I often think of Marr's "three levels of analysis" from cognitive neuroscience when thinking about technical communication and different audiences. there's the

I often think of Marr's "three levels of analysis" from cognitive neuroscience when thinking about technical communication and different audiences. there's the "computational level" (poorly-named, focused on high-level objectives of the system), algorithmic level, and implementational level. works for understanding any information processing system, not just brains/minds as he originally planned