Among the factors that might influence the choice of a software development process model, let us focus on two:
r: the degree to which the stakeholders and team members understand the stakeholders' requirements in the early days of the project.
a: the level of agreement that the team shares on the likely architecture of the system.
consider the 4 extreme combinations of high/low values of r and a.
the team has past experience working under the waterfall model. for each of these four cases, should they stay with that model or consider moving to some other model?
low r, low a
high r, high a
low r, high a
high r, low a