It is poorly managed. Enough said about this. It is a people problem by definition.
It was unachievable to begin with. This is really a subset of over constraint—severe over constraint. Nearly anything is achievable given the right resources. Yes, there may be some that are truly a waste of time, bringing back the dead falls into this category. Or, does it? Wouldn’t cloning the person be a form of this? Isn’t that, in reality, only a constraint? The cases that are technically infeasible, are management issues. The proper due diligence, done at the onset, will prevent them from happening.
When I posted this blog originally, I used a tweet saying failure was due to people not process. There was an immediate response that Deming and Juran would disagree. They were all about systems, not really process. Process, proper process, made the system more predictable. They followed the 85/15 rule regarding people. This rule is, 85% of a worker's effectiveness is determined by the system he works within, only 15% by his own skill. However, implementing an improper process is a human problem, not a process problem.
Experience says stick with people as the problem. If we focus on people and not totally on process, our projects would be better off.
The human factor is sorely missing from project management. People seem to think that process will fix it all. Process will do nothing until we can get the people to develop good processes and then get everyone to apply that process correctly and follow it.
Simply applying a process solves nothing. A process to define all requirements prior to building a product might be great for pulling
network wire, building a house or upgrading a CRM system. Building the next generation got-to-have whiz-bang electronics device, however, cannot be generated under those rules. Some form of iterative development process is much better. Who makes those decisions to apply the wrong methodology? People.