Software creation is a process in which humans constantly make decisions. Each decision has the potential to impact the scope. A lot of decisions have limited i

Software creation is a process in which humans constantly make decisions. Each decision has the potential to impact the scope. A lot of decisions have limited impact and may be estimated. Some decisions at the margin have the potential to significantly alter and blow up the scope. Not all critical decisions can be identified in time and there is a good chance of unforeseen consequences. Containing those is vital. For large scale software projects management and governance are often the determining factors for quality, cost and timeliness.