The management of projects. Typically, this is all about figuring out what's needed, working out how to satisfy that need, costing it out, doing the job and delivering the product/service or whatever.

Some say it's science, some say an art. Whatever. It keeps a lot of pencil-necks in jobs and forms the bedrock of capitalist growth through cost, time and quality controlled efforts.

If you want an example of good project management, take 5 to figure out how they built a pyramid in ancient Egypt.