its way.
Environment is a term only recently discovered, which is strange given Man's antiquity.
14 concepts in this pillow book.