Design Within the Control Layer
Th ere are three responses to a piece of design-yes, no, and WOW! Wow is the one to aim for.
You’ve got to start with the customer experience and work backwards to the technology. —(Steve Jobs)
Don’t make me think. —(Steve Krug, 2005)
Th e control layer is the second lane of a two-way highway that connects the learner with the instructional system. Th is highway is the arterial over which the elements of an instructional conversation fl ow. Th e control layer and the message layer manage the substance of the instructional conversation, and the representation layer communicates this substance to all of the learner’s senses. Together, these three layers are responsible for what the literature commonly refers to as the “interface”. Only the representation layer is visible or audible to the learner. Th e message and control layers do their work behind the scenes.