Bill,

A nice line:
We have to understand this enemy in order to defeat him.
That maybe the US Army way, it certainly is not the UK police approach and I suspect other police forces rarely 'understand' their enemy.

Police officers deal with what I'll call DCI Detail: information, intelligence and above all evidence. Sometimes they gain Context: the why and the setting e.g. youth unemployment rates impact on property crime. Rarely we gain Insight, partly as so little studying is done (in the UK); it comes from informants, the rare defector, analysis and networking.

This police methodology may explain the diverging viewpoints in the (London) Metropolitan Police's Special Branch (intelligence) and Anti-Terrorist Branch (evidence) which lasted years and more recently the differences between NYPD offices.

How do the model(s) you know Bill differ?