I think a fourth particularly important tribe is missing ... the Modeler. This a programmer that models systems (real or imagined) into working computer applic

I think a fourth particularly important tribe is missing ... the Modeler. This a programmer that models systems (real or imagined) into working computer applications. I suggest that in many cases, the other tribes largely exist to support the creation of these systems. This includes the systems that track and support your money, taxes, utilities, services, scheduling, reservations and insurances amongst others. The systems that enable you to purchase and consume things and have them delivered within the context of a whole supply chain. It also includes the modeling of control systems, from the software that runs an elevator, to an airport baggage handling system, to an automated warehouse. Typically in these, the challenge is in abstracting the problem domain under consideration - the determination of what to produce, rather than how to do so. Examples: Kristen Nygaard, Peter Coad Favorite Languages: Java, C++, C#, Smalltalk Hangouts: Currently suspended due to the focus on problems in the computer and data sciences, and computing infrastructure.