Recognizing levels of interaction is one step. But human relationships are not so one-dimensional. Guy I work with, person from Bible group, AA sponsor, girl I

Recognizing levels of interaction is one step. But human relationships are not so one-dimensional. Guy I work with, person from Bible group, AA sponsor, girl I snogged once, sister I send cards to once a year but avoid otherwise because we disagree strongly over politics, boss I trust implicitly but don't want to show my off-hour shenanigans to, et cetera, et cetera, et cetera. Any system which adequately models real relationships will be too complex for usability and any system which is simple enough to have decent usability will only approximate real relationships.