Reciprocally

In the process of production, human beings work not only upon nature, but also upon one another. They produce only by working together in a specified manner and reciprocally exchanging their activities.

When younger brother calls [his elder brother's wife] his "co-wife" and reciprocally, when she calls him co-husband," rights in sexuality are being satirized.

Responding to this in confusion, perhaps you construct an Idea, a structure, a multiplicity, a system of multiple, nonlocalisable ideal connections which is then incarnated. It is incarnated in real (not ideal) relations and actual (physical) terms, each of which exists in relation to each other, reciprocally determining each other.