Comment by samsquire

If you have a large body of existing code and you want to change its behaviour, you have to work out where to add your change, without breaking what already is there.

My thoughts in this is to somehow create a system where additional rules or changes to behaviour have marginal cost.

I am interested in the Rete algorithm, a rule engine algorithm. But we could run this sort of thing at compile time to wire up system architecture.

Boilerplate or configuration is an enormous part of programming and I feel there really could be more tools to transform software architecture.