Man ... if there were a text file with "all relevant business knowledge" in any job I've ever worked, it would have been revolutionary.
I'd say 25% of my work-hours are just going around to stakeholders and getting them to say what some of their unstated assumptions and requirements are.
I'd say 25% of my work-hours are just going around to stakeholders and getting them to say what some of their unstated assumptions and requirements are.