My parents weren't like Captain von Trapp at the beginning of The Sound Of Music, cold and cut off from his kids, but there was a definite boundary between their world and mine, reinforced in my mind by that yearbook.
"The sound creates a space for itself with definite boundaries," he said.
Vein, in geology, ore body that is disseminated within definite boundaries in unwanted rock or minerals (gangue).
Living systems are objects with definite boundaries, continually exchanging some materials with their surroundings but without altering their general properties, at least over some period of time.
Compared with the "fixed" characteristics of the present period, the ancestral era is represented as having been one of flux, lacking definite boundaries.
A slime layer is loosely associated with the bacterium and can be easily washed off, whereas a capsule is attached tightly to the bacterium and has definite boundaries.
And certainly the concepts corresponding to such predicates as 'bald' or 'heap' do not posses definite boundaries, either.
Within these definite boundaries, some further comments can be made.
A fascist rule with iron fists is not being suggested, but definite boundaries must be put in place.
One can rightfully ask, if reality is quantum, how come we have what appears to be a classical world with definite objects, boundaries between objects, and the lack of quantum effects like entanglement and non-locality?
