A system and method that are directed towards developing a computer user interface employing a Personal Support Infrastructure (PSI) stack. The PSI stack is arranged to represent various layers of a human being employing a holistic approach. In one embodiment, the PSI stack may enable organization, development, and solicitation of requirements for the development of a human-machine interface, such as for a mobile device, and the like. In one embodiment, the PSI stack is configured as a data structure that may be populated with elicitations oriented towards developing the set of human-machine interface requirements.