Jory Cunningham over at Prototypr:
Design Technologists bring a constructive pessimism to the design process. Designers can often be overly optimistic, or golden-path oriented. Often times a show-stopping potential exception is not identified until it is being built in Engineering and the design must be sent back to the proverbial, and literal, drawing board. Design Technologists will make sure that exceptions and engineering impact will be considered throughout the design process and the resultant design will be all the better for it.
I undertstand the role, it’s handy to frame how user interface design process have evolve, but I hate the title.