The urge to categorise

UR IIWhen we reflect on the number of people (more usually women1 ) who believe in Astrology, as well as those who believe in various other 'ologies' we can be reasonably confident that there's an underlying shared trait or need — the need to belong, and to categorise people.

Personality tests (e.g. DISC, or Myers-Briggs) are widely (if not almost universally) used to help decide who's suited to particular roles in businesses and organisations.

So when a friend started extolling the great relevance and benefit of understanding the Enneagram (a process of grouping people into one of nine types, or 'tribes'), I decided to look deeper into this particular habit.