what are requirements?
	customer needs
	dependencies
	constraints
	future-proofing?

desirable qualities of requirements
	abstract - not a lot of details
	gives devs breathing room	
	
discovering requirements
	spend time w/ users
		observe them while they do their job
	prototyping

documenting requirements
	not providing too many reqs documents to anyone
	"use case"
		an example of using the software