purpose of control
regulation of results through alteration of activities, allocation of organizational assets
three types of control processes
cybernetic, go/no-go, post control
cybernetic
constantly monitored system, negative feedback loop
go/no-go
testing to see if present condition met, most common, cannot be based on calendar
purpose of formal change control system
review all changes, identify all task impacts, translate impacts into scope/cost/schedule, evaluate benefits/costs, id alternative changes, accept or reject, communicate, ensure implementation, report