This is your logic:
A is independent of B.
B could be anything.
_______
But...
B could be a Set such that A is a subset of B.
A and B could also be terms in a Set Z, which includes A & B
This is your logic:
A is independent of B.
B could be anything.
A is independent of B.
_______
But...
B could be a Set such that A is a subset of B.
A and B could also be terms in a Set Z, which includes A & B