Project Four: Constrained Systems
full of mystery and difficult to understand of, relating to, or resembling an enigma.
contains mysterious elements that are difficult to understand.
to stop being visible : to pass out of sight
to stop existing : to die or go away completely
to become lost : to go to a place that is not known
to pass from view
to cease to be : pass out of existence or notice
to vanish out of sight; ceasing to be visible. quiet; to go unnoticed.