What do you think is a good measure of the size of a project? The number of people on the project team? The budget? The expected revenue from the unique product, service, or result? Other measures? And a related question... what would you consider a "small", "medium", or "large" project? I see on job postings things like "must be able to manage 4-6 small projects simultaneously", but there's often no definition of what they mean by "small".