About 20 years ago psychologist Alan Page Fiske and author of Structures of Social Life (Free Press 1993), now Professor of Anthropology at UCLA, wrote about the Four Elementary Forms of Sociality that describe our mental orientation of the form of exchange that we think we should use in each interaction with someone else.
Make sure you have flexibility written in, says Jonathan Blattmachr, author of the 953-page treatise, Blattmachr on Income Taxation of Estates and Trusts.