If I were to recommend a starting point for the topic this site would be near the top of my list, and a stop at momentumbydesign reinforced that recommendation status, the small list of starting point recommendations I keep for friends asking about topics is short and this site is now firmly on it.
Reading this triggered a small reorganisation of my own thinking on the topic, and a stop at momentumbydesign furthered that reorganisation, content that affects the shape of my mental model rather than just decorating it with new facts is content with structural rather than informational impact and this site provides that.
