Uniformity is not a sine qua non, and this is where Pepin-Robarts in reminding us of the opting in and opting out facilities and raising the compensation in opting out provided the opportunity if there is a spirit of goodwill and of pragmatic compromise for working out arrangements to accommodate the increasing pluralism in our federal society.
uniformity is a sine qua non.
( z1 uniformity :domain ( z2 sine-qua-non ) )