When I was preparing my "Top-10" list of research papers for 2015 for CoinDesk, I read an interesting paper co-authored by @Andrew Miller . The paper identified three components of Bitcoin’s design that can be decoupled and analyzed individually: (1) transactions and scripts, (2) the peer-to-peer communication network, and (3) consensus and mining. This made me think that perhaps we can extend this categorization beyond just these three technical topics to includeof Bitcoin knowledge. I propose the two new categories: (4) money, and (5) the impact of cryptocurrency on society.I noticed that if I write them in this order, then they form a linear domain progressing from what I'll call "left-brain intensive" thought to "right-brain" intensive thought. These categories also cover a wide range of disciplines, as shown below:Obviously I've taken some liberties with this diagram, and there is overlap in many places, but I think it reveals some truth as well.It might also help us understand our irresolvable debate with the Blockstream Core folks. For example, if you wander on over to one of their clubhouses , you'll see that they're usually talking about Topics #1 and #2. Over at our forum, we're normally talking about Topics #3 and #4. In other words, our expertise and knowledge of Bitcoin covers quite different areas.Anyways, food for thought...