This seems to be a restatement of POSIWID https://en.m.wikipedia.org/wiki/The_purpose_of_a_system_is_what_it_does https://en.m.wikipedia.org/wiki/The_purpose_o

This seems to be a restatement of POSIWID https://en.m.wikipedia.org/wiki/The_purpose_of_a_system_is_what_it_does https://en.m.wikipedia.org/wiki/The_purpose_of_a_system_is_w...