Explore the problem situation
Produce an appropriate intervention strategy
appreciate the variety of systems approaches
choose appropriate systems methodologies
choose appropriate systems models and methods
structure, schedule and set objectives for the intervention
Intervene flexibly (revisiting the first two stages as necessary)
Check on progress
evaluate the improvements achieved
reflect on the systems approaches used
discuss and agree next steps
https://en.wikipedia.org/wiki/Systems_engineering
https://en.wikipedia.org/wiki/Systems_modeling_language