"In many human endeavors, we create infrastructure to support
our lives which we then rely upon for a long period of time. We
have always built shelter. Throughout most of recorded history,
building or buying a home was a major starting step to growing up.
This building would be maintained and used after that, often for
the remainder of the builder's life span and in many instances
beyond. Components would be replaced as they wore out, and the
design often took the wear and tear of normal living into account.
As needs changed, the house might be modified. In general, though,
you thought of a house as having changes measured in decades.
"Likewise, human societies also create infrastructure that are
built once, then used and trusted for a long period of time..."