In most cases design is taught like a trade without the standards or labor protections of a trade.
The job carries the ethical responsibilities of a profession, but is practiced without qualifications.
Design might be taught in any of the following departments: Art, Engineering, Business, Graphic Design, New Media, and more!
The visual artifact is less and less up to the task of representing any system of which it is a part.
We lack the scaffolding upon which to ascend to higher levels of discourse, so everyone is just stepping on each other's heads.
It is a practice that demands rigorous consideration and criticism. Currently the forums for this are few and scattered and ad hoc.